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Self-Healable and Stretchable PAAc/XG/Bi_(2)Se_(0.3)Te_(2.7) Hybrid Hydrogel Thermoelectric Materials
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作者 Jinmeng Li Tian Xu +7 位作者 Zheng Ma Wang Li Yongxin Qian Yang Tao Yinchao Wei Qinghui Jiang Yubo Luo Junyou Yang 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2024年第2期180-186,共7页
Thermoelectric power generators have attracted increasing interest in recent years owing to their great potential in wearable electronics power supply.It is noted that thermoelectric power generators are easy to damag... Thermoelectric power generators have attracted increasing interest in recent years owing to their great potential in wearable electronics power supply.It is noted that thermoelectric power generators are easy to damage in the dynamic service process,resulting in the formation of microcracks and performance degradation.Herein,we prepare a new hybrid hydrogel thermoelectric material PAAc/XG/Bi_(2)Se_(0.3)Te_(2.7)by an in situ polymerization method,which shows a high stretchable and self-healable performance,as well as a good thermoelectric performance.For the sample with Bi_(2)Se_(0.3)Te_(2.7)content of 1.5 wt%(i.e.,PAAc/XG/Bi2Se0.3Te27(1.5 wt%)),which has a room temperature Seebeck coefficient of-0.45 mV K^(-1),and exhibits an open-circuit voltage of-17.91 mV and output power of 38.1 nW at a temperature difference of 40 K.After being completely cut off,the hybrid thermoelectric hydrogel automatically recovers its electrical characteristics within a response time of 2.0 s,and the healed hydrogel remains more than 99%of its initial power output.Such stretchable and self-healable hybrid hydrogel thermoelectric materials show promising potential for application in dynamic service conditions,such as wearable electronics. 展开更多
关键词 bismuth telluride self healing thermoelectric material
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Recent Progress of Two-Dimensional Thermoelectric Materials 被引量:12
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作者 Delong Li Youning Gong +6 位作者 Yuexing Chen Jiamei Lin Qasim Khan Yupeng Zhang Yu Li Han Zhang Heping Xie 《Nano-Micro Letters》 SCIE EI CAS CSCD 2020年第3期77-116,共40页
Thermoelectric generators have attracted a wide research interest owing to their ability to directly convert heat into electrical power.Moreover,the thermoelectric properties of traditional inorganic and organic mater... Thermoelectric generators have attracted a wide research interest owing to their ability to directly convert heat into electrical power.Moreover,the thermoelectric properties of traditional inorganic and organic materials have been significantly improved over the past few decades.Among these compounds,layered two-dimensional(2D)materials,such as graphene,black phosphorus,transition metal dichalcogenides,IVA–VIA compounds,and MXenes,have generated a large research attention as a group of potentially high-performance thermoelectric materials.Due to their unique electronic,mechanical,thermal,and optoelectronic properties,thermoelectric devices based on such materials can be applied in a variety of applications.Herein,a comprehensive review on the development of 2D materials for thermoelectric applications,as well as theoretical simulations and experimental preparation,is presented.In addition,nanodevice and new applications of 2D thermoelectric materials are also introduced.At last,current challenges are discussed and several prospects in this field are proposed. 展开更多
关键词 Two-dimensional thermoelectric materials Black phosphorus analogue Tin selenide Transition metal dichalcogenides Photothermoelectric effect
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Electronic structure engineering in organic thermoelectric materials 被引量:2
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作者 Xiaojuan Dai Qing Meng +3 位作者 Fengjiao Zhang Ye Zou Chong-an Di Daoben Zhu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2021年第11期204-219,I0005,共17页
Electronic structures, which play a key role in determining electrical and optical properties of π-conjugated organic materials, have attracted tremendous interest. Efficient thermoelectric (TE) conversion of organic... Electronic structures, which play a key role in determining electrical and optical properties of π-conjugated organic materials, have attracted tremendous interest. Efficient thermoelectric (TE) conversion of organic materials has rigorous requirements on electronic structures. Recently, the rational design and precise modulation of electronic structures have exhibited great potential in exploring state-of-the-art organic TE materials. This review focuses on the regulation of electronic structures of organic materials toward efficient TE conversion. First, we present the basic knowledge regarding electronic structures and the requirements for efficient TE conversion of organic materials, followed by a brief introduction of commonly used methods for electronic structure characterization. Next, we highlight the key strategies of electronic structure engineering for high-performance organic TE materials. Finally, an overview of the electronic structure engineering of organic TE materials, along with current challenges and future research directions, are provided. 展开更多
关键词 Organic thermoelectric materials Electronic structure Organic semiconductors
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Thermoelectric properties of porous (Bi_(0.15)Sb_(0.85))_2Te_3 thermoelectric materials 被引量:1
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作者 Guiying Xu, Tingjie Chen, Jianqiang Liu, and Zhangjian ZhouLaboratory of Special Ceramics and Powder Metallurgy, Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China 《Journal of University of Science and Technology Beijing》 CSCD 2003年第5期39-43,共5页
In order to obtain thermoelectric materials with high figure of merit, theconcept of Hollow (Vacuum) Quantum Structure or Effect and related thermoelectric materials designwere proposed. To demonstrate the theory, the... In order to obtain thermoelectric materials with high figure of merit, theconcept of Hollow (Vacuum) Quantum Structure or Effect and related thermoelectric materials designwere proposed. To demonstrate the theory, the materials of (Bi_(0.15)Sb_(0.85))_2Te_3 with porousstructure have been fabricated. Their thermoelectric properties and the microstructure wereinvestigated and compared with their density structure. It was found that the porous structure couldimprove their properties greatly. 展开更多
关键词 thermoelectric materials Bi_xSb_(1-x) Bi_2Te_3 hollow quantum effect
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An Overview of Advanced Chalcogenide Thermoelectric Materials and Their Applications 被引量:1
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作者 Fiseha Tesfaye Mykola Moroz 《Journal of Electronic Research and Application》 2018年第2期28-41,共14页
Thermoelectricity is a strong scientific and technological interest due to its wide application ranging from clean energy producing to photon sensing devices.Recent developments in theoretical studies on the thermoele... Thermoelectricity is a strong scientific and technological interest due to its wide application ranging from clean energy producing to photon sensing devices.Recent developments in theoretical studies on the thermoelectric(TE)effects as well as the newly discovered thermoelectric materials provide new opportunities for several applications.Though the scale of production is limited,thermoelectric technology provides an alternative to traditional methods of power generation,heating and cooling systems.TE technologies can be used in power generation,heating and cooling applications.They potentially offer significant energy savings through waste heat recovery and augmented cooling.This article critically discusses the current progress in chalcogenide TE materials and the advantages and limitations associated with the TE technologies.The need for new materials discoveries from the point of view of achieving higher figure-of-merit combined with thermal stabilities in intermediate-and hightemperature Peltier and Seebeck effects applications is also emphasized.Besides,this article aims to evaluate the main features of recently characterized multicomponent chalcogenide ionic compounds with high thermal stabilities as potential TE materials to harvest electric power from high-temperature heat flux via thermoelectricity. 展开更多
关键词 thermoelectric materials CONDUCTIVITY thermal stability renewable energy
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Thermoelectric Properties of N-typer Bi_2Te_3-PbTe Graded Thermoelectric Materials with Different Barriers
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作者 Guiying Xu, Changchun Ge, Yanping Gao, Weiping Shen Laboratory of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing. Beijing 100083, China 《Journal of University of Science and Technology Beijing》 CSCD 2001年第4期267-269,共3页
In order to investigate the adaptability of thermoelectric materials system with different barriers to functional graded thermoelectric materials, n-type Bi2Te, and PbTe two segments graded thermoelectric materials (G... In order to investigate the adaptability of thermoelectric materials system with different barriers to functional graded thermoelectric materials, n-type Bi2Te, and PbTe two segments graded thermoelectric materials (GTM) with different barriers were fabricated by conventional hot pressing method. Metals Cu, Al, Fe, Co and Ni were used as barriers between two segments. The effects of different barriers on thermoelectric properties of GTM were investigated. The phase and crystal structures were determined by x-ray diffraction analysis (XRD). The distributions of different compositions were analyzed by electron microprobe analysis (EMA). The thermoelectric properties were measured at 303 K along the direction parallel to the pressing direction. The electric conductivity of samples was measured at 303 K by the four-probe technique. To measure the Seebeck coefficient, heat was applied to the samples, which were placed between two Cu discs. The thermoelectric electromotive force (E) was measured upon applying small temperature differences (DeltaT<275 K) between the both ends of the samples. The Seebeck coefficient of the samples was determined from the E/&UDelta;T. 展开更多
关键词 thermoelectric property Bi2Te3-PbTe graded thermoelectric materials
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Thermoelectric properties of p-type Bi-Sb-Te compositionally graded thermoelectric materials with different barriers
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作者 GuyingXu ChangchunGe 《Journal of University of Science and Technology Beijing》 CSCD 2002年第5期386-388,共3页
In order to find more suitable materials as barriers and to improve the thermoelectric properties, p-type (Bi1-xSbx) 2Te3 (x = 0.85, 0.9) two segments compositionally graded thermoelectric materials (CGTM) with differ... In order to find more suitable materials as barriers and to improve the thermoelectric properties, p-type (Bi1-xSbx) 2Te3 (x = 0.85, 0.9) two segments compositionally graded thermoelectric materials (CGTM) with different barriers were fabricated by conventional hot pressure method. Metals Fe, Co, Cu and Al were used as barriers between two segments. The effects of different barriers on thermoelectric properties of CGTM were investigated. The results show that metal Fe is more stable and suitable as the barrier. 展开更多
关键词 compositionally graded thermoelectric materials BARRIER thermoelectric property
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Surface contact behavior of functionally graded thermoelectric materials indented by a conducting punch 被引量:2
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作者 Xiaojuan TIAN Yueting ZHOU +1 位作者 Lihua WANG Shenghu DING 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2021年第5期649-664,共16页
The contact problem for thermoelectric materials with functionally graded properties is considered.The material properties,such as the electric conductivity,the thermal conductivity,the shear modulus,and the thermal e... The contact problem for thermoelectric materials with functionally graded properties is considered.The material properties,such as the electric conductivity,the thermal conductivity,the shear modulus,and the thermal expansion coefficient,vary in an exponential function.Using the Fourier transform technique,the electro-thermoelastic problems are transformed into three sets of singular integral equations which are solved numerically in terms of the unknown normal electric current density,the normal energy flux,and the contact pressure.Meanwhile,the complex homogeneous solutions of the displacement fields caused by the gradient parameters are simplified with the help of Euler’s formula.After addressing the non-linearity excited by thermoelectric effects,the particular solutions of the displacement fields can be assessed.The effects of various combinations of material gradient parameters and thermoelectric loads on the contact behaviors of thermoelectric materials are presented.The results give a deep insight into the contact damage mechanism of functionally graded thermoelectric materials(FGTEMs). 展开更多
关键词 thermoelectric material functionally graded property conducting punch conjugate complex root energy flux contact pressure
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Thermoelectric properties of BiSb_x (x=0.6-0.8) thermoelectric materials fabricated by different processing
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作者 Guiying Xu, Zhangjian Zhou, Sitong Niu, and Jianqiang LiuLaboratory of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing, Beijing 100083, China 《Journal of University of Science and Technology Beijing》 CSCD 2003年第2期65-67,共3页
In order to improve the thermoelectric properties, hot-pressing sintering andultra high pressure sintering methods were adopted to fabricate BiSb_x. The phase and crystalstructures were determined by X-ray diffraction... In order to improve the thermoelectric properties, hot-pressing sintering andultra high pressure sintering methods were adopted to fabricate BiSb_x. The phase and crystalstructures were determined by X-ray diffraction analysis (XRD). The thermoelectric properties weremeasured at 303 K along the direction parallel to the pressing direction. The electric conductivityof the samples was measured at 303 K by the four-probe technique. To measure the Seebeckcoefficient, heat was applied to the samples placed between two Cu discs. The thermoelectricelectromotive force (E) was measured upon applying small temperature differences (DELTA T<2 deg C)between the both ends of the samples. The Seebeck coefficient of the samples was determined from thevalue of E/DELTA T. The results indicate that the thermoelectric properties of the samplesfabricated by UHPS (ultra high pressure sintering) method are much higher than that by HPS (hotpressing sintering) method and have the highest values at x=0.7. 展开更多
关键词 thermoelectric property thermoelectric material ultra high pressuresintering BiSb_x
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Processing of advanced thermoelectric materials 被引量:16
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作者 LI JingFeng PAN Yu +2 位作者 WU ChaoFeng SUN FuHua WEI TianRan 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2017年第9期1347-1364,共18页
Last two decades have witnessed significant progress in thermoelectric research, to which materials processing has crucial contributions. Compared with traditional zone-melting method used for fabricating bismuth tell... Last two decades have witnessed significant progress in thermoelectric research, to which materials processing has crucial contributions. Compared with traditional zone-melting method used for fabricating bismuth telluride alloys, new powder-based processes have more freedom for manipulating nanostructnres and nanocomposites. Thermoelectric performance enhancement is realized in most thermoelectric materials by introducing fine-grained and nano-composite structures with accurately controlled compositions. This review gives a comprehensive summary on the processing aspects of thermoelectric materials with three focuses on the powder synthesis, advanced sintering process and the formation of nanostructures in bulk materials. 展开更多
关键词 thermoelectricS materials processing nanostructured thermoelectric materials mechanical alloying spark plasmasintering
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Low-cost and environmentally benign selenides as promising thermoelectric materials 被引量:12
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作者 Tian-Ran Wei Chao-Feng Wu +1 位作者 Fu Li Jing-Feng Li 《Journal of Materiomics》 SCIE EI 2018年第4期304-320,共17页
Developing high-efficiency materials with earth-abundant and low-toxicity elements has become a popular trend in the field of thermoelectrics.Among these compounds,oxides and sulfides,the lighter,cheaper and green ana... Developing high-efficiency materials with earth-abundant and low-toxicity elements has become a popular trend in the field of thermoelectrics.Among these compounds,oxides and sulfides,the lighter,cheaper and green analogies of tellurides,have been extensively investigated and summarized as well defined classes.Nonetheless,the vast family of selenides with better electrical performance,lower thermal conductivity and higher thermoelectric efficiency have not been specially discussed.Here in this review,we present recent advances in binary and multinary selenide thermoelectric materials,covering traditional PbSe,liquid-like Cu_(2)Se,layered SnSe,diamond-like and disordered multinary compounds.The features of selenides are discussed based on both environmental concerns and from the perspective of chemical bonding,transport properties and performance.Emphasis is put on the“compositionstructure-processing-performance”relationship,and some interesting issues are addressed.Finally,challenges for thermoelectric selenides are discussed,and possible optimization strategies are also suggested. 展开更多
关键词 thermoelectric materials SELENIDES Transport properties
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Heat Conduction in Multilayered Thermoelectric Materials with Multiple Cracks 被引量:5
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作者 Shenghu Ding Yueting Zhou 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2018年第4期512-522,共11页
Multilayer thin-film thermoelectric materials are of technological importance. This paper describes a method to analyze the heat conduction in a multilayered thermoelectric plate containing some non-collinear cracks. ... Multilayer thin-film thermoelectric materials are of technological importance. This paper describes a method to analyze the heat conduction in a multilayered thermoelectric plate containing some non-collinear cracks. The material properties in one layer may be different from those in another even though each layer may still be homogeneous. Using the Fourier integral transforms, the boundary value problem is reduced to a system of general singular integral equations. The model is sufficiently general to account for any number of layers and any number of cracks. As a numerical illustration, the electric flux intensity factor, energy flux intensity factor and thermal flux intensity factor for a three-layer plate specimen with two cracks are presented. The effects of strip width on the electric flux intensity factor and thermal flux intensity factor are studied. 展开更多
关键词 MULTILAYER thermoelectric materials CRACK Singular integral equation Intensityfactors
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When thermoelectric materials come across with magnetism 被引量:4
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作者 Chen-Chen Zhao Chong Xiao 《Rare Metals》 SCIE EI CAS CSCD 2021年第4期752-766,共15页
Nowadays,thermoelectric materials have attracted a lot of attention as they can directly convert heat into electricity and vice versa.However,while strenuous efforts have been made,those conventional strategies are st... Nowadays,thermoelectric materials have attracted a lot of attention as they can directly convert heat into electricity and vice versa.However,while strenuous efforts have been made,those conventional strategies are still inevitably going to meet their performance optimization limits.For this reason,brand new strategies are badly needed to achieve further enhancement.Here,the roles played by magnetism in recent advances of thermoelectric optimization are concluded.Firstly,magnetic thermoelectric materials can just be treated like other normal materials because the use of universal optimization strategies can still get good results.So,it is not a situation which is all or nothing and the tactics of using magnetism for thermoelectric optimization can coexist with other strategies.Besides,through magnetic doping,we can introduce and adjust magnetism in materials for further optimization.Magnetism provides more possibilities in thermoelectric optimization as it can directly influence the spin states in materials.Furthermore,in the form of magnetic secondphase nanoclusters,magnetism can be introduced to thermoelectric materials to conquer the dilemma that the solid solubility of many magnetic ions in thermoelectric materials is too low to have any significant effect on thermoelectric properties.Finally,when exposed to an external magnetic field,topological materials can rely on its unique band structures to optimize. 展开更多
关键词 thermoelectricITY Magnetic thermoelectric materials MAGNETISM Magnetic doping Magnetic second phase
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Machine learning assisted discovering of new M_(2)X_(3)-type thermoelectric materials 被引量:4
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作者 Du Chen Feng Jiang +3 位作者 Liang Fang Yong-Bin Zhu Cai-Chao Ye Wei-Shu Liu 《Rare Metals》 SCIE EI CAS CSCD 2022年第5期1543-1553,共11页
Recent years have witnessed a continuous discovering of new thermoelectric materials which has experienced a paradigm shift from try-and-error efforts to experience-based discovering and first-principles calculation. ... Recent years have witnessed a continuous discovering of new thermoelectric materials which has experienced a paradigm shift from try-and-error efforts to experience-based discovering and first-principles calculation. However, both the experiment and first-principles calculation deriving routes to determine a new compound are time and resources consuming. Here, we demonstrated a machine learning approach to discover new M_(2)X_(3)-type thermoelectric materials with only the composition information. According to the classic Bi_(2)Te_(3) material, we constructed an M_(2)X_(3)-type thermoelectric material library with 720 compounds by using isoelectronic substitution, in which only 101 compounds have crystalline structure information in the Inorganic Crystal Structure Database(ICSD) and Materials Project(MP) database. A model based on the random forest(RF) algorithm plus Bayesian optimization was used to explore the underlying principles to determine the crystal structures from the known compounds. The physical properties of constituent elements(such as atomic mass, electronegativity, ionic radius) were used to define the feature of the compounds with a general formula ^(1)M^(2)M^(1)X^(2)X^(3)X(^(1)M +^(2)M:^(1)X +^(2)X+^(3)X = 2:3). The primary goal is to find new thermoelectric materials with the same rhombohedral structure as Bi_(2)Te_(3) by machine learning.The final trained RF model showed a high accuracy of 91% on the prediction of rhombohedral compounds. Finally, we selected four important features to proceed with the polynomial fitting with the prediction results from the RF model and used the acquired polynomial function to make further discoveries outside the pre-defined material library. 展开更多
关键词 thermoelectric materials M_(2)X_(3)-type material library Random forest(RF)algorithm Bayesian optimization Machine learning
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Polymer-based thermoelectric materials:A review of power factor improving strategies 被引量:4
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作者 Jiang Li Alayna Brieann Huckleby Mei Zhang 《Journal of Materiomics》 SCIE 2022年第1期204-220,共17页
Thermoelectric(TE)materials are receiving increasing attention due to their ability to directly converting heat to electricity.They are used to harvest electrical energy from the wasted heat in order to increase the e... Thermoelectric(TE)materials are receiving increasing attention due to their ability to directly converting heat to electricity.They are used to harvest electrical energy from the wasted heat in order to increase the efficiency of global energy.Polymer-based TE materials are particularly fascinating to wearable and mobile devices due to their low density,good flexibility,and low toxicity.This review summarizes the recent breakthroughs and optimization strategies of polymer-based TE materials.Among a large number of different organic TE materials,those with remarkable TE performance are selected and divided into three categories,which are poly(3,4-ethylenedioxythiophene)derivatives,carbon nanotube/conductive polymer composites,and inorganic semiconductive nanomaterial/polymer composites.The effect of components and structures on the power factor are presented and discussed.Finally,some challenges are described and suggestions are provided for preparing the next-generation of polymer-based materials with high TE performance. 展开更多
关键词 thermoelectric materials Conductive polymers poly(3 4-ethylenedioxythiophene) DERIVATIVES Carbon nanotubes Power factor
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Advances in organic thermoelectric materials and devices for smart applications 被引量:6
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作者 Yue Zhao Liyao Liu +2 位作者 Fengjiao Zhang Chong‐an Di Daoben Zhu 《SmartMat》 2021年第4期426-445,共20页
Organic thermoelectric(OTE)materials have been considered to be promising candidates for large area and low‐cost wearable devices owing to their tailorable molecular structure,intrinsic flexibility,and prominent solu... Organic thermoelectric(OTE)materials have been considered to be promising candidates for large area and low‐cost wearable devices owing to their tailorable molecular structure,intrinsic flexibility,and prominent solution processability.More importantly,OTE materials offer direct energy conversion from the human body,solid‐state cooling at low electric consumption,and diversified functions.Herein,we summarize recent developments of OTE materials and devices for smart applications.We first review the fundamentals of OTE materials from the viewpoint of thermoelectric performance,mechanical properties and bionic functions.Second,we describe OTE devices in flexible generators,photothermoelectric detectors,self‐powered sensors,and ultra‐thin cooling elements.Finally,we present the challenges and perspectives on OTE materials as well as devices in wearable electronics and fascinating applications in the Internet of Things. 展开更多
关键词 flexible generators organic thermoelectric materials self‐powered sensors smart electronics thin‐film cooling
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Room-temperature thermoelectric materials: Challenges and a new paradigm 被引量:5
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作者 Zhijia Han Jing-Wei Li +4 位作者 Feng Jiang Jiating Xia Bo-Ping Zhang Jing-Feng Li Weishu Liu 《Journal of Materiomics》 SCIE 2022年第2期427-436,共10页
Room-temperature thermoelectric materials provide promising solutions for energy harvesting from the environment,and deliver a maintenance-free power supply for the internet-of-things(IoTs).The currently available Bi_... Room-temperature thermoelectric materials provide promising solutions for energy harvesting from the environment,and deliver a maintenance-free power supply for the internet-of-things(IoTs).The currently available Bi_(2)Te_(3) family discovered in the 1950s,still dominates industrial applications,however,it has serious disadvantages of brittleness and the resource shortage of tellurium(1×10^(-3) ppm in the earth's crust).The novel Mg_(3)Sb_(2) family has received increasing attention as a promising alternative for room-temperature thermoelectric materials.In this review,the development timeline and fabrication strategies of the Mg 3 Sb 2 family are depicted.Moreover,an insightful comparison between the crystal-linity and band structures of Mg_(3)Sb_(2) and Bi_(2)Te_(3) is drawn.An outlook is presented to discuss challenges and new paradigms in designing room-temperature thermoelectric materials. 展开更多
关键词 thermoelectric materials Mg_(3)Sb_(2) Bi_(2)Te_(3) Chemical bond engineering
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Editorial for rare metals, special issue on advanced thermoelectric materials 被引量:3
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作者 Yan-Zhong Pei Xiao-Yuan Zhou Tie-Jun Zhu 《Rare Metals》 SCIE EI CAS CSCD 2018年第4期257-258,共2页
As a clean energy technology to combat the global energy dilemma and the environmental problems, thermoelectrics that enable a direct conversion between heat and electricity have attracted increasing attention in rece... As a clean energy technology to combat the global energy dilemma and the environmental problems, thermoelectrics that enable a direct conversion between heat and electricity have attracted increasing attention in recent decades. This solid-state, vibrationless technology has long been used for powering the spacecrafts of several deep-space missions and has limited commercial use in niche market, but these are now actively considered for a variety of new applications, such as the conversion of automobile exhaust heat into electricity. Meanwhile, materials research flourishes with the knowledge that significantly improves the thermoelectric efficiency for even more applications. This motivates Rare Metals to have a special issue focusing on thermoelectrics. 展开更多
关键词 Editorial for rare metals special issue on advanced thermoelectric materials
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Planar Zintl-phase high-temperature thermoelectric materials XCuSb(X=Ca,Sr,Ba)with low lattice thermal conductivity 被引量:1
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作者 Sikang ZHENG Kunling PENG +6 位作者 Shijuan XIAO Zizhen ZHOU Xu LU Guang HAN Bin ZHANG Guoyu WANG Xiaoyuan ZHOU 《Journal of Advanced Ceramics》 SCIE EI CAS CSCD 2022年第10期1604-1612,共9页
A recent discovery of high-performance Mg_(3)Sb_(2) has ignited tremendous research activities in searching for novel Zintl-phase compounds as promising thermoelectric materials.Herein,a series of planar Zintl-phase X... A recent discovery of high-performance Mg_(3)Sb_(2) has ignited tremendous research activities in searching for novel Zintl-phase compounds as promising thermoelectric materials.Herein,a series of planar Zintl-phase XCuSb(X=Ca,Sr,Ba)thermoelectric materials are developed by vacuum induction melting.All these compounds exhibit high carrier mobilities and intrinsic low lattice thermal conductivities(below 1 W·m^(−1)·K^(−1) at 1010 K),resulting in peak p-type zT values of 0.14,0.30,and 0.48 for CaCuSb,SrCuSb,and BaCuSb,respectively.By using BaCuSb as a prototypical example,the origins of low lattice thermal conductivity are attributed to the strong interlayer vibrational anharmonicity of Cu–Sb honeycomb sublattice.Moreover,the first-principles calculations reveal that n-type BaCuSb can achieve superior thermoelectric performance with the peak zT beyond 1.1 because of larger conducting band degeneracy.This work sheds light on the high-temperature thermoelectric potential of planar Zintl compounds,thereby stimulating intense interest in the investigation of this unexplored material family for higher zT values. 展开更多
关键词 Zintl-phase thermoelectric materials honeycomb lattice intrinsic lowκ_(L)
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A general strategy for high-throughput experimental screening of promising bulk thermoelectric materials 被引量:1
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作者 Shiyang He Yang Yang +4 位作者 Zhili Li Jiye Zhang Chenyang Wang Wenqing Zhang Jun Luo 《Science China Materials》 SCIE EI CAS CSCD 2021年第7期1751-1760,共10页
High-throughput(HTP)experiments play key roles in accelerating the discovery of advanced materials,but the HTP preparation and characterization,especially for bulk samples,are extremely difficult.In this work,we devel... High-throughput(HTP)experiments play key roles in accelerating the discovery of advanced materials,but the HTP preparation and characterization,especially for bulk samples,are extremely difficult.In this work,we developed a novel and general strategy for HTP screening of high-performance bulk thermoelectric materials.The performed fullchain HTP experiments cover rapid synthesis of the bulk sample with quasi-continuous composition,microarea phase identification and structure analysis,and measurement of the spatial distribution of the sample composition,electrical and thermal transport properties.According to our experiments,bulk Bi_(2-x)Sb_(x)Te_(3)(x=1-2)and Bi_(2)Te_(3-x)Se_(x)(x=0-1.5)samples with quasi-continuous compositions have been rapidly fabricated by this HTP method.The target thermoelectric materials with the best Sb/Bi and Te/Se ratios are successfully screened out based on subsequent HTP characterization results,demonstrating that this HTP technique is effective in speeding up the exploration of novel high-performance thermoelectric materials. 展开更多
关键词 high-throughput experimental screening thermoelectric materials electrical transport properties thermal transport properties (Bi Sb)_(2)(Te Se)_(3)
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