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Elucidation of oxygen reduction reaction pathway on carbon-supported manganese oxides
Jiang, Luhua1; Tang, Qiwen1,2; Liu, Jing1,2; Sun, Gongquan1
关键词Oxygen Reduction Reaction Pathway Alkaline Electrolyte Carbon-supported Electrocatalyst Manganese Oxide
刊名CHINESE JOURNAL OF CATALYSIS
2015-02-01
DOI10.1016/S1872-2067(14)60249-7
36期:2页:175-180
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]NONNOBLE METAL-CATALYSTS ; RING-DISK ELECTRODE ; O-2 REDUCTION ; ALKALINE MEDIA ; AIR ELECTRODE ; MECHANISM ; ELECTROCATALYSTS ; ELECTROREDUCTION
英文摘要The oxygen reduction reaction (ORR) is a complex process. This is particularly the case for carbon-supported electrocatalysts in alkaline electrolytes, because carbon can catalyze the ORR via a two-electron transfer to generate hydroperoxide (HO2-), which subsequently undergoes either chemical decomposition to generate O-2 and OH- (HODR) or electrochemical reduction to OH- (HORR). In this study, we elucidated the ORR pathway on a series of carbon-supported manganese oxides, which have been extensively studied as electrocatalysts in alkaline electrolytes. A comparison of the turnover frequencies of the HODR and HORR showed that although an apparent four-electron transfer process was identified when the HO2- yield was measured using the rotating ring disk electrode technique, the real ORR pathway involved a two-electron transfer process to generate HO2-, with subsequent chemical decomposition of HO2. These results will help us to understand the intrinsic catalytic behavior of carbon-supported transition-metal oxides for the ORR in alkaline electrolytes. (C) 2015, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000349202600007
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/145967
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Jiang, Luhua,Tang, Qiwen,Liu, Jing,et al. Elucidation of oxygen reduction reaction pathway on carbon-supported manganese oxides[J]. CHINESE JOURNAL OF CATALYSIS,2015,36(2):175-180.
APA Jiang, Luhua,Tang, Qiwen,Liu, Jing,&Sun, Gongquan.(2015).Elucidation of oxygen reduction reaction pathway on carbon-supported manganese oxides.CHINESE JOURNAL OF CATALYSIS,36(2),175-180.
MLA Jiang, Luhua,et al."Elucidation of oxygen reduction reaction pathway on carbon-supported manganese oxides".CHINESE JOURNAL OF CATALYSIS 36.2(2015):175-180.
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