IrO_2氧析出催化剂在SPE电解池中的应用  

Application of IrO_2 anodic oxygen evolution catalyst in solid polymer electrolyzer

作　　者：杨国良[1] 马红超[1] 董晓丽[1] 马春[1] 张秀芳[1] 张新欣[1] 

机构地区：[1]大连工业大学轻工与化学工程学院,辽宁大连116034

出　　处：《大连工业大学学报》2016年第2期107-110,共4页Journal of Dalian Polytechnic University

基　　金：国家自然科学基金资助项目(21476033);辽宁省高等学校优秀人才支持计划项目(LR2014013)

摘　　要：通过Adams热解氧化法制备了IrO2氧析出阳极催化剂,并采用XRD、FE-SEM、循环伏安法(CV)和稳态极化曲线等方法对催化剂的理化性能进行了表征。结果表明,热处理温度越高催化剂表面活性位越少、氧析出活性越低;但热处理温度高也提高催化剂的结晶度,进而降低了催化剂的电阻。以IrO2为氧析出阳极催化剂,水电解试验显示SPE电解池槽压取决于IrO2电催化性能及其自身电阻大小。而450℃为较合适的热处理温度,此时催化剂在整个电流密度内表现出了最佳电催化性能。IrO2oxygen evolution anode catalyst were prepared by Adams＇ pyrolysis oxidation method,physicochemical properties of catalyst were characterized by XRD,FE-SEM,cyclic voltammetry（CV）and steady-state-polarization curve.The results indicated that with heat treatment temperature increasing,activity sites of catalyst on the surface decreased and oxygen precipitation activity was lower,while the catalyst crystallinity was enhanced and the resistance of catalyst was reduced.Water electrolysis experiments showed that the voltage of SPE electrolytic cell depended on electro-catalytic property of IrO2 and electrical resistance using IrO2 as oxygen evolution anode catalyst.Moreover,the most appropriate heat treatment temperature was 450 ℃,and catalyst in the current density showed the best electric catalytic performance.

关 键 词：IrO2 SPE 热解氧化法 

分 类 号：O646.542[理学—物理化学]