POSITIVE ELECTRODE ACTIVE MATERIAL FOR THERMAL CELL, MANUFACTURE THEREOF AND THERMAL CELL USING IT

摘要

PURPOSE: To reduce a rise of inner resistance a positive electrode layer at the time of discharge and supply high working voltage for providing a small- sized and light-weight thermal cell in relation to a positive electrode active material for a thermal cell, in which a positive electrode active material of a lithium iron disulfide thermal cell is improved, as well as its manufacturing method and a thermal cell using it. ;CONSTITUTION: A starting material is to be an iron powder, or a powder, at least whose surface is an iron oxide or iron hydroxide, a metallic iridium powder and sulphor. A positive electrode active material for a thermal cell consisting of a composite compound of iron disulphide and iridium disulphide having an iridium content ratio 5 to 20wt.% is manufactured through a process of mixing the starting material, a process of heating and synthesizing its mixture at a temperature 350 to 500°C and a process of crushing an obtained composite.;COPYRIGHT: (C)1993,JPO&Japio