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Enhancing Li-S battery performance via functional polymer binders for polysulfide inhibition
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作者 Jinpeng Jian Qian Chen +6 位作者 Hao Sun Rui Li Yaolin Hou Yulong Liu Jia Liu Haiming Xie Jiefang Zhu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第10期228-236,I0005,共10页
The commercialization of lithium-sulfur(Li-S)batteries faces several challenges,including poor conductivity,unexpected volume expansion,and continuous sulfur loss from the cathode due to redox shuttling.In this study,... The commercialization of lithium-sulfur(Li-S)batteries faces several challenges,including poor conductivity,unexpected volume expansion,and continuous sulfur loss from the cathode due to redox shuttling.In this study,we introduce a novel polymer via a simple cross-linking between poly(ether-thioureas)(PETU)and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)(PEDOT:PSS)as a bifunctio nal binder for Li-S batteries(devotes as"PPTU").Compared to polyvinylidene fluoride(PVDF),as-prepared PPTU exhibits significantly higher electrical conductivity,facilitating electrochemical reactions.Additionally,PPTU demonstrates effective adsorption of lithium polysulfides,leading to improved cycling stability by suppressing the shuttling effect.We investigate this behavior by monitoring morphological changes at the cell interface using synchrotron X-ray tomography.Cells with PPTU binders exhibit remarkable rate performance,desired reversibility,and excellent cycling stability even under stringent bending and twisting conditions.Our work represents promising progress in functional polymer binder development for Li-S batteries. 展开更多
关键词 Li-S batteries Bifunctional binders electrode conductivity Shuttle effect
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Solution‑Processed Transparent Conducting Electrodes for Flexible Organic Solar Cells with 16.61% Efficiency 被引量:5
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作者 Juanyong Wan Yonggao Xia +8 位作者 Junfeng Fang Zhiguo Zhang Bingang Xu Jinzhao Wang Ling Ai Weijie Song Kwun Nam Hui Xi Fan Yongfang Li 《Nano-Micro Letters》 SCIE EI CAS CSCD 2021年第3期39-52,共14页
Nonfullerene organic solar cells(OSCs)have achieved breakthrough with pushing the efficiency exceeding 17%.While this shed light on OSC commercialization,high-performance flexible OSCs should be pursued through soluti... Nonfullerene organic solar cells(OSCs)have achieved breakthrough with pushing the efficiency exceeding 17%.While this shed light on OSC commercialization,high-performance flexible OSCs should be pursued through solution manufacturing.Herein,we report a solution-processed flexible OSC based on a transparent conducting PEDOT:PSS anode doped with trifluoromethanesulfonic acid(CF3SO3H).Through a low-concentration and low-temperature CF3SO3H doping,the conducting polymer anodes exhibited a main sheet resistance of 35Ωsq−1(minimum value:32Ωsq−1),a raised work function(≈5.0 eV),a superior wettability,and a high electrical stability.The high work function minimized the energy level mismatch among the anodes,hole-transporting layers and electron-donors of the active layers,thereby leading to an enhanced carrier extraction.The solution-processed flexible OSCs yielded a record-high efficiency of 16.41%(maximum value:16.61%).Besides,the flexible OSCs afforded the 1000 cyclic bending tests at the radius of 1.5 mm and the long-time thermal treatments at 85°C,demonstrating a high flexibility and a good thermal stability. 展开更多
关键词 Solution-processed transparent conducting electrode Flexible organic solar cell PEDOT:PSS Trifluoromethanesulfonic acid doping Solution processing
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Biomimic Vein-Like Transparent Conducting Electrodes with Low Sheet Resistance and Metal Consumption
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作者 Guobin Jia Jonathan Plentz +4 位作者 Andrea Dellith Christa Schmidt Jan Dellith Gabriele Schmidl Gudrun Andr? 《Nano-Micro Letters》 SCIE EI CAS CSCD 2020年第2期47-59,共13页
In this contribution,inspired by the excellent resource management and material transport function of leaf veins,the electrical transport function of metallized leaf veins is mimicked from the material transport funct... In this contribution,inspired by the excellent resource management and material transport function of leaf veins,the electrical transport function of metallized leaf veins is mimicked from the material transport function of the vein networks.By electroless copper plating on real leaf vein networks with copper thickness of only several hundred nanometre up to several micrometre,certain leaf veins can be converted to transparent conductive electrodes with an ultralow sheet resistance 100 times lower than that of state-of-the-art indium tin oxide thin films,combined with a broadband optical transmission of above 80%in the UV–VIS–IR range.Additionally,the resource efficiency of the vein-like electrode is characterized by the small amount of material needed to build up the networks and the low copper consumption during metallization.In particular,the high current density transport capability of the electrode of>6000 A cm^−2 was demonstrated.These superior properties of the vein-like structures inspire the design of high-performance transparent conductive electrodes without using critical materials and may significantly reduce the Ag consumption down to<10%of the current level for mass production of solar cells and will contribute greatly to the electrode for high power density concentrator solar cells,high power density Li-ion batteries,and supercapacitors. 展开更多
关键词 Biomimic leaf vein network Transparent conducting electrode Sheet resistance Metal consumption
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A Mini Review: Can Graphene Be a Novel Material for Perovskite Solar Cell Applications? 被引量:5
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作者 Eng Liang Lim Chi Chin Yap +2 位作者 Mohammad Hafizuddin Hj Jumali Mohd Asri Mat Teridi Chin Hoong Teh 《Nano-Micro Letters》 SCIE EI CAS 2018年第2期92-103,共12页
Perovskite solar cells(PSCs) have raised research interest in scientific community because their power conversion efficiency is comparable to that of traditional commercial solar cells(i.e., amorphous Si, GaAs,and CdT... Perovskite solar cells(PSCs) have raised research interest in scientific community because their power conversion efficiency is comparable to that of traditional commercial solar cells(i.e., amorphous Si, GaAs,and CdTe). Apart from that, PSCs are lightweight, are flexible, and have low production costs. Recently, graphene has been used as a novel material for PSC applications due to its excellent optical, electrical, and mechanical properties. The hydrophobic nature of graphene surface can provide protection against air moisture from the surrounding medium, which can improve the lifetime of devices. Herein, we review recent developments in the use of graphene for PSC applications as a conductive electrode,carrier transporting material, and stabilizer material. By exploring the application of graphene in PSCs, a new class of strategies can be developed to improve the device performance and stability before it can be commercialized in the photovoltaic market in the near future. 展开更多
关键词 Perovskite solar cells GRAPHENE Conductive electrode Carrier transporting material Stabilizer material Performance and stability
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Transparent Supercapacitors: From Optical Theories to Optoelectronics Applications
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作者 Sang-Woo Kim Sang-Young Lee 《Energy & Environmental Materials》 2020年第3期265-285,共21页
The ever-increasing demand for smart optoelectronics spurs the relentless pursuit of transparent wireless devices as a game-changing technology that can provide unseen visual information behind the electronics.To enab... The ever-increasing demand for smart optoelectronics spurs the relentless pursuit of transparent wireless devices as a game-changing technology that can provide unseen visual information behind the electronics.To enable successful operation of the transparent wireless devices,their power sources should be highly transparent in addition to acquiring reliable electrochemical performance.Among various transparent power sources,supercapacitors(SCs)have been extensively investigated as a promising candidate due to their exceptional cyclability,power capability,material diversity,and scalable/low-cost processability.Herein,we describe current status and challenges of transparent SCs,with a focus on their core materials,performance advancements,and integration with application devices.A special attention is devoted to transparent conductive electrodes(TCEs)which act as a keyenabling component in the transparent SCs.Based on fundamental understanding of optical theories and operating principles of transparent materials,we comprehensively discuss materials chemistry,structural design,and fabrication techniques of TCEs.In addition,noteworthy progresses of transparent SCs are briefly overviewed in terms of their architectural design,opto-electrochemical performance,flexibility,form factors,and integration compatibility with transparent flexible/wearable devices of interest.Finally,development direction and outlook of transparent SCs are explored along with their viable roles in future application fields. 展开更多
关键词 energy storage FLEXIBILITY OPTOELECTRONICS transparent conductive electrodes transparent supercapacitors
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Flexible and stretchable electrodes for next generation polymer electronics: a review 被引量:9
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作者 Dustin Chen Jiajie Liang Qibing Pei 《Science China Chemistry》 SCIE EI CAS CSCD 2016年第6期659-662,共4页
Transparent conductive electrodes play a significant role in the fabrication and development of optoelectronic devices. As next generation optoelectronic devices tend towards mobile and wearable devices, the added att... Transparent conductive electrodes play a significant role in the fabrication and development of optoelectronic devices. As next generation optoelectronic devices tend towards mobile and wearable devices, the added attribute of flexibility or stretchability for these electrodes becomes increasingly important. However, mechanical requirements aside, transparent conductive electrodes must still retain high transparency and conductivity, with the metrics for these parameters being compared to the standard, indium tin oxide. In the search to replace indium tin oxide, two materials that have risen to the forefront are carbon nanotubes and silver nanowires due to their high transparency, conductivity, mechanical compliance, and ease of fabrication. This review highlights recent innovations made by our group in electrodes utilizing carbon nanotubes and silver nanowires, in addition to the use of these electrodes in discrete devices and integrated systems. 展开更多
关键词 transparent conductive electrode carbon nanotube silver nanowire FLEXIBLE STRETCHABLE OLED
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Printable inorganic nanomaterials for flexible transparent electrodes:from synthesis to application 被引量:3
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作者 Dingrun Wang Yongfeng Mei Gaoshan Huang 《Journal of Semiconductors》 EI CAS CSCD 2018年第1期16-37,共22页
Printed and flexible electronics are definitely promising cutting-edge electronic technologies of the future. They offer a wide-variety of applications such as flexible circuits, flexible displays, flexible solar cell... Printed and flexible electronics are definitely promising cutting-edge electronic technologies of the future. They offer a wide-variety of applications such as flexible circuits, flexible displays, flexible solar cells, skinlike pressure sensors, and radio frequency identification tags in our daily life. As the most-fundamental component of electronics, electrodes are made of conductive materials that play a key role in flexible and printed electronic devices. In this review, various inorganic conductive materials and strategies for obtaining highly conductive and uniform electrodes are demonstrated. Applications of printed electrodes fabricated via these strategies are also described. Nevertheless, there are a number of challenges yet to overcome to optimize the processing and performance of printed electrodes. 展开更多
关键词 printed electrodes conductive ink metal nanomaterials carbonaceous materials composite nanomaterials
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Sb_(2)Se_(3)as a bottom cell material for efficient perovskite/Sb_(2)Se_(3)tandem solar cells
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作者 Zhiyuan Cai Jia Sun +5 位作者 Huiling Cai Yuehao Gu Rongfeng Tang Changfei Zhu Paifeng Luo Tao Chen 《Energy Materials and Devices》 2024年第1期54-63,共10页
Antimony selenide(Sb_(2)Se_(3))semiconducting material possesses a band gap of 1.05-1.2 eV and has been widely applied in single-junction solar cells.Based on its band gap,Sb_(2)Se_(3)can also be used as the bottom ce... Antimony selenide(Sb_(2)Se_(3))semiconducting material possesses a band gap of 1.05-1.2 eV and has been widely applied in single-junction solar cells.Based on its band gap,Sb_(2)Se_(3)can also be used as the bottom cell absorber material in tandem solar cells.More importantly,Sb_(2)Se_(3)solar cells exhibit excellent stability with nontoxic compositional elements.The band gap of organic-inorganic hybrid perovskite is tunable over a wide range.In this work,we demonstrate for the first time a perovskite/antimony selenide four-terminal tandem solar cell with a specially designed and fabricated transparent electrode for an optimized spectral response.By adjusting the thickness of the transparent electrode layer of the top cell,the wide-band-gap perovskite top solar cell achieves an efficiency of 17.88%,while the optimized antimony selenide bottom cell delivers a power conversion efficiency of 7.85%by introducing a double electron transport layer.Finally,the four-termi-nal tandem solar cell achieves an impressive efficiency exceeding 20%.This work provides a new tandem device structure and demonstrates that antimony selenide is a promising absorber material for bottom cell applications in tandem solar cells. 展开更多
关键词 tandem solar cells four-terminal antimony selenide perovskite transparent conducting electrode
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Applications of transition-metal sulfides in the cathodes of lithium-sulfur batteries 被引量:9
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作者 Jing‑Han Zuo Yong‑Ji Gong 《Tungsten》 2020年第2期134-146,共13页
Lithium-sulfur(Li-S)batteries are considered as one of the most promising candidates for next-generation energy storage systems with high energy density and reliable performance.However,the commercial applications of ... Lithium-sulfur(Li-S)batteries are considered as one of the most promising candidates for next-generation energy storage systems with high energy density and reliable performance.However,the commercial applications of lithium-sulfur batteries is hindered by several shortcomings like the poor conductivity of sulfur and its reaction products,and the loss of active materials owing to the diffusion of lithium polysulfides(LiPSs)into the electrolyte.Hence,the effective restraining of the LiPSs and the promotion of the sluggish conversion are highly demanded to fulfill the potential of lithium-sulfur batteries.Here,we summarize the applications of transition-metal sulfides(TMSs)in the cathodes over recent years and demonstrate the unique advantages they possess to realize reliable long-life lithium-sulfur batteries. 展开更多
关键词 Lithium–sulfur battery Transition metal sulfides Polysulfide adsorption electrode conductivity ELECTROCATALYSIS
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Optical haze of transparent and conductive silver nanowire films 被引量:14
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作者 Colin Preston Yunlu Xu +2 位作者 Xiaogang Han Jeremy N. Munday Liangbing Hu 《Nano Research》 SCIE EI CAS CSCD 2013年第7期461-468,共8页
Contemporary nanostructured transparent electrodes for use in solar cells require high transmittance and high conductivity, dictating nanostructures with high aspect ratios. Optical haze is an equally important yet un... Contemporary nanostructured transparent electrodes for use in solar cells require high transmittance and high conductivity, dictating nanostructures with high aspect ratios. Optical haze is an equally important yet unstudied parameter in transparent electrodes for solar cells that is also determined by the geometry of the nanostructures that compose the electrode. In this work, the effect of the silver nanowire diameter on the optical haze values in the visible spectrum was investigated using films composed of wires with either small diameters (N60 nm) or large diameters (~150 nm). Finite difference time domain (FDTD) simulations and experimental transmittance data confirm that smaller diameter nanowires form higher performing transparent conducting electrode (TCE) films according to the current figure of merit. While maintaining near constant transmittance and conductivity for each film, however, it was observed experimentally that films composed of silver nanowires with larger diameters have a higher haze factor than films with smaller diameters. This confirms the FDTD simulations of the haze factor for single nanowires with similarly large and small diameters. This is the first record of haze properties for Ag NWs that have been simulated or experimentally measured, and also the first evidence that the current figure of merit for TCEs is insufficient to evaluate their performance in solar cell devices. 展开更多
关键词 solar cell transparent conducting electrode silver nanowire haze factor light trapping
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Graphene-based flexible and wearable electronics 被引量:7
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作者 Tanmoy Das Bhupendra K.Sharma +1 位作者 Ajit K.Katiyar Jong-Hyun Ahn 《Journal of Semiconductors》 EI CAS CSCD 2018年第1期86-104,共19页
Graphene with an exceptional combination of electronic, optical and outstanding mechanical features has been proved to lead a completely different kind of 2-D electronics. The most exciting feature of graphene is its ... Graphene with an exceptional combination of electronic, optical and outstanding mechanical features has been proved to lead a completely different kind of 2-D electronics. The most exciting feature of graphene is its ultra-thin thickness, that can be conformally contacted to any kind of rough surface without losing much of its transparency and conductivity. Graphene has been explored demonstrating various prototype flexible electronic applications, however, its potentiality has been proven wherever transparent conductive electrodes(TCEs) are needed in a flexible, stretchable format. Graphene-based TCEs in flexible electronic applications showed greatly superior performance over their conventionally available competitor indium tin oxide(ITO). Moreover, enormous applications have been emerging, especially in wearable devices that can be potentially used in our daily life as well as in biomedical areas. However, the production of high-quality, defect-free large area graphene is still a challenge and the main hurdle in the commercialization of flexible and wearable products. The objective of the present review paper is to summarize the progress made so far in graphene-based flexible and wearable applications. The current developments including challenges and future perspectives arc also highlighted. 展开更多
关键词 graphene flexible electronics wearable electronics transparent conductive electrode
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Resistive switching characteristics of Ni/HfO_2/Pt ReRAM 被引量:1
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作者 张晓 《Journal of Semiconductors》 EI CAS CSCD 2012年第5期80-82,共3页
This study investigated the resistive switching characteristics of the Ni/HfCVPt structure for nonvolatile memory application.The Ni/HfO_2/Pt device showed bipolar resistive switching(RS) without a forming process, ... This study investigated the resistive switching characteristics of the Ni/HfCVPt structure for nonvolatile memory application.The Ni/HfO_2/Pt device showed bipolar resistive switching(RS) without a forming process, and the formation and rupture of conducting filaments are responsible for the resistive switching phenomenon.In addition,the device showed some excellent memory performances,including a large on/off ratio(〉 3×10~5),very good data retention(〉 10~3 s @ 200℃) and uniformity of switching parameters.Considering these results,the Ni/HfO_2/Pt device has the potential for nonvolatile memory applications. 展开更多
关键词 resistive random access memory programmable metallization cell conductive filament Ni electrode HfO_2
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Regulating silver nanowire size enables efficient photoelectric conversion
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作者 Jie Xu Kai Wang +5 位作者 Yi Li Tao-Tao Zhuang Huai-Ling Gao Yang-Yi Liu Chuan-Xin He Shu-Hong Yu 《Science China Chemistry》 SCIE EI CAS CSCD 2020年第8期1046-1052,共7页
The increasing demand for the state-of-the-art transparent conductive electrodes has received great interest in synthesizing silver nanowires(AgNWs)with a uniform diameter that exhibit excellent conductance,transparen... The increasing demand for the state-of-the-art transparent conductive electrodes has received great interest in synthesizing silver nanowires(AgNWs)with a uniform diameter that exhibit excellent conductance,transparency,flexibility and mechanical ductility.Herein,we report the controllable synthesis of ultrathin AgNWs with high aspect ratio via a polyol-assisted process.The diameter of AgNWs can be continuously modulated from 20 to 80 nm by simply adjusting the aging time.The selfassembled films fabricated by using AgNWs with a diameter of 20 nm as building blocks enable an excellent performance and show a sheet resistance of^30Ω/sq and an optical transmittance of 94%.In addition,such nanowire-based conductive films can keep the excellent flexibility and resistance after bending 10,000 cycles.Similarly,the intelligent dimming films prepared by this AgNW films also have excellent flexibility and stability. 展开更多
关键词 silver nanowires polyol-assisted process assembly transparent conductive film conductive electrode
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Stretching boundaries in neurophysiological monitoring
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作者 Bo Hou Xiaogang Liu 《BMEMat(BioMedical Engineering Materials)》 2023年第4期1-3,共3页
The most prevalent among nervous system tumors significantly jeopardize patient health.For nerve integrity preservation after tumor removal,continuous intraoperative neurophysiological monitoring(CINM)is indispensable... The most prevalent among nervous system tumors significantly jeopardize patient health.For nerve integrity preservation after tumor removal,continuous intraoperative neurophysiological monitoring(CINM)is indispensable during microsurgery.The paper highlights the articles about the development of a system that employs soft and stretchable organic electronic materials for CINM.This innovative system harnesses soft and stretchable organic electronic materials and deploys conductive polymer electrodes with low impedance and modulus.These electrodes facilitate uninterrupted near-field action potential recording during surgery,resulting in enhanced signal-to-noise ratios and reduced invasiveness.Additionally,the system's multiplexing capabilities enable precise nerve localization,even in the absence of anatomical landmarks. 展开更多
关键词 conductive polymer electrodes neurophysiological monitoring organic electronic materials
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