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

• DOI: 10.1126/science.285.5430.1039
• Publication Date: 2002-07-27T09:49:42Z
• Authors: Stuart Licht; Baohui Wang; Susanta Ghosh
• Keywords: Alkaline battery; Potassium hydroxide; Potassium-ion battery

Higher capacity batteries based on an unusual stabilized iron(VI) chemistry are presented. The storage capacities of alkaline and metal hydride largely cathode limited, both use a potassium hydroxide electrolyte. new compatible with the battery anodes but have higher available, benign materials. Iron(VI/III) cathodes can low-solubility K(2)FeO(4) BaFeO(4) salts respective 406 313 milliampere-hours per gram. Super-iron 50 percent energy advantage compared to conventional batteries. A cell anode is significantly (75 percent) rechargeable.