System Development and Demonstration of Large-Scale High-Temperature Electrolysis. (10th July 2019)

• Record Type: Journal Article
• Authors: Posdziech, Oliver; Geißler, T.; Schwarze, Konstantin; Blumentritt, Robert
• Is Part Of: ECS transactions. Volume 91:Number 1(2019)
• Page Start: 2537
• Page End: 2546
• Publication Date: 2019-07-10
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/09101.2537ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : Sunfire has performed large steps towards the commercialization of large-scale high-temperature (HTE) steam- and co-electrolysers by the development of several HTE generations. The iron and steel works of Salzgitter was the location where Sunfire integrated the first large system in an industrial environment. Based on steam, the electrolyser efficiencies of more than 80%LHV were achieved. The system could be operated reversibly in SOFC mode with electrical efficiencies of about 50%LHV . An optimized SOEC module with increased power density, reduced complexity and costs has been developed and tested under steady and highly dynamic RSOC cycles. Furthermore, a technological breakthrough was achieved with the successful operation of a complete co-electrolysis system. Co-electrolysis enables a highly efficient production of synthesis gas in a single step using water, CO2 and green electricity.