Electrolytic iron sulfides for thin-layer lithium-ion batteries

Thin-layer electrolytic iron sulfides synthesized on stainless steel substrates were studied in prototype lithium and lithium-ion batteries with an electrolyte composed of ethylene carbonate, dimethyl carbonate, and 1 M LiClO 4 . A two-volt lithium-ion system with electrolytic iron sulfide and LiCoO 2 as negative and positive electrodes, respectively, was suggested. The discharge capacity of the prototype system is 350–400 mA h g −1 Fe sulfide.