Long-term hydrogen oxidation catalysts in alkaline fuel cells

被引：62

作者：

Kiros, Y ^{[1
]}

Schwartz, S ^{[1
]}

机构：

[1] Royal Inst Technol, Dept Chem Engn & Technol, S-10044 Stockholm, Sweden

来源：

JOURNAL OF POWER SOURCES | 2000年 / 87卷 / 1-2期

关键词：

hydrogen oxidation; platinum; palladium; bimetal; Raney Ni; alkaline fuel cell;

D O I：

10.1016/S0378-7753(99)00436-X

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：

Pt/Pd bimetallic combination and Raney Ni catalysts were employed in long-term electrochemical assessment of the hydrogen oxidation reaction (HOR) in 6 M KOH. Steady-state current vs. potential measurements of the gas diffusion electrodes have shown high activity for these types of catalysts. Durability tests of the electrodes have shown increased stability for the Pt/Pd-based catalysts than the Raney Ni at a constant load of 100 mA/cm(2) and at temperatures of 55 degrees C and 60 degrees C, respectively. Surface, structural and chemical analyses by BET surface area, transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS) were used to characterize the composite electrode/catalyst both before and after the electrochemical testing. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：101 / 105

页数：5

共 24 条

[1]

BEARD C, 1988, J ELECTROCHEM SOC, V133, P1839

[2] STRUCTURE AND PROPERTIES OF RANEY-NICKEL CATALYSTS WITH ALLOYING FOR ALKALINE FUEL-CELLS [J].

EWE, H ;

JUSTI, E ;

SCHMITT, A .

ELECTROCHIMICA ACTA, 1974, 19 (12) :799-808

[3] IMPORTANCE OF INTERATOMIC SPACING IN CATALYTIC REDUCTION OF OXYGEN IN PHOSPHORIC-ACID [J].

JALAN, V ;

TAYLOR, EJ .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1983, 130 (11) :2299-2301

[4]

JUSTI E, 1954, Patent No. 1019361

[5] CHROMIUM-DOPED RANEY-NICKEL CATALYST FOR HYDROGEN ELECTRODES IN ALKALINE FUEL-CELLS [J].

KENJO, T .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1985, 132 (02) :383-386

[6] DOPING EFFECTS OF TRANSITION-METALS ON THE POLARIZATION CHARACTERISTICS IN RANEY-NICKEL HYDROGEN ELECTRODES [J].

KENJO, T .

ELECTROCHIMICA ACTA, 1988, 33 (01) :41-46

[7] COBALT AND COBALT-BASED MACROCYCLE BLACKS AS OXYGEN-REDUCTION CATALYSTS IN ALKALINE FUEL-CELLS [J].

KIROS, Y ;

LINDSTROM, O ;

KAIMAKIS, T .

JOURNAL OF POWER SOURCES, 1993, 45 (02) :219-227

[8] PYROLYZED MACROCYCLES ON HIGH SURFACE-AREA CARBONS FOR THE REDUCTION OF OXYGEN IN ALKALINE FUEL-CELLS [J].

KIROS, Y ;

SCHWARTZ, S .

JOURNAL OF POWER SOURCES, 1991, 36 (04) :547-555

[9] Electrode R&D, stack design and performance of biomass-based alkaline fuel cell module [J].

Kiros, Y ;

Myrén, C ;

Schwartz, S ;

Sampathrajan, A ;

Ramanathan, M .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 1999, 24 (06) :549-564

[10] Electrocatalytic properties of Co, Pt, and Pt-Co on carbon for the reduction of oxygen in alkaline fuel cells [J].

Kiros, Y .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (07) :2152-2157

← 1 2 3 →