The dynamic-state effects of sodium ion contamination on the solid polymer electrolyte water electrolysis
作者： Linsong Zhang , Xiao Jie , Zhi-Gang Shao , Xunying Wang , Baolian Yi
DOI: 10.1016/J.JPOWSOUR.2013.04.049
关键词:
摘要: Na+ is a likely intrinsic impurity in water and potential cation the solid polymer electrolyte electrolysis. In this paper, dynamic-state effect of low concentration studied by adding into deionized fed SPE electrolyser. The dynamic variation cell voltage results show that performance degraded more severely presence anode poisoning than cathode poisoning. severity rate depend on concentration, flow temperature. However, current density does not impact extent increase. meantime, an external reference electrode used to measure potentials. degradation mainly ascribed increase overpotential EIS measurements difference primarily comes from kinetics loss rather ohmic loss. decrease available protons three phase boundaries may lead charge transfer resistance. electron probe microanalysis tests remains CCM even recovered with water, which only partially performance. (C) 2013 Elsevier B.V. All rights reserved.
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