催化学报
催化學報
최화학보
CHINESE JOURNAL OF CATALYSIS
2001年
2期
148-150
,共3页
梁镇海%董黎君%陈新国%孙彦平
樑鎮海%董黎君%陳新國%孫彥平
량진해%동려군%진신국%손언평
分形维数%电催化%钛基氧化物电极
分形維數%電催化%鈦基氧化物電極
분형유수%전최화%태기양화물전겁
Several Ti-supported oxide anodic materials are prepared bythermal decompositi on method and the anodic kinetic parameters (a,b,i0) are determined in 1m ol/L H2SO4 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 g rey scale is obtained. Then the fractal dimension of the electrodes is calculated by using the formula DB(F)=logNδ(F)/-logδ and acalc ulation 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 activityis.
