MANUFACTURE OF POSITIVE POLE ACTIVE SUBSTANCE FOR ORGANIC ELECTROLYTE BATTERY

摘要

PURPOSE:To obtain an active substance chalco-pyrite giving a good battery characteristic by removing free sulphur while treating chalco-pyrite with carbon disulfide. CONSTITUTION:The adsorbed free sulphur is melted out and removed by washing chalco-pyrite with carbon disulfide CS2. For instance, CuFeS2 is composed by mixing the cuprous sulfide CU2S and the ferric sulfide FeS2 in the mol ratio of 1:2 and heating up to 600-750 deg.C while using nitric gas or an inactive gas as a ventilation medium. Thereby, free sulphur remains in the generated chalco- pyrite. This is crushed and stirred for two hours in carbon disulfide while being dried for one day and night at 100 deg.C in the reduced pressure for obtaining active substance deprived of free sulphur.