Nickel catalysts for hydrogen evolution from CsH2PO4

被引：14

作者：

Papandrew, Alexander B. ^{[1
]}

Zawodzinski, Thomas A., Jr. ^{[1
,2
]}

机构：

[1] Univ Tennessee, Dept Chem & Biomol Engn, Knoxville, TN 37996 USA

[2] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF POWER SOURCES | 2014年 / 245卷

基金：

美国国家科学基金会;

关键词：

Solid acids; Inorganic proton conductors; Hydrogen evolution; Non-precious catalysts; ACID-SOLUTIONS; OXIDATION;

D O I：

10.1016/j.jpowsour.2013.06.141

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：

Unsupported nickel was evaluated as an electrocatalyst material in an electrochemical hydrogen pump using the superprotonic solid acid CsH2PO4 as a proton exchange membrane. In humidified hydrogen at 250 degrees C, Ni-based electrodes display a stable proton reduction current of 207 mA cm(-2) at a -0.2 V cell potential. Electrodes utilizing carbon-supported Pt catalysts evolved hydrogen at 558 mA cm(-2) under identical conditions. Hydrogen evolution and oxidation are reversible on Pt, but hydrogen oxidation activity is virtually absent on Ni. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：171 / 174

页数：4

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