Improved efficiency of graphite coated by arduous carbon of PTCDA sodium salt for lithium-ion batteries: Fullerenes, Nanotubes and Carbon Nanostructures: Vol 0, No 0

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Summary

The graphite layers are mixed with van der Waals forces. Through the charging and discharging course of, the graphite layer spacing modifications, inflicting the graphite flakes to peel off and pulverize, leading to unsatisfactory electrical cycle efficiency. As well as, lithium ions can solely be inserted from the tip floor of the graphite, Will inevitably trigger the rise of lithium-ion diffusion resistance, and have an effect on the battery fee efficiency. On this paper, a sodium salt of perylene tetracarboxylic acid dianhydride is used. By adjusting completely different coating modification processes, the graphite anode particles coated with sodium salt of perylene tetracarboxylic acid dianhydride are additional calcined at excessive temperature to acquire a graphite-like construction The amorphous arduous carbon-coated modified graphite anode materials, by comparability, it’s discovered that completely different thicknesses (9–40 nm) of natural carbon coating present completely different floor morphologies, which successfully improves the structural stability of the graphite anode materials. Efficiency, and at last get hold of extra wonderful capability, cycle stability efficiency and fee efficiency.

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