NaCl-KCl熔体中的氧化物电极
来源期刊:中南大学学报(自然科学版)1988年第4期
论文作者:李江帆 吴良蕙 袁炳年
文章页码:475 - 480
关键词:熔盐电解; 氯化物电解; 电催化; 不溶性阳极; 氧化物; 阳极氧化; 氧化钌/氧发化物阳极
Key words:fused-salt electrolysis; insoluble anodes; oxide; anodic oxidation; electrolysis of chlorides; electro-catalysis; ruthenium oxide/oxide anodes
摘 要:本文研究了等摩尔NaCl-KCl熔盐体系中各种氧化物电极对Cl2析出的电催化活性。用热分解方法制取的石墨基RuO2和RuO2+TiO2电极其电催化作用明显,它们的交换电流密度分别为0.61,0.77A/cm2,比石墨电极活性大的原因是由于惰性电极具有较大的电极粗糙度,RuO2电极的双电层电容高达0.38F/cm2。
Abstract: The electrocatalytic activity of chlorine evolution reaction on metal oxide electrodes in NaCl-KCl melt(mole ratio 1∶1)at 700℃ has been investigated.Oxide electrodes are prepared on gra-phite substrates by thermal decomposition method.RuO2 and TiO2+RuO2 have high electroca-talytic activity and their exchange current density is 0.61 and 0.77A/cm2 respectively.The high ele-ctrocatalytic activity of oxide electrodes is ascribed to the high surface roughness of anodes.Thedouble layer capacity of RuO2 anode is 0.38 F/cm2.