CLOSED-FORM APPROXIMATE EXPRESSIONS FOR THE ELECTROCHEMICAL RESPONSE OF MICROELECTRODES IN THE ZERO-RANGE LIMIT

被引:7
作者
BRODSKY, AM
BURLATSKY, SF
REINHARDT, WP
机构
[1] MOSCOW CHEM PHYS INST,MOSCOW,RUSSIA
[2] UNIV WASHINGTON,CPAC,SEATTLE,WA 98195
来源
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1993年 / 358卷 / 1-2期
关键词
D O I
10.1016/0022-0728(93)80427-J
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
We show that the electrochemical response of one or more microelectrodes can be described, in the limit of small size, by closed-form solutions of diffusion-kinetic equations, which, under appropriate and well-defined conditions, should give a good approximation to the actual response. The predictions of the analytical solutions for the diffusion-kinetic model are compared with microelectrode array experiments of Bard et al. and show excellent agreement. The analytical results make clear the various scaling properties of the solution, as a function of electrode size and spacings, as well as indicating the range of validity of the diffusion-kinetic model itself.
引用
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页码:1 / 20
页数:20
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