Abstract
Chemically stable and physically strong, but relatively expensive diaphragms with low electrical surface-specific resistance have been developed for alkaline water electrolysis intended to work at temperature around and above 120°C at increased current densities and yet reduced cell voltage. These diaphragms are made of a porous cermet produced from ceramic particles (group 2A titanates) and NiO by reductive sintering. Two versions of such cermets have been investigated: a nickel net-supported diaphragm and a diaphragm which is supported by two porous metal electrodes.
Similar content being viewed by others
References
G. Imarisio and A. S. Strub (editors), ‘Hydrogen as an Energy Carrier’, Proc. 3rd Int. Seminar, Lyon, 25–27 May, D. Reidel (1983).
J. Pottier, M. Avallet and M. Mousset, Caracterisation sur Boucle d'Essais d'un Diaphragme en Titanate de Calcium sur Grille de Nickel, report from Gaz de France, private communication (1986).
L. Giuffre, G. Modica, E. Montoneri and E. Tempesti, ‘Synthesis and Development of Electrolytic Separators for the Electrolysis of Alkaline Water’, see [1] Proc. 3rd Int. Seminar, Lyon, 25–27 May, D. Reidel (1983), p. 320.
L. Giuffre, G. Modica, S. Maffi, E. Montoneri and E. Tempesti,Int. J. Hydrogen Energy 5 (1986) 307.
H. Wendt and H. Hofmann, ‘Composite Diaphragms for Medium Temperature (120–160° C) Water Electrolysis’, see [1] Proc. 3rd Int. Seminar, Lyon, 25–27 May, D. Reidel (1983), p. 286.
B. Roz, T. Nenner and M. Roux, ‘L'Autonome: an Advanced Automatic 30 kW, 110° C Electrolyzer’ see [1], Proc. 3rd Int. Seminar, Lyon, 25–27 May, D. Reidel (1983), p. 160.
Patent EUR 83 106 3342 (1983).
E. Ryshkewitch, ‘Oxide Ceramics’, Academic Press, London (1960).
J. Divisek, P. Malinowski, J. Mergel and H. Schmitz,Int. J. Hydrogen Energy 13 (1988) 141.
W. M. Vogel, K. J. Routsis and V. J. Kehrer,J. Chem. Eng. Data 12 (1967) 467.
M. B. Knaster and L. A. Appelbaum,Zh. Fiz. Khim. 38 (1964) 223.
W. M. Vogel and S. W. Schmith,J. Electroanal. Chem. 18 (1968) 215.
‘Handbook of Chemistry and Physics’, CRC Press, Cleveland (1984).
Alfa-Catalog, European Edition (1987).
H. Wendt and H. Hofmann,Int. J. Hydrogen Energy 10 (1985) 375.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Wendt, H., Hofmann, H. Ceramic diaphragms for advanced alkaline water electrolysis. J Appl Electrochem 19, 605–610 (1989). https://doi.org/10.1007/BF01022121
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01022121