A battery electrolyte and a lithium ion battery containing the electrolyte
An electrolyte and battery technology, which is applied in the field of lithium-ion batteries, can solve the problems of reducing the constant current charging ratio and capacity of the battery, consuming hydrofluoric acid, and increasing the internal resistance of the battery, so as to improve high-temperature cycle performance and high-temperature cycle performance , the effect of suppressing flatulence
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Embodiment 1
[0028] In a glove box filled with argon, based on the total mass of the battery electrolyte, the mass fraction of 12.0% LiPF was weighed 6 Dissolved in an organic solvent with a mass fraction of 87%, wherein the organic solvent is a mixed solvent of ethylene carbonate: diethyl carbonate: ethyl methyl carbonate=3:2:5 (w / w / w), and then The film-forming additive ethylene carbonate with a mass fraction of 0.5% and the additive A with a mass fraction of 0.5% were added thereto, and the electrolyte solution 1 was obtained after stirring evenly.
Embodiment 2
[0030] In a glove box filled with argon, based on the total mass of the battery electrolyte, the mass fraction of 12.0% LiPF was weighed 6 Dissolved in an organic solvent with a mass fraction of 87%, wherein the organic solvent is a mixed solvent of ethylene carbonate: diethyl carbonate: ethyl methyl carbonate=3:2:5 (w / w / w), and then The film-forming additive ethylene carbonate with a mass fraction of 0.5% and the additive B with a mass fraction of 0.5% were added thereto, and the electrolyte solution 2 was obtained after stirring evenly.
Embodiment 3
[0032] In a glove box filled with argon, based on the total mass of the battery electrolyte, the mass fraction of 12.0% LiPF was weighed 6 Dissolved in an organic solvent with a mass fraction of 87%, wherein the organic solvent is a mixed solvent of ethylene carbonate: diethyl carbonate: ethyl methyl carbonate=3:2:5 (w / w / w), and then Add film-forming additive ethylene carbonate with a mass fraction of 0.5% and additive C with a mass fraction of 0.5% to it, and stir to obtain electrolyte 3.
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