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.
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