Several Ti supported oxide anodic materials are prepared by thermal decomposition method and the anodic kinetic parameters ( a,b,i 0) are determined in 1 mol/L H 2SO 4 solution. The SEM photographs of the electrodes are scanned and saved as a BMP image file, from which a three dimensional space with graph and grey scale is obtained. Then the fractal dimension of the electrodes is calculated by using the formula D B( F ) =log N δ(F )/-log δ and a calculation program. The electrocatalytic performance of the electrodes is discussed combining with the fractal dimension and kinetic parameters. The influences of the electrode composition on the kinetic parameters are also discussed according to the dual barrier model and mechanism of the oxygen evolution at oxide anodes. The results show that the larger fractal dimension of the electrodes is, the better electrocatalytic activity is.
