A Comparison of Alkaline
and Proton Exchange Membrane Electrolyzers¹

D. Lj. Stoji^a, T. D. Grozdi^b, B. Umievi^a, and A. D. Maksi^a

^a Vina Institute of Nuclear Sciences, Belgrade, Serbia

^b Centre for Multidisciplinary Studies, University of Belgrade, Belgrade, Serbia

e-mail: gtomisi@Eunet.yu

Received March 5, 2007

Abstract—Faraday efficiencies and energy consumptions of a small commercial proton exchange membrane
(PEM) and an alkaline electrolyzer designed at our laboratory and equipped with different cathode materials were
determined. Our experimental data indicate that the alkaline electrolyzer has a higher Faraday efficiency than the
PEM electrolyzer, but, on the other hand, less energy is required for the PEM electrolyzer compared with the alka-
line one. The results are discussed with regard to the special advantages of electrolyzers of both types.

DOI: 10.1134/S0036024408110289

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