Lithium electrochemical generator operating with an aqueous electrolyte

摘要

The generator has a cell comprising an electrolyte with an aqueous solution of potash, soda and lithium salt e.g. lithium hydroxide. A polymer film made of polyolefin supports the electrolyte whose pH value is 14. A positive electrode has a lithium intercalation potential (V-V) higher than 3.4 Volts, and comprises olivine lithium metal phosphates, where the metal is chosen from iron, manganese, nickel and cobalt. A negative electrode has a lithium intercalation potential less than 2.2 Volts, and comprises a material chosen from lithium-titanate, titanium dioxide and lithium titanium oxide.