Pd-Ag hydrogen diffusion cathode for alkaline water electrolysers

A. Pozio, M. De Francesco, Z. Jovanovic, S. Tosti

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Abstract

This paper describes experimental work involving the direct-current electrolysis of potassium hydroxide solutions at medium temperatures (up to 80 °C) and atmospheric pressure. An electrolytic cell with a palladium-silver alloy cathode as a source of ultrapure hydrogen was designed and tested. This cathode consists of a dense Pd-Ag tube capable to selectively separate hydrogen from other gases. Thin wall thickness (50 μm) of the permeator tube permitted to attain high hydrogen permeation fluxes and high hydrogen yields. Starting from results, a prototype electrolyzer is designed. © 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)5211 - 5217
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume36
Issue number9
DOIs
Publication statusPublished - May 2011

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All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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