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Comparison of the Oxygen Reduction Reaction between NaOH and KOH Solutions on a Pt Electrode: The Electrolyte-Dependent Effect

文献类型:期刊论文

作者Jin, Wei1,2; Du, Hao1; Zheng, Shili1; Xu, Hongbin1; Zhang, Yi1
刊名JOURNAL OF PHYSICAL CHEMISTRY B
出版日期2010-05-20
卷号114期号:19页码:6542-6548
关键词diffusion coefficient reversible potentials alkaline electrolyte activation-energies surface-properties superoxide anion molecular-oxygen water activation solubility platinum
ISSN号1520-6106
其他题名J. Phys. Chem. B
中文摘要The oxygen reduction reaction (ORR) on a polycrystalline Pt surface was studied using cyclic voltammetry techniques, and the influence of reaction media on the ORR is examined by comparing the ORR in NaOH and KOH solutions with concentration ranging from 0.5 to 14 M at 298 K. The results show that, in NaOH and KOH solutions, the ORR, a quasi-reversible diffusion-controlled reaction, is largely dependent on the electrolyte conditions, and KOH solutions are superior to NaOH solutions for the ORR process in both thermodynamic and kinetic consideration. As the alkaline concentration increases, the ORR performance frustrates, and the protonation of superoxide is suppressed; thus, the ORR shifts from a 2e reduction pathway to a le reduction pathway in both solutions.
英文摘要The oxygen reduction reaction (ORR) on a polycrystalline Pt surface was studied using cyclic voltammetry techniques, and the influence of reaction media on the ORR is examined by comparing the ORR in NaOH and KOH solutions with concentration ranging from 0.5 to 14 M at 298 K. The results show that, in NaOH and KOH solutions, the ORR, a quasi-reversible diffusion-controlled reaction, is largely dependent on the electrolyte conditions, and KOH solutions are superior to NaOH solutions for the ORR process in both thermodynamic and kinetic consideration. As the alkaline concentration increases, the ORR performance frustrates, and the protonation of superoxide is suppressed; thus, the ORR shifts from a 2e reduction pathway to a le reduction pathway in both solutions.
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]DIFFUSION COEFFICIENT ; REVERSIBLE POTENTIALS ; ALKALINE ELECTROLYTE ; ACTIVATION-ENERGIES ; SURFACE-PROPERTIES ; SUPEROXIDE ANION ; MOLECULAR-OXYGEN ; WATER ACTIVATION ; SOLUBILITY ; PLATINUM
收录类别SCI
原文出处://WOS:000277499700036
语种英语
WOS记录号WOS:000277499700036
公开日期2013-11-28
版本出版稿
源URL[http://ir.ipe.ac.cn/handle/122111/6284]  
专题过程工程研究所_研究所(批量导入)
作者单位1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Jin, Wei,Du, Hao,Zheng, Shili,et al. Comparison of the Oxygen Reduction Reaction between NaOH and KOH Solutions on a Pt Electrode: The Electrolyte-Dependent Effect[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2010,114(19):6542-6548.
APA Jin, Wei,Du, Hao,Zheng, Shili,Xu, Hongbin,&Zhang, Yi.(2010).Comparison of the Oxygen Reduction Reaction between NaOH and KOH Solutions on a Pt Electrode: The Electrolyte-Dependent Effect.JOURNAL OF PHYSICAL CHEMISTRY B,114(19),6542-6548.
MLA Jin, Wei,et al."Comparison of the Oxygen Reduction Reaction between NaOH and KOH Solutions on a Pt Electrode: The Electrolyte-Dependent Effect".JOURNAL OF PHYSICAL CHEMISTRY B 114.19(2010):6542-6548.

入库方式: OAI收割

来源:过程工程研究所

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