THE HYDROGEN EVOLUTION REACTION ON AMORPHOUS NICKEL AND COBALT ALLOYS

被引：41

作者：

GIZ, MJ ^{[1
]}

TREMILIOSI-FILHO, G ^{[1
]}

GONZALEZ, ER ^{[1
]}

SRINIVASAN, S ^{[1
]}

APPLEBY, AJ ^{[1
]}

机构：

[1] TEXAS A&M UNIV, CTR ELECTROCHEM SYST & HYDROGEN RES, ENGN RES CTR, COLLEGE STN, TX 77843 USA

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 1995年 / 20卷 / 06期

基金：

巴西圣保罗研究基金会; 美国国家科学基金会;

关键词：

D O I：

10.1016/0360-3199(94)00068-B

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：

The mechanism of the hydrogen evolution reaction (HER) on Ni70P30, Co72P28, Ni40Co23P37 and Ni72Fe1P27 was studied by impedance spectroscopy and steady-state polarization measurements. Only the Ni-Fe-P presents a good electrocatalytic activity with an overpotential approximate to 200 mV lower than that for mild steel or Ni (the traditional materials used as cathodes in water electrolysers). Impedance studies of the HER were carried out on these amorphous alloys and it was concluded that Ni-Fe-P is the only material to present a Volmer-Heyrovsky mechanism with the Heyrovsky step being the r.d.s. In contrast, on Co-P, Ni-P and Ni-Co-P the mechanism is Volmer-Tafel with the Volmer step being the r.d.s. From the rate constants the following catalytic sequence was determined: Ni-Fe-P > Co-P > Ni-Co-P > Ni-P.

引用

页码：423 / 427

页数：5

共 2 条

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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 1990, 15 (08) :551-555

[2] TRANSITION METAL-BASED CATHODES FOR HYDROGEN EVOLUTION IN ALKALINE-SOLUTION - ELECTROCATALYSIS ON NICKEL-BASED TERNARY ELECTROLYTIC CODEPOSITS [J].

RAJ, IA ;

VASU, KI .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 1992, 22 (05) :471-477

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