Electrolyte Additives for Secondary Batteries Non-Aqueous Electrolytes for Lithium Secondary Batteries Containing the Same and Lithium Secondary Batteries Including the Same

The present invention relates to a new electrolyte solution additive, a non-aqueous electrolyte solution for a lithium secondary battery containing the new electrolyte solution additive, and a lithium secondary battery containing the non-aqueous electrolyte solution. In more detail, the present inve...

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Bibliographic Details
Main Authors PARK JUNGWOO, LEE SUNHWA, KIM TAEWOO, KIM JISEUNG, LEE SUWAN
Format Patent
LanguageEnglish
Korean
Published 27.03.2023
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Summary:The present invention relates to a new electrolyte solution additive, a non-aqueous electrolyte solution for a lithium secondary battery containing the new electrolyte solution additive, and a lithium secondary battery containing the non-aqueous electrolyte solution. In more detail, the present invention relates to a non-aqueous electrolyte for lithium secondary batteries, containing an additive capable of forming a stable film on an electrode surface. The present invention also relates to a lithium secondary battery which includes such a non-aqueous electrolyte solution so that the high-temperature lifespan of a lithium secondary battery does not deteriorate and the resistance does not increase when the lithium secondary battery is stored at high temperature, and which includes improved performance in suppressing expansion of the volume (thickness) of the secondary battery when stored at high temperature. 본 발명은 새로운 전해액 첨가제, 이 새로운 전해액 첨가제를 포함하는 리튬 이차전지용 비수 전해액, 및 이 비수 전해액을 포함하는 리튬 이차전지에 관한 것이다. 더욱 상세하게 설명하면, 본 발명은 전극 표면 상에 안정한 피막을 형성할 수 있는 첨가제를 포함하는 리튬 이차전지용 비수 전해액에 관한 것이다. 본 발명은 또한 이러한 비수 전해액을 포함함으로써, 리튬 이차전지의 고온 수명이 열화하지 않고, 리튬 이차전지를 고온에서 저장할 때 저항이 증가하지 않으며, 또한 리튬 이차전지를 고온에서 저장할 때 이차전지의 부피(두께)가 팽창하는 것을 억제하는 성능이 개선된 리튬 이차전지에 관한 것이다.
Bibliography:Application Number: KR20220119980