Pd–Ag hydrogen diffusion cathode for alkaline water electrolysers

✍ Scribed by A. Pozio; M. De Francesco; Z. Jovanovic; S. Tosti

• Book ID: 103833101
• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 419 KB
• Volume: 36
• Category: Article
• ISSN: 0360-3199
• DOI: 10.1016/j.ijhydene.2011.01.168

✦ Synopsis

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 palladiumesilver alloy cathode as a source of ultrapure hydrogen was designed and tested. This cathode consists of a dense PdeAg tube capable to selectively separate hydrogen from other gases. Thin wall thickness (50 mm) of the permeator tube permitted to attain high hydrogen permeation fluxes and high hydrogen yields. Starting from results, a prototype electrolyzer is designed.