In traditional batteries, the electrolytic liquid system usually USES water as the solvent, but since the theoretical decomposition voltage of water is 1.23v, considering the overpotential of hydrogen or oxygen, the highest battery voltage of the electrolytic liquid system using water as the solvent is only about 2V (for example, lead-acid batteries).In lithium ion batteries, the operating voltage of the battery is usually as high as 3~4V, and the traditional aqueous solution is no longer applicable. Therefore, non-hydroelectrolytic liquid system must be used as the electrolyte of lithium ion batteries.The non-aqueous organic solvent is the main component of the electrolyte.
Electrolyte additives are mainly classified：
In general, the solvent system, the role of additives, lithium properties, water acidity control, compatibility with electrode materials, and so on jointly determine the performance of the electrolyte.Electrolyte is an important part of lithium ion battery, so grasp the electrolyte component is the key to give full play to the battery performance.
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