An insight into the effects of B-site transition metals on the activity, activation effect and stability of perovskite oxygen electrodes for solid oxide electrolysis cells
Bi, JX; Yang, SB; Zhong, SH; Wang, JQ; Fan, C; Chen, XB; Liu, YH
2017
发表期刊JOURNAL OF POWER SOURCES
ISSN0378-7753
卷号363期号:-页码:470-479
文章类型期刊论文
摘要Here, effects of B-site transition metals (TMs) in the (La0.6Sr0.4)XO3-delta (X = Mn, Fe, Co) perovskite structure on the activity and stability of the oxygen electrodes during high temperature electrolysis are discussed to provide a deep understanding of the phenomena observed for different oxygen electrodes under anodic polarizations. Performance and stability of the electrodes vary significantly at 800 degrees C as the TMs changed from Mn to Fe and Co, which is attributed to the different ionic conductivities and surface chemistry of the materials that have a strong dependence on the valence state and electronic structure of TMs. Under an anodic current passage of 200 mA cm(-2) at 800 degrees C, electrode polarization resistance (R-E) and overpotential (eta) of the (La0.6Sr0.4)MnO3-delta (LSM) electrode decrease significantly by 1.75 Omega cm(2) and 101 mV during the 1200 min test, compared with the constant values of R-E and eta for the (La0.6Sr0.4)FeO3-delta (LSF) and (La0.6Sr0.4)CoO3-delta (LSC) and electrodes, an indication of the influence of B-site TMs on the electrode performance and stability. Most serious degradation is observed at the (La0.6Sr0.4)MnO3-delta electrode due to the electrode detachment arising from the accelerated SrO surface segregation and related disintegration of LSM particles near the electrode electrolyte interface. (C) 2017 Elsevier B.V. All rights reserved.
关键词Sr-doped Lamno3 Fuel-cells Chromium Deposition Hydrogen-production O-2 Reduction Electrical-properties Quantum-mechanics Thermal-expansion Cathode Materials Crystal-structure
DOI10.1016/j.jpowsour.2017.07.118
关键词[WOS]SR-DOPED LAMNO3 ; FUEL-CELLS ; CHROMIUM DEPOSITION ; HYDROGEN-PRODUCTION ; O-2 REDUCTION ; ELECTRICAL-PROPERTIES ; QUANTUM-MECHANICS ; THERMAL-EXPANSION ; CATHODE MATERIALS ; CRYSTAL-STRUCTURE
收录类别SCI
语种英语
WOS记录号WOS:000411544300054
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28555
专题中科院上海应用物理研究所2011-2018年
推荐引用方式
GB/T 7714
Bi, JX,Yang, SB,Zhong, SH,et al. An insight into the effects of B-site transition metals on the activity, activation effect and stability of perovskite oxygen electrodes for solid oxide electrolysis cells[J]. JOURNAL OF POWER SOURCES,2017,363(-):470-479.
APA Bi, JX.,Yang, SB.,Zhong, SH.,Wang, JQ.,Fan, C.,...&Liu, YH.(2017).An insight into the effects of B-site transition metals on the activity, activation effect and stability of perovskite oxygen electrodes for solid oxide electrolysis cells.JOURNAL OF POWER SOURCES,363(-),470-479.
MLA Bi, JX,et al."An insight into the effects of B-site transition metals on the activity, activation effect and stability of perovskite oxygen electrodes for solid oxide electrolysis cells".JOURNAL OF POWER SOURCES 363.-(2017):470-479.
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