Electrolyte Stability in Direct-Carbon Fuel Cells with Molten Sb Anodes. (2nd June 2015)

• Record Type: Journal Article
• Authors: Oh, Tae-Sik; Zhou, Xiaoliang; Vohs, John M.; Gorte, Raymond J.
• Is Part Of: ECS transactions. Volume 68:Number 1(2015)
• Page Start: 2695
• Page End: 2702
• Publication Date: 2015-06-02
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/06801.2695ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : The long-term stability of direct carbon fuel cells with oxygen ion conducting solid electrolytes and molten Sb anodes has been examined. We have investigated previously observed etching phenomenon as a function of the electrolyte composition and cell operating conditions. We conclusively show that electrolyte etching is not electrochemical in nature, but rather results from chemical reaction between the electrolyte and Sb2 O3 that is produced during cell operation. Chemical reaction tests also support this conclusion.