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Super iron battery

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The Super-iron battery is a new class of rechargeable electric battery. "Super-iron" is a moniker for a special kind of ferrate salt (iron(VI)): potassium ferrate or barium ferrate, as used in this new class of batteries.<ref>Dataweek, 'Super-iron' battery shows great potential, 26 January 2000</ref> As of 2004 chemist Stuart Licht of the University of Massachusetts in Boston was leading research into a Super-iron battery.

"…the new cathode employs salts of an unusual ionic form of ironhexavalent or superoxidized iron — that readily accept three electrons per ion, Licht explains. The more electrons the cathode can accept, the more electricity the battery can supply." —Peter Weiss<ref>Science News, Iron Power: Eking more juice from batteries, Vol. 165, No. 12, p. 181, Week of 20 March 2004</ref>

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