An effective oxygen electrode based on Ir0.6Sn0.4O2 for PEM water electrolyzers
By Jiang, Guang; Yu, Hongmei; Hao, Jinkai; Chi, Jun; Fan, Zhixuan; Yao, Dewei; Qin, Bowen; Shao, Zhigang
Published in Journal of Energy Chemistry
2019
Abstract
An effective oxygen evolution electrode with Ir0.6Sn0.4O2 was designed for proton exchange membrane (PEM) water electrolyzers. The anode catalyst layer exhibits a jagged structure with smaller particles and pores, which provide more active sites and mass transportation channels. The prepared IrSn electrode showed a cell voltage of 1.96 V at 2.0 A cm−2 with Ir loading as low as 0.294 mg cm−2. Furthermore, IrSn electrode with different anode catalyst loadings was investigated. The IrSn electrode indicates higher mass current and more stable cell voltage than the commercial Ir Black electrode at low loading.