高等学校化学学报

高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (4): 458.

• 论文 • 上一篇    下一篇

有限圆盘电极上计时电流方程式

张祖训   

  1. 南京大学化学系, 210008
  • 收稿日期:1990-07-06 出版日期:1991-04-24 发布日期:1991-04-24
  • 基金资助:

    国家自然科学基金

The Equation for Chronoamperometric Current at Finite Disk Electrodes

Zhang Zu-xun   

  1. Department of Chemistry, Nanjing University, Nanjing, 210008
  • Received:1990-07-06 Online:1991-04-24 Published:1991-04-24

PDF (PC)

被引次数

3

摘要： 本文报道一个形式简单、结果准确、适用于任何时间的有限圆盘电极上计时电流方程式,结果为it=4nFDRT0[θ/(1+θ)]CR*,f(τ)[式中 ,τ=4DRt/r02,r0为电极半径,t为时间,0=expnF(E-E0)/RT]。

关键词: 有限圆盘电极, 计时电流方程式, 电化学

Abstract: Asimple analytical expression for the chronoamperometric current at finite disk electrodes, which is accurate at any time, is given by:it=4nFDRT0θ/(1+θ ) f(Υ)=0.7852+0.8862τ-1/2+0.2148τ1/2/(1.128+τ1/2) Where n is the number of electrons involved in the oxidation of substance R, Fthe faraday. DRis the diffusion coefficient of R, τ0 the radius of the disk electrode, CR*is the bulk concentration of substance R, t is the time and τ=4DRt/r02r0, 0=expnF(E-E0)/RT].

Key words: Finite disk electrode, Equation for chronoamperometric current, Electrochemistry

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