锂离子电池电解液及锂离子电池

By using metal oxides containing oxygen defects and specific organic compounds as electrolyte additives in lithium-ion batteries, the problem of oxygen generation in the positive electrode lithium replenishment material during the later charging process is solved, thereby improving the performance and safety of the battery.

CN115498258BActive Publication Date: 2026-07-17SHENZHEN DYNANONIC INNOVAZONE NEW ENERGY TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN DYNANONIC INNOVAZONE NEW ENERGY TECH CO LTD
Filing Date
2022-08-16
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing lithium-ion batteries, the positive electrode lithium replenishment material continues to decompose and generate oxygen during the later charging process, leading to battery performance degradation and safety hazards. Existing solutions have not completely solved this problem.

Method used

Using metal oxides containing oxygen defects, organic compounds carrying groups that can react with oxygen, and organic compounds carrying groups that inhibit oxygen production as electrolyte additives, the overall properties of the battery are improved and safety hazards are reduced by consuming or inhibiting oxygen generation through physical adsorption and chemical reactions.

Benefits of technology

It effectively consumes the oxygen generated by the positive electrode lithium supplementation additive, improves the overall performance of the battery, reduces the safety hazards of battery use, and makes the battery more widely used.

✦ Generated by Eureka AI based on patent content.

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Abstract

本申请涉及锂离子电池技术领域,尤其涉及一种电解液添加剂、锂离子电池电解液及锂离子电池。提供了一种电解液添加剂,所述电解液添加剂包括含有氧缺陷的金属氧化物、携带能够与氧气反应的基团的有机物、携带抑制氧气产生的基团的有机物中的至少一种;提供的电解液添加剂能够与氧气反应或抑制氧气产生,从而缓解锂离子电池中添加了正极补锂材料后易产生氧气的问题,提高了电池的整体性质,并且降低电池使用的安全隐患,使电池的应用更广泛。
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