In situ cathode polarization measurement in alkaline anion exchange membrane water electrolyzer equipped with a PdNiFeCo/C-Ceria hydrogen evolution electrocatalyst

被引:14
|
作者
Zhiani, Mohammad [1 ]
Jalili, Fariba [1 ]
Kamali, Saeedeh [1 ]
机构
[1] Isfahan Univ Technol, Dept Chem, Esfahan 841568311, Iran
关键词
Hydrogen evolution reaction; Anion exchange membrane electrolyzer; Ni foam; Metal nanoparticles; NICKEL FOAM; OXYGEN EVOLUTION; GRAPHENE OXIDE; EFFICIENT ROUTE; NI; ELECTRODES; FABRICATION; COMPOSITE; CATALYST; COATINGS;
D O I
10.1016/j.ijhydene.2017.09.038
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Ni foam was modified by a catalyst with low content of Pd, Ni, Fe and Co metal nano particles (PdNiFeCo/C-Ceria-NF) and evaluated as the cathode in alkaline anion exchange membrane (AAEM) water electrolyzer. The electrochemical activity of the electrode in hydrogen evolution reaction (HER) was investigated using cyclic voltammetry (CV) and Linear Sweep Voltammetry (LSV) techniques. The performance of catalyst as the cathode was investigated in an AAEM electrolyzer single cell by separating of the anode and cathode polarizations. PdNiFeCo/C-Ceria-NF exhibited a high catalytic activity toward HER and AAEM cathode reaction. PdNiFeCo/C-Ceria-NF showed a low Tafel slope (-79 mV dec(-1)), and low overpotential at the current density of 10 mA cm(-2) (-14 mV) in HER. Also, PdNiFeCo/C-Ceria-NF electrode showed an excellent stability performance in alkaline media during 30 h. The membrane electrode assembly (MEA) which was equipped with PdNiFeCo/C-Ceria-NF exhibited the cell voltage of 2.31 V compared to 2.22 V for Pt/C on Ni foam (Pt/C-NF) at the current density of 300 mA cm(-2). (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:26563 / 26574
页数:12
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