Journal Article

FZJ-2023-02123

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Solid oxide electrolysis cells – current material development and industrial application

Wolf, S. E.FZJ* ; Winterhalder, F. E.FZJ* ; Vibhu, V.FZJ* ; de Haart, L. G. J.FZJ* ; Guillon, O.FZJ* ; Eichel, R.-A.FZJ* ; Menzler, N. (Corresponding author)FZJ*

2023
RSC London ˜[u.a.]œ

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Please use a persistent id in citations: doi:10.1039/D3TA02161K  doi:10.34734/FZJ-2023-02123

Abstract: Solid Oxide Electrolysis Cells (SOECs) have proven to be a highly efficient key technology for producing valuable chemicals and fuels from renewably generated electricity at temperatures between 600 °C and 900 °C, thus providing a carbon-neutral method for energy storage. The successful implementation of this technology on an industrial level in particular requires the long-term stability of all system components with a concurrent overall degradation rate of a maximum of 0.75 %∙kh-1 or even better 0.5 % k∙h-1, corresponding to a performance loss of 20 % over approx. five years under constant operating parameters1. However, the materials currently used for SOEC systems have been developed and optimized in recent decades for fuel cell operation. The degradation of these Solid oxide Fuel Cell (SOFC) materials to be used in SOECs, however, slows down the technology and market ramp-up. Accordingly, a selection and development of materials specifically for use in SOEC operation, must therefore be based not only on the highest performance but also on the lowest achievable degradation rate. In general, the systematic development of new SOEC materials must be driven towards key performance parameters such as mechanical, thermal, and chemical stability as well as an application-oriented assessment (cost effectiveness, simple manufacturing). This review presents the state-of-the-art materials in current industrial use for SOECs as well as future challenges regarding materials design and degradation. Recent advances in material compositions are discussed and evaluated in terms of their performance, stability, and potential for industrial implementation. In addition, a materials selection for interconnects, coatings, and sealants is briefly listed to outline current developments in these areas.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
2. Grundlagen der Elektrochemie (IEK-9)

Research Program(s):

1. 1232 - Power-based Fuels and Chemicals (POF4-123) (POF4-123)
2. SOFC - Solid Oxide Fuel Cell (SOFC-20140602) (SOFC-20140602)

Appears in the scientific report 2023

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 10 ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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