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Infiltration of Ce0.8Gd0.2O1.9 nanoparticles on Sr2Fe1.5Mo0.5O6-δ cathode for CO2 electroreduction in solid oxide electrolysis cell 被引量:6
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作者 Houfu Lv Yingjie Zhou +4 位作者 Xiaomin Zhang Yuefeng Song qingxue liu Guoxiong Wang Xinhe Bao 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2019年第8期71-78,I0004,共9页
Solid oxide electrolysis cell(SOEC) can electrochemically convert CO2 to CO at the gas-solid interface with a high current density and Faradaic efficiency, which has attracted increasing attentions in recent years.Exp... Solid oxide electrolysis cell(SOEC) can electrochemically convert CO2 to CO at the gas-solid interface with a high current density and Faradaic efficiency, which has attracted increasing attentions in recent years.Exploring efficient catalyst for electrochemical CO2 reduction reaction(CO2 RR) at the cathode is a grand challenge for the research and development of SOEC. Sr2Fe1.5Mo0.5O6-δ(SFM) is one kind of promising cathode materials for SOEC, but suffers from insufficient activity for CO2 RR. Herein, Gd0.2Ce0.8O1.9(GDC)nanoparticles were infiltrated onto the SFM surface to construct a composite GDC-SFM cathode and improve the CO2 RR performance in SOEC. The current density over the GDC infiltrated SFM cathode with a GDC loading of 12.8 wt% reaches 0.446 A cm-2 at 1.6 V and 800 °C, which is much higher than that over the SFM cathode(0.283 A cm-2). Temperature-programmed desorption of CO2 measurements suggest that the infiltration of GDC nanoparticles significantly increases the density of surface active sites and three phase boundaries(TPBs), which are beneficial for CO2 adsorption and subsequent conversion. Electrochemical impedance spectroscopy results indicate that the polarization resistance of 12.8 wt% GDCSFM cathode was obviously decreased from 0.46 to 0.30 cm^2 after the infiltration of GDC nanoparticles. 展开更多
关键词 Electrochemical carbon dioxide reduction reaction Solid oxide ELECTROLYSIS cell Double PEROVSKITE INFILTRATION
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Improving the performance of solid oxide electrolysis cell with gold nanoparticles-modified LSM-YSZ anode 被引量:5
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作者 Yuefeng Song Xiaomin Zhang +5 位作者 Yingjie Zhou Houfu Lv qingxue liu Weicheng Feng Guoxiong Wang Xinhe Bao 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2019年第8期181-187,I0007,共8页
Gold, as the common current collector in solid oxide electrolysis cell(SOEC), is traditionally considered to be inert for oxygen evolution reaction at the anode of SOEC. Herein, gold nanoparticles were loaded onto con... Gold, as the common current collector in solid oxide electrolysis cell(SOEC), is traditionally considered to be inert for oxygen evolution reaction at the anode of SOEC. Herein, gold nanoparticles were loaded onto conventional strontium doped lanthanum manganite-yttria stabilized zirconia(LSM-YSZ) anode, which evidently improved the performance of oxygen evolution reaction at 800 °C. The current densities at 1.2 V and 1.4 V increased by 60.0% and 46.9%, respectively, after loading gold nanoparticles onto the LSM-YSZ anode. Physicochemical characterizations and electrochemical measurements suggested that the improved SOEC performance was attributed to the accelerated electron transfer of elementary process in anodic polarization reaction and the newly generated triple phase boundaries in gold nanoparticles-loaded LSMYSZ anode. 展开更多
关键词 Solid oxide ELECTROLYSIS cell Oxygen evolution reaction Gold nanoparticles CO2 ELECTROLYSIS STRONTIUM doped LANTHANUM manganite-yttria stabilized zirconia
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Highly dispersed nickel species on iron‐based perovskite for CO_(2) electrolysis in solid oxide electrolysis cell 被引量:1
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作者 Yingjie Zhou Tianfu liu +5 位作者 Yuefeng Song Houfu Lv qingxue liu Na Ta Xiaomin Zhang Guoxiong Wang 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2022年第7期1710-1718,共9页
Feasible construction of cathode materials with highly dispersed active sites can extend the tri‐ple‐phase boundaries,and therefore leading to enhanced electrode kinetics for CO_(2) electrolysis in solid oxide elect... Feasible construction of cathode materials with highly dispersed active sites can extend the tri‐ple‐phase boundaries,and therefore leading to enhanced electrode kinetics for CO_(2) electrolysis in solid oxide electrolysis cell(SOEC).Herein,highly dispersed nickel species with low loading(1.0 wt%)were trapped within the La_(0.8)Sr_(0.2)FeO_(3)–δ‐Ce_(0.8)Sm_(0.2)O_(2)–δvia a facial mechanical milling ap‐proach,which demonstrated excellent CO_(2) electrolysis performance.The highly dispersed nickel species can significantly alter the electronic structures of the LSF‐SDC without affecting its porous network and facilitate oxygen vacancy formation,thus greatly promote the CO_(2) electrolysis perfor‐mance.The highest current density of 1.53 A·cm^(-2) could be achieved when operated under 800℃ at 1.6 V,which is about 91%higher than the LSF‐SDC counterpart. 展开更多
关键词 CO_(2)electrolysis Solid oxide electrolysis cells Perovskite oxide Nickel species
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Photodegradation mechanism of deltamethrin and fenvalerate 被引量:8
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作者 Pengyan liu Yujie liu +1 位作者 qingxue liu Jinwei liu 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2010年第7期1123-1128,共6页
To understand the degradation and environmental fate of pyrethroids, the process of their photodegradation under simulated natural conditions was investigated. The results showed that the degradation process follows f... To understand the degradation and environmental fate of pyrethroids, the process of their photodegradation under simulated natural conditions was investigated. The results showed that the degradation process follows first-order kinetics. The degradation intermediates were identified with gas chromatography-mass spectrometry. A plausible mechanism was discussed to explain the process. Several influences on degradation process were investigated and reported such as the effects of initial concentration of pyrethroids, total time of light irradiation, solvents, and light source, as well as the effect of a few substances that exist in the environment. This study could be a good reference for the degradation of pyrethroids in practical circumstances. 展开更多
关键词 PYRETHROIDS DELTAMETHRIN FENVALERATE PHOTODEGRADATION
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Recent advances for the production of hydrocarbon biofuel via deoxygenation progress 被引量:2
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作者 Dan Li Hui Xin +3 位作者 Xiangzhe Du Xiaolei Hao qingxue liu Changwei Hu 《Science Bulletin》 SCIE EI CAS CSCD 2015年第24期2096-2106,共11页
The current world energy crisis and increasing environmental concerns over global climate change from combusting fossil fuel are driving researchers into a new route to produce fuels via sustainable resource to meet t... The current world energy crisis and increasing environmental concerns over global climate change from combusting fossil fuel are driving researchers into a new route to produce fuels via sustainable resource to meet the demands of human. In recent years, deoxygenation as an alternative method has been applied in the production of hydrocarbon fuels, particularly via the deoxygenation of fatty acids and triglycerides from seed oils and fats, producing hydrocarbon fuels entirely fungible with fossil fuels. The deoxygenation of biobased feedstock to fuel-like hydrocarbons is critically reviewed in this article. The review mainly discusses the use of feedstock, innovation of catalysts, and the reaction mechanism involved in the production of hydrocarbon fuels via deoxygenation progress. 展开更多
关键词 Deoxygenation Biobased feedstock -Hydrocarbon fuels Deoxygenation mechanism
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In-situ exsolution of cobalt nanoparticles from La_(0.5)Sr_(0.5)Fe_(0.8)Co_(0.2)O_(3-δ) cathode for enhanced CO_(2) electrolysis performance 被引量:1
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作者 Jingwei Li qingxue liu +6 位作者 Yuefeng Song Houfu Lv Weicheng Feng Yuxiang Shen Chengzhi Guan Xiaomin Zhang Guoxiong Wang 《Green Chemical Engineering》 2022年第3期250-258,共9页
Solid oxide electrolysis cell(SOEC)is a promising technology for CO_(2) conversion and renewable energy storage with high efficiency.It is highly desirable to develop catalytically active cathodes for CO_(2) electroly... Solid oxide electrolysis cell(SOEC)is a promising technology for CO_(2) conversion and renewable energy storage with high efficiency.It is highly desirable to develop catalytically active cathodes for CO_(2) electrolysis.Herein,cathode materials with different structural stabilities are designed by Nb substitution on La_(0.5)Sr_(0.5)Fe_(0.8)Co_(0.2)O_(3-δ)(LSFC82)to obtain La_(0.5)Sr_(0.5)Fe_(0.7)Co_(0.2)Nb_(0.1)O_(3-δ)(LSFCN721)and La_(0.5)Sr_(0.5)Fe_(0.8)Co_(0.1)Nb_(0.1)O_(3-δ)(LSFCN811),respectively.LSFC82-Sm_(0.2)Ce_(0.8)O_(2-δ)(SDC)cathode with inferior structural stability(ability to maintain the structure)shows desirable CO_(2) electrolysis performance with the generated current density of 1.80 A cm^(-2)2 at 1.6 V and stable performance during 110 h operation at 1.2 V and 800℃.However,LSFC82 particles are collapsed into pieces after stability test with the generation of Co nanoparticles simultaneously.The frameworks of LSFCN721 and LSFCN811 particles maintain well because of the high-valent niobium,but Co exsolution,ox-ygen vacancy content and the corresponding CO_(2) electrolysis performance are restricted.This work confirms that Co nanoparticles can be exsolved from LSFC82-SDC cathode during CO_(2) electrolysis,providing references for constructing metallic nanoparticles decorated-perovskite cathodes for SOECs. 展开更多
关键词 Solid oxide electrolysis cell CO_(2)electrolysis PEROVSKITE Cobalt nanoparticles EXSOLUTION
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Erratum to: Recent advances for the production of hydrocarbon biofuel via deoxygenation progress 被引量:1
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作者 Dan Li Hui Xin +3 位作者 Xiangzhe Du Xiaolei Hao qingxue liu Changwei Hu 《Science Bulletin》 SCIE EI CAS CSCD 2016年第3期263-263,共1页
1 Erratum to:Sci.Bull.(2015)60(24):2096–2106DOI 10.1007/s11434-015-0971-0In the original publication of this paper,the pathways proposed for the deoxygenation of a fatty acid ester into hydrocarbons in Scheme 2 was i... 1 Erratum to:Sci.Bull.(2015)60(24):2096–2106DOI 10.1007/s11434-015-0971-0In the original publication of this paper,the pathways proposed for the deoxygenation of a fatty acid ester into hydrocarbons in Scheme 2 was incorrect.The corrected pathways appear in this erratum(Scheme 2). 展开更多
关键词 Erratum to
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