The numerical investigation of a planar single chamber solid oxide fuel cell performance with a focus on the support types. (28th February 2020)

• Record Type: Journal Article
• Authors: Kamvar, Majid; Ghassemi, Majid; Steinberger-Wilckens, Robert
• Is Part Of: International journal of hydrogen energy. Volume 45:Number 11(2020)
• Page Start: 7077
• Page End: 7087
• Publication Date: 2020-02-28
• Subjects: Single chamber -- Solid oxide fuel cell -- Hydrogen-air -- Premixed -- Lack of oxygen -- Support types; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2019.12.220
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Single chamber solid oxide fuel cells (SC-SOFCs) could be an alternative to the conventional dual chamber types since they do not need any sealant and electrolyte crack growth does not lead to failure in performance. However, the reduced reactant activity due to spectator species present at anode and cathode results in a significantly decreased performance. The focus of this paper is to present a comparative study on the performance of single-chamber anode-, cathode, and electrolyte-supported cells. Our results show that anode-supported cells offer significantly better performance compared to electrolyte-supported cells. The cathode-supported cells show a similar performance to anode-supported cell close to open circuit voltages, i.e. voltages above 0.92 V, after which the cell current density decreases due to lack of oxygen at the cathode catalyst layer. Finally, a time-dependent performance study of the cathode-supported cell concept is presented and discussed. Highlights: Steady-state and time dependent performance study of a planar SCSOFC is presented for the first time. Cathode supported cell is not suggested for SCSOFC using hydrogen-air premix. Anode supported cell is the best scheme for SCSOFC using hydrogen-air premix.