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questions :The difference between volume, density and energy
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[Visitor (58.214.*.*)]answers [Chinese ]Time :2023-01-17
There will be some, but most of it will be graphite. In recent years, carbon as the anode material of lithium-ion batteries has attracted widespread attention. Mainly because the use of active metal lithium is avoided, the lithium dendrite formed on the surface of the negative electrode is reduced, so as to obtain high safety and good cycling performance. The electrochemical properties of different types of carbon vary greatly, and graphite is considered to be a suitable anode material due to its high body capacity (LiC6) and low electrode potential (0.01~0.2V). However, the main disadvantage when using graphite as the negative electrode is that the electrolyte decomposes during the first charge and discharge process to cause a large irreversible capacity, and the co-embedding of solvent molecules directly leads to the collapse of the graphite layer, so that the cycle life of the electrode is sharply attenuated.For the same graphite material, the proportion of binder, conductive carbon black and particle size distribution also have a great influence on its electrochemical performance during the electrode preparation. In this paper, cyclic voltammetry and electrochemical capacity testing techniques are used to study various influencing factors in the preparation of negative plates using artificial-modified graphite as the matrix material for lithium-ion batteries, in order to obtain the best composition, so as to improve the comprehensive performance of lithium-ion batteries, and provide experimental basis for the design and selection of materials for the anode of such batteries...
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