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Comparison of the Oxygen Reduction Reaction between NaOH and KOH Solutions on a Pt Electrode: The Electrolyte-Dependent Effect
Alternative TitleJ. Phys. Chem. B
Jin, Wei1,2; Du, Hao1; Zheng, Shili1; Xu, Hongbin1; Zhang, Yi1
2010-05-20
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY B
ISSN1520-6106
Volume114Issue:19Pages:6542-6548
AbstractThe 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.; 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.
KeywordDiffusion Coefficient Reversible Potentials Alkaline Electrolyte Activation-energies Surface-properties Superoxide Anion Molecular-oxygen Water Activation Solubility Platinum
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1021/jp102367u
URL查看原文
Indexed BySCI
Language英语
WOS KeywordDIFFUSION COEFFICIENT ; REVERSIBLE POTENTIALS ; ALKALINE ELECTROLYTE ; ACTIVATION-ENERGIES ; SURFACE-PROPERTIES ; SUPEROXIDE ANION ; MOLECULAR-OXYGEN ; WATER ACTIVATION ; SOLUBILITY ; PLATINUM
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000277499700036
Citation statistics
Cited Times:102[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6284
Collection研究所(批量导入)
Affiliation1.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
Recommended Citation
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.
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