Efficient sulfur/carbon doped lithium cobalt oxide cathode material and preparation method thereof
A positive electrode material, lithium cobalt oxide technology, which is applied in the field of high-efficiency sulfur/carbon doped lithium cobalt oxide positive electrode material and its preparation, can solve problems such as restricting development prospects, lack of cobalt resources, and high price, and achieve extended storage time, Improved self-discharge, low-cost effect
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[0013] The high-efficiency sulfur / carbon doped lithium cobalt oxide positive electrode material is prepared by the following components according to the ratio shown, sulfur / carbon composite material 30, active material 95, functional material 3, conductive material 6, Adhesive material6. The functional material is 60% lithium iron nitrate solution. The positive electrode material is lithium cobalt oxide. The conductive agent is flake graphite
[0014] The preparation method of the high-efficiency sulfur / carbon doped lithium cobalt oxide cathode material comprises the following steps:
[0015] (1) Put the carbon material and sublimed sulfur or sulfur powder into a zirconia or agate ball mill jar according to the above weight ratio, inject the ball mill jar with high-purity inert gas in the glove box, and place it on a planetary ball mill for 5 hours. The ball milling speed is 500 r / min, the mass ratio of elemental sulfur and carbon is 1:2~3:2; the sulfur / carbon composite mat...
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