The Super-iron battery is a moniker for a proposed class of rechargeable electric battery. Such batteries feature cathodes composed of ferrate salts, either potassium ferrate () or barium ferrate (). One attraction to the proposed device is that the spent cathode would consist of a rust-like material, which is preferable to batteries based on cadmium, manganese and nickel. See also List of battery types Lithium-ion battery Nanotechnology Nickel-cadmium battery Nickel metal hydride battery References Further reading Super Battery. Battery Bimonthly, Vol.34 No. P.247-249. 2004 Energetic Iron(VI) Chemistry: The Super-Iron Battery, Science, Volume 285, p. 1039, 13 August 1999. "Super-Iron" Comes to the Rescue of Batteries, Science, Volume 285, p. 995, 13 August 1999. Rechargeable batteries