摘要
为制备高性能析氧电极,采用热分解法在400℃温度下制备Ti/RuO2(x)-Co3O4(1-x)(0≤x≤1,x为Ru的摩尔分数)复合氧化物电极,通过电极开路电压、循环伏安曲线及极化曲线等分析其在1.0mol/LKOH溶液中的析氧催化活性及析氧动力学.结果表明,摩尔分数为10%的RuO2使电极催化活性急剧变化,摩尔分数为50%的RuO2复合氧化物电极具有最大的伏安电荷(429.63mC.cm-2)、最高的表面粗糙度(1786),其析氧性能最佳;Ti/Co3O4在高、低过电位区域电极对OH-的反应级数分别近似为1.0和2.0,含RuO2电极反应级数均为1.0.
Ti-supported RuO2(x)-Co3O4(1-x) (0≤x≤1.0) electrodes were prepared by thermal decomposition at 400 ℃. Electrocatalytic activity in 1.0 mol·dm-3 KOH solution was studied recording open-potential,cyclic voltammetry and polarisation curve. The results showed that 10 mol% RuO2 could dramatically change catalytic activity. Catalytic performance of the mixed oxide electrodes containing 50 mol% RuO2 was the best,with the greatest Volta metric charge,429.63 mC·cm-2,and the highest morphology factor (1 786.37). The reaction order of Ti/Co3O4 with respect to [OH-] at low and high over potential are 2.0 and 1.0 respectively,and the electrodes containing RuO2 are both 1.0.
出处
《大庆石油学院学报》
CAS
北大核心
2009年第6期81-86,共6页
Journal of Daqing Petroleum Institute
基金
国家自然科学基金项目(50476091)
黑龙江省自然科学基金项目(B200401)
