A non-hydrous electrolyte lithium primary cell and a method for manufacturing manganese dioxide therefor.

摘要

A lithium primary cell includes a cathode active material containing 0.05 to 2.0 parts by weight of phosphorus with respect to 100 parts by weight of manganese dioxide. A cathode active material for a lithium primary cell contains 0.05 to 2.0 parts by weight of phosphorus with respect to 100 parts by weight of manganese dioxide. A method for manufacturing electrolytic manganese dioxide comprises adding at least one member selected from the group consisting of phosphoric acid, phosphorous acid, hypophosphorous acid and compounds thereof to an electrolyte upon manufacturing of electrolytic manganese dioxide by electrolysis using manganese sulfate and a sulfuric acid solution as the electrolyte.