Sulfur/carbon coated lithium manganate cathode material and preparation method thereof
A positive electrode material, lithium manganate technology, applied in the field of lithium manganate positive electrode material and its preparation, can solve the problems of restricting development prospects, lack of manganese resources, high price, etc., and achieve the goal of prolonging storage time, improving self-discharge, and low cost Effect
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[0014] The sulfur / carbon coated lithium manganate cathode material is based on parts by weight and is prepared from the following components in the ratio shown: sulfur / carbon composite material 15-25, active material 80-85, functional material 5-10 , Conductive materials 3~5, bonding materials 3~5. The functional material is a 60% lithium iron nitrate solution. The positive electrode material is lithium manganate. The conductive agent is flake graphite
[0015] The preparation method of the sulfur / carbon coated lithium manganate cathode material includes the following steps:
[0016] (1) Put the carbon material and the sublimated sulfur or sulfur powder into the zirconium dioxide or agate ball milling tank according to the above-mentioned weight ratio. After injecting the high-purity inert gas into the ball milling tank in the glove box, place it on the planetary ball mill for ball milling for 5 hours. The ball milling speed is 500 r / min, and the mass ratio of elemental sulfur t...
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