Abstract: The theory of electrochemical processes controlled by diffusion,chemical reaction and electrode reaction occurring at ultramicroband electrodes are investigated by means of integral transformations.Multidimensional integral equations related to the E_qcirr,E_qcirr and c_rev Eq coupled with quasi-reversible charge transfer are obtained,the results we obtained as follows:For E_qCirr process:   where f(t,x) is the dimensionless electroactive species flux on electrode surface.The voltammogram can be calculated by numerical method,and the typical i-E curves are shown in this paper.

Key words: Ultramicroband electrode, Homogeneous chemical reaction, Quasi-reversible charge transfer