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An Extension to the Analytical Evaluation of the Oxygen Reduction Reaction Based On the Electrokinetics On a Rotating Ring-Disk Electrode
Wu, Kuang-Hsu; Wang, Da-Wei; Su, Dang-Sheng; Su, DS (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
2016-04-01
Source PublicationCHEMELECTROCHEM
ISSN2196-0216
Volume3Issue:4Pages:622-628
AbstractThe use of rotating ring-disk electrodes has become a general practice for evaluating the activity of the oxygen reduction reaction (ORR) performed with electrocatalysts. This technique typically employs simple equations based on the charge/mass balance to calculate the average number of electrons transferred and the percentage of peroxide production. However, the underlying mechanistic assumptions of this analysis and the uncertainty involved when considering the catalytic decomposition of HO2- have not been well elucidated. This work demonstrates through electrokinetic derivations that the conventional formalism presumes a stepwise ORR pathway and four reaction parameters in total are provided for indexing ORR activity. Furthermore, we provide a method of current density deconvolution to separate the individual reaction components and exemplify its use for Tafel analysis. Finally, we provide analytical solutions to the reaction parameters for the ORR when heterogeneous HO2- decomposition is involved.
description.department[wu, kuang-hsu ; su, dang-sheng] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [wang, da-wei] univ new s wales, sch chem engn, sydney, nsw 2052, australia
KeywordAnalytical Methods Kinetics Oxygen Reduction Reaction Rotating Ring-disk Electrode Theoretical Chemistry
Subject AreaElectrochemistry
Funding OrganizationShenyang National Laboratory, Institute of Metal Research, Chinese Academy of Sciences; Chinese Academy of Sciences [2015TW1GB0001]; Australian Endeavour Research Fellowship - Australian Government
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75919
Collection中国科学院金属研究所
Corresponding AuthorSu, DS (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Wu, Kuang-Hsu,Wang, Da-Wei,Su, Dang-Sheng,et al. An Extension to the Analytical Evaluation of the Oxygen Reduction Reaction Based On the Electrokinetics On a Rotating Ring-Disk Electrode[J]. CHEMELECTROCHEM,2016,3(4):622-628.
APA Wu, Kuang-Hsu,Wang, Da-Wei,Su, Dang-Sheng,&Su, DS .(2016).An Extension to the Analytical Evaluation of the Oxygen Reduction Reaction Based On the Electrokinetics On a Rotating Ring-Disk Electrode.CHEMELECTROCHEM,3(4),622-628.
MLA Wu, Kuang-Hsu,et al."An Extension to the Analytical Evaluation of the Oxygen Reduction Reaction Based On the Electrokinetics On a Rotating Ring-Disk Electrode".CHEMELECTROCHEM 3.4(2016):622-628.
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