Micro-solid oxide fuel cells: status, challenges, and chances

TitleMicro-solid oxide fuel cells: status, challenges, and chances
Publication TypeJournal Article
Year of Publication2009
AuthorsEvans, A, Bieberie-Huetter, A, Galinski, H, Rupp, JLM, Ryll, T, Scherrer, B, Toelke, R, Gauckler, LJ
JournalMonatshefte Fur Chemie
Pagination975 - 983
Date Published2009/09//

Micro-solid oxide fuel cells (micro-SOFC) are predicted to be of high energy density and are potential power sources for portable electronic devices. A micro-SOFC system consists of a fuel cell comprising a positive electrode-electrolyte-negative electrode (i.e. PEN) element, a gas-processing unit, and a thermal system where processing is based on micro-electro-mechanical-systems fabrication techniques. A possible system approach is presented. The critical properties of the thin film materials used in the PEN membrane are discussed, and the unsolved subtasks related to micro-SOFC membrane development are pointed out. Such a micro-SOFC system approach seems feasible and offers a promising alternative to state-of-the-art batteries in portable electronics.