MECHANISTIC STUDY OF THE HYDROGEN EVOLUTION REACTION ON NI-ZN AND NI-S CATHODES

被引：21

作者：

GIZ, MJ

FERREIRA, M

TREMILIOSI-FILHO, G

GONZALEZ, ER

机构：

[1] Departamento de Físico-Química, IFQSC/USP, Sâo Carlos, SP 13560

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 1993年 / 23卷 / 06期

关键词：

D O I：

10.1007/BF00721956

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Electrodeposited Ni-Zn and Ni-S on a mild steel substrate have shown very good performance as cathode materials for the HER in alkaline media. The materials were studied previously with surface techniques and evaluated through current-potential curves and long term operation. This paper describes a detailed mechanistic study of the HER on Ni-Zn and Ni-S carried out with impedance techniques. In both cases the reaction proceeds through a Volmer-Heyrovsky mechanism. As predicted by kinetic theory, the temperature study shows that the energy of activation of the rate determining step is the same as the energy of activation of the overall reaction.

引用

收藏

页码：641 / 645

页数：5

相关论文

共 17 条

[1] IMPEDANCE PLANE DISPLAY OF A REACTION WITH AN ADSORBED INTERMEDIATE [J].

ARMSTRONG, RD ;

HENDERSON, M .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1972, 39 (01) :81-+

[2] AC IMPEDANCE OF COMPLEX ELECTROCHEMICAL REACTIONS [J].

ARMSTRONG, RD ;

FIRMAN, RE ;

THIRSK, HR .

FARADAY DISCUSSIONS, 1973, 56 :244-263

[3] BEHAVIOR OF OVERPOTENTIAL DEPOSITED SPECIES IN FARADAIC REACTIONS .2. AC IMPEDANCE MEASUREMENTS ON H-2 EVOLUTION KINETICS AT ACTIVATED AND UNACTIVATED PT CATHODES [J].

BAI, L ;

HARRINGTON, DA ;

CONWAY, BE .

ELECTROCHIMICA ACTA, 1987, 32 (12) :1713-1731

[4] AC IMPEDANCE OF FARADAIC REACTIONS INVOLVING ELECTROSORBED INTERMEDIATES - EXAMINATION OF CONDITIONS LEADING TO PSEUDOINDUCTIVE BEHAVIOR REPRESENTED IN 3-DIMENSIONAL IMPEDANCE SPECTROSCOPY DIAGRAMS [J].

BAI, LJ ;

CONWAY, BE .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1991, 138 (10) :2897-2907

[5] STUDY OF THE KINETICS OF HYDROGEN EVOLUTION REACTION ON NICKEL-ZINC ALLOY ELECTRODES [J].

CHEN, LL ;

LASIA, A .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1991, 138 (11) :3321-3328

[6] LEACHING OF RANEY-NICKEL COMPOSITE-COATED ELECTRODES [J].

CHOQUETTE, Y ;

BROSSARD, L ;

MENARD, H .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 1990, 20 (05) :855-863

[7] TEMPERATURE-DEPENDENCE OF THE TAFEL SLOPE AND ELECTROCHEMICAL BARRIER SYMMETRY FACTOR, BETA, IN ELECTRODE-KINETICS [J].

CONWAY, BE ;

TESSIER, DF ;

WILKINSON, DP .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1989, 136 (09) :2486-2493

[8] H-2 EVOLUTION KINETICS AT HIGH-ACTIVITY NI-MO-CD ELECTROCOATED CATHODES AND ITS RELATION TO POTENTIAL DEPENDENCE OF SORPTION OF H [J].

CONWAY, BE ;

BAI, L .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 1986, 11 (08) :533-540

[9] EXPERIMENTAL-EVIDENCE FOR THE POTENTIAL-DEPENDENCE OF ENTROPY OF ACTIVATION IN ELECTROCHEMICAL REACTIONS IN RELATION TO THE TEMPERATURE-DEPENDENCE OF TAFEL SLOPES [J].

CONWAY, BE ;

TESSIER, DF ;

WILKINSON, DP .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1986, 199 (02) :249-269

[10]

DEGIZ MJ, 1992, J APPL ELECTROCHEM, V22, P973