延展适用于电化学氧还原反应的旋转环盘电极的分析方法（英文）
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- 英文论文题名：Extending Analytical Methods for the ORR Evaluation Based On the Electrokinetics On a Rotating Ring-Disk Electrode
- 论文作者：Kuang-Hsu(Tim)Wu ; Da-Wei Wang ; Dang-Sheng Su
- 英文论文作者：Kuang-Hsu(Tim)Wu ; Da-Wei Wang ; Dang-Sheng Su ; Shenyang National Laboratory ; Institute of Metal Research ; Chinese Academy of Sciences ; School of Chemical Engineering ; The University of New South Wales
- 年：2016
- 作者机构：Shenyang National Laboratory,Institute of Metal Research,Chinese Academy of Sciences;School of Chemical Engineering,The University of New South Wales;
- 英文论文关键词：Electrokinetics ; oxygen reduction reaction ; analytical method ; rotating ring-disk electrode
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十九分会：电化学材料
- 语种：英文
- 分类号：O646.54
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十九分会 ; 电化学材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：147k
- 原文格式：D
- 会议级别：全国
摘要
The use of rotating ring-disk electrode(RRDE) has become a general practice for evaluating the oxygen reduction reaction(ORR) performed on electrocatalysts. In this work, we establish a series of practically useful analytical equations for important ORR parameters as a function of the ratio of disk-to-ring current densities(jD/jR), based on the fundamental electrokinetic processes on a RRDE from first-principle. Our derivation demonstrates that the conventional analytical equations presume a stepwise ORR scheme as displayed in Figure 1. From this scheme, we provide four complementary activity indices for the ORR and two analytical solutions to the reaction current density for HO_2~- generation and reduction reaction. The sensitivity of the activity indices is evaluated and a current density deconvolution method is put forward for a better-resolved Tafel analysis for the ORR. Finally, we obtain the analytical equations for the ORR regarding the chemical HO_2~- decomposition path and discuss the accuracy of simple analysis when the chemical HO_2~- decomposition is possibly involved.
The use of rotating ring-disk electrode(RRDE) has become a general practice for evaluating the oxygen reduction reaction(ORR) performed on electrocatalysts. In this work, we establish a series of practically useful analytical equations for important ORR parameters as a function of the ratio of disk-to-ring current densities(jD/jR), based on the fundamental electrokinetic processes on a RRDE from first-principle. Our derivation demonstrates that the conventional analytical equations presume a stepwise ORR scheme as displayed in Figure 1. From this scheme, we provide four complementary activity indices for the ORR and two analytical solutions to the reaction current density for HO_2~- generation and reduction reaction. The sensitivity of the activity indices is evaluated and a current density deconvolution method is put forward for a better-resolved Tafel analysis for the ORR. Finally, we obtain the analytical equations for the ORR regarding the chemical HO_2~- decomposition path and discuss the accuracy of simple analysis when the chemical HO_2~- decomposition is possibly involved.
The use of rotating ring-disk electrode(RRDE) has become a general practice for evaluating the oxygen reduction reaction(ORR) performed on electrocatalysts. In this work, we establish a series of practically useful analytical equations for important ORR parameters as a function of the ratio of disk-to-ring current densities(jD/jR), based on the fundamental electrokinetic processes on a RRDE from first-principle. Our derivation demonstrates that the conventional analytical equations presume a stepwise ORR scheme as displayed in Figure 1. From this scheme, we provide four complementary activity indices for the ORR and two analytical solutions to the reaction current density for HO_2~- generation and reduction reaction. The sensitivity of the activity indices is evaluated and a current density deconvolution method is put forward for a better-resolved Tafel analysis for the ORR. Finally, we obtain the analytical equations for the ORR regarding the chemical HO_2~- decomposition path and discuss the accuracy of simple analysis when the chemical HO_2~- decomposition is possibly involved.
引文
[1]O.Antoine,R.Durand,J Appl Electrochem 2000,30,839-844.