Cyclic reciprocal derivative chronopotentiometric behavior of electrode process in the presence of adsorptive reactants A theoretical study of the electrolysis sequence of adsorptive and diffusing electroactive reactants

被引：3

作者：

Chen, Luhong ^{[1
,2
]}

Guo, Wei ^{[3
]}

Xuan, Zhe ^{[1
,2
]}

Bi, Shuping ^{[1
,2
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, State Key Lab Coordinat Chem, 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

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 28期

基金：

中国国家自然科学基金;

关键词：

Cyclic reciprocal derivative; chronopotentiometry; Adsorption; Diffusion; Electrolysis sequence; Transition time; SLOW CHARGE-TRANSFER; PROGRAMMED CURRENTS; LINEAR ADSORPTION; TIME CURRENTS; LAYER; POLAROGRAPHY; VOLTAMMETRY; THICKNESS; KINETICS; PRODUCT;

D O I：

10.1016/j.electacta.2010.08.009

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Theoretical modeling and analyzing of electrode process in the presence of adsorptive reactants is presented using cyclic reciprocal derivative chronopotentiometry (CRDCP) with symmetrical programmed current applied Electrode process proposed based on the assumption of the electrolysis sequence of diffusion and adsorbed electroactive species is described as on first off last" and denoted as Onfol model The numerical simulated (dt/dE)-E waves obtained nom the analytical potential-time expressions of the Onfol model present peaks during both diffusion processes and adsorption processes Influences of maximum surface excess adsorbed monolayer thickness adsorption coefficient and current steps on CRDCP characteristic parameters are discussed CRDCP behavior allows us to distinguish the form of the electroactive species contributing to the system current and electrolysis sequence can therefore be determined (C) 2010 Elsevier Ltd All rights reserved

引用

页码：9051 / 9059

页数：9