Super-iron battery

The Super-iron battery is a moniker for a proposed class of rechargeable electric battery. Such batteries feature cathodes composed of ferrate salts, commonly 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 toxic cadmium, manganese and nickel. Another attraction is potentially higher energy capacity.

Other iron-based batteries

 * Lithium iron phosphate battery
 * Lithium iron disulfide battery
 * Nickel–iron battery

Other battery technologies

 * List of battery types
 * Lithium-ion battery
 * Nanotechnology
 * Nickel–cadmium battery
 * Nickel–metal hydride battery