Abstract: Based on the investigation of coulometric conversion efficiency of porous carbon felt electrode, a mathematical model for calculating the mass transfer coefficient of porous carbon felt electrode was developed.By using this mathematical model, a simplicial nonlinear fitting method for calculating the mass transfer coefficient of porous carbon felt electrode was proposed, and the process of nonlinear fitting was simulated by a computer.The program written in BASICcould be implemented on a IBMpersonal computer.The results obtained were very closed to the value in literature and the results of graphic method.

Key words: Porous carbon felt electrode, Mass transfer coefficient, Nonlinear fitting