Characterization and performance of high power iron(VI) ferrate batteries

• Published in: Journal of power sources Vol. 134; no. 2; pp. 318 - 323
• Main Authors: Walz, Kenneth A, Suyama, Amy N, Suyama, Wendy E, Sene, Jeosadaque J, Zeltner, Walter A, Armacanqui, Edgar M, Roszkowski, Andrew J, Anderson, Marc A
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 12.08.2004; Elsevier Sequoia
• Subjects: Applied sciences; Battery; Cathode; Direct energy conversion and energy accumulation; Electrical engineering. Electrical power engineering; Electrical power engineering; Electrochemical conversion: primary and secondary batteries, fuel cells; Energy; Energy storage; Energy. Thermal use of fuels; Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc; Exact sciences and technology; Fe(VI); Ferrate; Fuel cells; Power source; Fe(VI); Power source; Ferrate; Cathode; Battery; Energy storage; High performance; Barium; Zinc cell; Iron; Characterization; Surface area; Impedance; Performance; Alkaline cell
• ISSN: 0378-7753; 1873-2755
• DOI: 10.1016/j.jpowsour.2004.03.054

In this paper we report on the high power discharge performance and impedance characteristics of potassium ferrate (K 2FeO 4) and barium ferrate (BaFeO 4) cathodes in zinc alkaline dry cells. The results show that if ferrate materials can be packaged to maximize the cathode surface area, they may offer superior performance over electrolytic manganese dioxide at operating voltages exceeding 1.6 V and currents as high as 100 mA/g of active material.