High-voltage-resistant lithium ion battery non-aqueous electrolyte and ternary high-voltage lithium ion battery

A lithium-ion battery, non-aqueous electrolyte technology, applied in non-aqueous electrolytes, battery electrodes, electrical components, etc., can solve problems such as affecting battery life, damaging passivation films, hindering lithium ion migration, etc. The effect of uniformity, corrosion inhibition, and improvement of internal dynamic characteristics
CN112467203AInactive Publication Date: 2021-03-09DONGGUAN SHANSHAN BATTERY MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DONGGUAN SHANSHAN BATTERY MATERIALS
Publication Date
2021-03-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of lithium ion batteries, and discloses a high-voltage-resistant lithium ion battery non-aqueous electrolyte and a ternary high-voltage lithium ion battery. The high-voltage-resistant non-aqueous electrolyte of the lithium ion battery comprises a non-aqueous organic solvent, an electrolyte lithium salt and an additive, wherein the additive comprises a conventional additive and an additive as shown in a compound (1). Compared with the prior art, through the combined action of the combined conventional additive and the additive with the structure shown in the formula (I), a film can be formed on the surface of the positive electrode material, generation of cracks in particles of the positive electrode material in the circulation process is inhibited, dissolution of transition metal elements at high temperature is reduced, and an SEI film can be formed on the surface of the negative electrode material; and meanwhile, the interface impedance canbe reduced, so that the cycle performance, the rate capability and the low-temperature performance of the ternary high-voltage lithium ion battery are effectively improved.
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Description

technical field

[0001] The invention relates to the technical field of lithium-ion batteries, in particular to a non-aqueous electrolyte solution for a high-voltage lithium-ion battery and a ternary high-voltage lithium-ion battery. Background technique

[0002] Lithium-ion batteries are widely used in 3C digital products, power tools, electric vehicles, aerospace and other fields due to their high operating voltage, high energy density, long life, wide operating temperature range, and environmental friendliness. In the field of 3C digital, in recent years, mobile electronic devices, especially smart phones, have developed rapidly towards lighter and thinner, which puts forward higher requirements for the energy density of lithium-ion batteries.

[0003] Compared with commercial lithium cobalt oxide materials, ternary materials have higher theoretical and actual gram capacities, and ternary materials are becoming more and more popular in the field of general rudder applicati...

Claims

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