Abstract
Powder catalysts were prepared by immersion of amorphous Ni-40Zr and Ni-40Ti alloys containing a few at % of platinum group elements in HF solution. This treatment led to preferential dissolution of the valve metal and nickel with a consequent formation of microcrystalline alloy powders consisting of concentrated platinum group elements and some nickel and valve metal. Porous gas-diffusion electrodes prepared by using these alloy catalyst powders were employed for electrochemical reduction of oxygen and oxidation of hydrogen in 1 M H2SO4 at 25°C. The activity of the electrodes prepared from the amorphous alloys containing Pt−Ru, Pt−Rh, Pt and Pd for oxygen reduction was considerably higher than that of the platinum black electrode. Oxidation of hydrogen occurred readily close to the equilibrium potential. Amorphous alloy electrodes containing Pt−Ru, Pt−Rh and Pt were more active than the platinum black electrode for the hydrogen oxidation.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
W. Vogel and J. Lundquist,J. Electrochem. Soc. 117 (1970) 1512.
W. Vogel, J. Lundquist and A. Bradford,Electrochim. Acta 17 (1972) 1735.
H. R. Kunz and G. A. Gruver,J. Electrochem. Soc. 122 (1975) 1279.
H. R. Kunz and G. A. Gruver,Electrochim. Acta 23 (1978) 219.
T. Maoka,33 (1988) 371.
33 (1988) 379.
S. C. Yang, M. B. Cutlip and P. Stonehart,34 (1989) 703.
S. C. Yang, M. B. Cutlip and P. Stonehart,35 (1990) 869.
N. Kumagai, Y. Samata, A. Kawashima, K. Asami and K. Hashimoto,J. Appl. Electrochem. 17 (1987) 347.
A. Kawashima, T. Kanda and K. Hashimoto,Mater. Sci. Eng. 99 (1988) 521.
A. Kawashima, T. Kanda, K. Asami and K. Hashimoto, in ‘Corrosion, Electrochemistry and Catalysis of Metallic Glasses,’ (edited by R. B. Diegle and K. Hashimoto), The Electrochemical Society, Pennington, NJ (1988) p. 401.
T. Kanda, A. Kawashima, K. Asami and K. Hashimoto, in Diegle and Hashimoto,, p. 411.
M. Hara, K. Hashimoto and T. Masumoto,J. Appl. Electrochem. 13 (1983) 295.
N. Kumagai, Y. Samata, A. Kawashima, K. Asami and K. Hashimoto, in Diegle and Hashimoto,, p. 390.
A. Damjanovic, A. Dey and J. O'M. Bockris,Electrochim. Acta 11 (1966) 791.
J. Bett, J. Lundquist, E. Washington and P. Stonchart,18 (1973) 343.
J. P. Hoare,13 (1968) 417.
J. M. Martinovic, D. B. Sepa, M. V. Vojnovic and A. Damjanovic,33 (1988) 1267.
T. Kenjo and K. Kawatsu,30 (1985) 229.
A. Damjanovic and V. Brusic,12 (1967) 615.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Hayakawa, Y., Kawashima, A., Habazaki, H. et al. Amorphous nickel-valve metal-platinum group metal alloy electrodes for hydrogen-oxygen sulphuric acid fuel cells. J Appl Electrochem 22, 1017–1024 (1992). https://doi.org/10.1007/BF01029579
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01029579