CAJ | 학술논문

为制备高性能析氧电极,采用热分解法在400 ℃温度下制备Ti/RuO_2(x)-Co_3O_4(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1.0 mol/L KOH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RuO_2使电极催化活性急剧变化,摩尔分数为50%的RuO_2复合氧化物电极具有最大的伏安电荷(429.63 mC·cm~(-2))、最高的表面粗糙度(1 786),其析氧性能最佳;Ti/Co_3O_4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RuO_2电极反应级数均为1.0.
위제비고성능석양전겁,채용열분해법재400 ℃온도하제비Ti/RuO_2(x)-Co_3O_4(1-x) (0≤x≤1,x위Ru적마이분수)복합양화물전겁,통과전겁개로전압、순배복안곡선급겁화곡선등분석기재1.0 mol/L KOH용액중적석양최화활성급석양동역학.결과표명,마이분수위10%적RuO_2사전겁최화활성급극변화,마이분수위50%적RuO_2복합양화물전겁구유최대적복안전하(429.63 mC·cm~(-2))、최고적표면조조도(1 786),기석양성능최가;Ti/Co_3O_4재고、저과전위구역전겁대OH~-적반응급수분별근사위1.0화2.0,함RuO_2전겁반응급수균위1.0.
Ti-supported RuO_2(x)-Co_3O_4(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% RuO_2 could dramatically change catalytic activity. Catalytic performance of the mixed oxide electrodes containing 50 mol% RuO_2 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/Co_3O_4 with respect to [OH-] at low and high over potential are 2.0 and 1.0 respectively, and the electrodes containing RuO_2 are both 1.0.