Electrochemical Activity of a La0.9Ca0.1Co1−xFexO3 Catalyst for a Zinc Air Battery Electrode. (29th March 2015)

• Record Type: Journal Article
• Authors: Eom, Seungwook; Ahn, Seyoung; Jeong, Sanghwan
• Other Names: Liao Shijun Academic Editor.
• Is Part Of: Journal of nanomaterials. Volume 2015(2015)
• Publication Date: 2015-03-29
• Subjects: Nanostructured materials -- Periodicals; Nanotechnology -- Periodicals; Nanomatériaux; Nanostructured materials; Nanotechnology; Nanostructures; Nanotechnology; Periodicals; Fulltext; Internet Resources; Periodicals; 620.115
• DOI: 10.1155/2015/724064
• Languages: English
• ISSNs: 1687-4110

Abstract

Abstract : The optimum composition of cathode catalyst has been studied for rechargeable zinc air battery application. La0.9 Ca0.1 Co1− x Fe x O3 ( x = 0 – 0.4 ) perovskite powders were prepared using the citrate method. The substitution ratio of Co 2+ with Fe 3+ cations was controlled in the range of 0–0.4. The optimum substitution ratio of Fe 3+ cations was determined by electrochemical measurement of the air cathode composed of the catalyst, polytetrafluoroethylene (PTFE) binder, and Vulcan XC-72 carbon. The substitution by Fe enhanced the electrochemical performances of the catalysts. Considering oxygen reduction/evolution reactions and cyclability, we achieved optimum substitution level ofx = 0.1 in La0.9 Ca0.1 Co1− x Fe x O3 .