Electrochemical Methods for Hydrogen Production
Chapter 7: Intermediate Temperature Electrolysers
Published:25 Nov 2019
Special Collection: 2019 ebook collection , ECCC Environmental eBooks 1968-2022Series: Energy and Environment
Jens Oluf Jensen, Christodoulos Chatzichristodoulou, Erik Christensen, Niels J. Bjerrum, Qingfeng Li, 2019. "Intermediate Temperature Electrolysers", Electrochemical Methods for Hydrogen Production, Keith Scott
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The well-established electrolysers belong either to the low temperature class, working at temperatures up to ca. 100 °C (the alkaline electrolyser and the PEM electrolyser) or to the high temperature class, operating at temperatures of ca. 600 °C and above (the solid oxide electrolyser). Intermediate temperature refers to the wide temperature gap between these temperatures. In this chapter, some overarching reflections on the implications of operating electrolysers at intermediate temperatures are followed by three examples of such technologies. The examples chosen are an alkaline electrolyser working at 200–250 °C, a PEM electrolyser working at 120–130 °C and a system based on solid or molten phosphates aiming at CO2 reduction at 200–350 °C.