Acta Phys. -Chim. Sin. ›› 1993, Vol. 9 ›› Issue (01): 27-34.doi: 10.3866/PKU.WHXB19930106

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The Steady State Current With Coupled First-order Homogeneous Chemical Reactions

Liao Chuan-Ping   

  1. Department of Chemistry, Chongqing Teachers College, Chongqing 630047
  • Received:1991-08-20 Revised:1992-01-21 Published:1993-02-15
  • Contact: Liao Chuan-Ping

Abstract: In this work, reversible microdisk electrode reactions with coupled first-order homogeneous chemical reactions are discussed by means of the equivalence between the recombinated steady state diffusion equations and the Laplace transformed tran-sient diffusion equation of electrode reactions. First, general solution for transient diffusion equation of reversible microdisk electrode reactions is derived with “uni-form concentration” approach which is acceptable if D_O is close to D_R. And then, expressions for steady state current of CE, EC, EC' and ECE reactions at microdisk electrode are derived with the help of that general solution.

Key words: Microdisk electrode, Transient reversible electrode reaction, Electrode reaction with coupled homogeneous chemical reaction, Steady state electrochemical behaviour