Non-aqueous electrolyte solution for high-voltage lithium ion secondary battery and high-voltage lithium ion secondary battery

A non-aqueous electrolyte, lithium-ion battery technology, applied in secondary batteries, electrolytes, circuits, etc., can solve the problem that battery performance needs to be further improved, and achieve excellent cycle performance and high temperature performance, high decomposition voltage and oxidation resistance, The effect of excellent cycle performance
CN105680088AInactive Publication Date: 2016-06-15DONGUAN KAIXIN BATTERY MATERIAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DONGUAN KAIXIN BATTERY MATERIAL
Publication Date
2016-06-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a non-aqueous electrolyte solution for a high-voltage lithium ion secondary battery. The non-aqueous electrolyte solution comprises a non-aqueous solvent, a lithium salt dissolved in the non-aqueous solvent and additives, wherein the non-aqueous solvent comprises 1-15mass% of fluorobenzene in the electrolyte; and the additives comprise fluoroethylene carbonate (FEC) and a tri-nitrile material. Due to the non-aqueous electrolyte solution for the high-voltage lithium ion secondary battery, the high-voltage lithium ion secondary battery can obtain excellent cycling performance and high-temperature performance.
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Description

technical field

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

[0002] Lithium-ion battery is the most competitive battery of the new generation, known as "green energy", and is the preferred technology to solve contemporary environmental pollution and energy problems. In recent years, lithium-ion batteries have achieved great success in the field of high-energy batteries, but consumers still expect batteries with higher comprehensive performance, which depends on the research and development of new electrode materials and electrolyte systems.

[0003] At present, electronic digital products such as smartphones and tablet computers have higher and higher energy density requirements for batteries, making it difficult for commercial lithium-ion batteries to meet the requirements. There are...

Claims

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