Application of mixed expanded graphite serving as lithium ion battery negative electrode material
A lithium-ion battery and negative electrode material technology, which is applied in battery electrodes, circuits, electrical components, etc., can solve problems such as research on negative electrode material technology for lithium-ion batteries that have not been seen before, and achieve the advantages of ion adsorption, large reserves, and improved intercalation. Effects and Efficiency
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[0027] Example 1
[0028] This embodiment is an application of mixed expanded graphite as a negative electrode material for lithium ion batteries. This embodiment first uses mixed expanded graphite as a lithium ion negative electrode material to prepare a lithium ion battery. The negative electrode material: SBR (solid content 50%): CMC: The weight ratio of Super-p is 95.5:2:1.5:1, then add an appropriate amount of deionized water to make it into a ginger shape, coat it on copper foil and dry in a vacuum drying oven for 12 hours to make a negative electrode sheet, lithium ion battery The electrolyte is 1MLiPF6 / EC+DEC+DMC=1:1:1, the diaphragm is a polypropylene microporous membrane, the counter electrode is a lithium sheet, and the battery is assembled in a glove box in a closed argon atmosphere, where the mixed expansion The graphite material is prepared by the following method:
[0029] S1. Take the microcrystalline graphite raw material with 70% carbon content and the flake grap...
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