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Science 13 August 1999:
Vol. 285. no. 5430, pp. 1039 - 1042
DOI: 10.1126/science.285.5430.1039
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Reports

Energetic Iron(VI) Chemistry: The Super-Iron Battery

Stuart Licht, * Baohui Wang, Susanta Ghosh

Higher capacity batteries based on an unusual stabilized iron(VI) chemistry are presented. The storage capacities of alkaline and metal hydride batteries are largely cathode limited, and both use a potassium hydroxide electrolyte. The new batteries are compatible with the alkaline and metal hydride battery anodes but have higher cathode capacity and are based on available, benign materials. Iron(VI/III) cathodes can use low-solubility K2FeO4 and BaFeO4 salts with respective capacities of 406 and 313 milliampere-hours per gram. Super-iron batteries have a 50 percent energy advantage compared to conventional alkaline batteries. A cell with an iron(VI) cathode and a metal hydride anode is significantly (75 percent) rechargeable.

Department of Chemistry and Institute of Catalysis Science, Technion--Israel Institute of Technology, Haifa 32000, Israel.
*   To whom correspondence should be addressed. E-mail: chrlicht{at}techunix.technion.ac.il

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
An Octahedral Coordination Complex of Iron(VI).
J. F. Berry, E. Bill, E. Bothe, S. D. George, B. Mienert, F. Neese, and K. Wieghardt (2006)
Science 312, 1937-1941
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