2020•Unpublished venueOpen access

High-Temperature Alkaline Water Electrolysis

Hui Xu, Judith R. C. Lattimer, Yamini Mohan, Steve McCatty, Prabhakar Singh, Md. Abdur Rahman, Ashish N. Aphale

Abstract

Hydrogen production for mobile and energy storage applications from water electrolysis is attractive due to its high efficiency, fast ramp rates, and potential for the clean energy economy. However, current hydrogen production from electrolysis comprises only a small fraction of the global hydrogen market due to the high cost associated with expensive stack materials (membrane, catalyst, and bipolar plates) and electricity consumption of the commercial electrolysis systems. In this project, we aimed to develop a high temperature alkaline water electrolyzer (HTAWE) that can simultaneously reduce the electrolyzer cost (by adopting cheap material) and improve energy efficiency (by enabling high-temperature operation).

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Key concepts: Polymer electrolyte membrane electrolysis, High-temperature electrolysis, Electrolysis, Electrolysis of water, Hydrogen production, High-pressure electrolysis, Alkaline water electrolysis, Stack (abstract data type)