Theoretical investigation on cyclic reciprocal derivative chronopotentiometry Kinetic study of totally irreversible electrode processes

被引：5
|
作者：
Chen, Luhong
Wang, Zhan
Chen, Jian
Bi, Shuping [1 ]
机构：
[1] Nanjing Univ, Sch Chem & Chem Engn, State Key Lab Coordinat Chem China, Nanjing 210093, Peoples R China
[2] Nanjing Univ, MOE Key Lab Life Sci, Nanjing 210093, Peoples R China
[3] Nanjing Univ, Dept Math, Nanjing 210093, Peoples R China
[4] Nanjing Univ, Computat & Network Informat Ctr, Nanjing 210093, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2007年 / 52卷 / 28期
基金：
中国国家自然科学基金;
关键词：
cyclic reciprocal derivative chronopotentiometry; totally irreversible electrode process; kinetic parameter; reversibility;
D O I：
10.1016/j.electacta.2007.06.071
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Theoretical expressions and mathematical analysis in cyclic reciprocal derivative chronopotentiometry (CRDCP) are presented for totally irreversible electrode processes corresponding to the application of symmetrical and unsymmetrical programmed currents. For two successive unsymmetrical programmed currents, the effect of the currents ratio b (b= vertical bar I-2(t)/I-1(t)vertical bar) on the (dt/dE)-Ecurves is discussed. The electrochemical behavior of totally irreversible electrode processes has been studied corresponding to the application of the unique unsymmetrical programmed phi(m)(I-0) proposed recently. CRDCP characteristic parameters obtained for totally irreversible electrode processes are different from those of reversible electrode processes. Therefore, a comparison of CRDCP between both mechanisms is presented. Based on the mathematical derivation, alternative methods for kinetic measuring are described. It is prospected that CRDCP is convenient and applicable for studying the reversibility of the electrode processes in form of CRDCP characteristic parameters. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：8020 / 8030
页数：11
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