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钛基氧化物电极的分形维数和电催化性能

梁镇海;董黎君;陈新国;孙彦平

  Several Tisupported oxide anodic materials are prepared by thermal decomposition method and the anodic kinetic parameters (a,b,i0) are determined in 1 mol/L H2SO4 solution. The SEM photographs of the electrodes are scanned and saved as a BMP image file, from which a threedimensional space with graph and grey scale is obtained. Then the fractal dimension of the electrodes is calculated by using the formulaDB(F)=logNδ(F)/-logδand 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.……   
[关键词]:分形维数;电催化;钛基氧化物电极
[文献类型]:期刊
[文献出处]: 《催化学报2001年02期
[格式]:PDF原版; EPUB自适应版(需下载客户端)