ELECTROLYTE SOLUTION COMPOSITION AND SECONDARY BATTERY USING SAME
The present invention provides: an electrolyte solution composition comprising a propane sulton compound substituted with a specific substituent group, a cyclic fluorocarbonate-based compound, and a nonaqueous solvent; and a secondary battery comprising the electrolyte solution composition. By inclu...
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Format: | Patent |
Sprache: | eng ; fre ; kor |
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Zusammenfassung: | The present invention provides: an electrolyte solution composition comprising a propane sulton compound substituted with a specific substituent group, a cyclic fluorocarbonate-based compound, and a nonaqueous solvent; and a secondary battery comprising the electrolyte solution composition. By including the cyclic fluorocarbonate-based compound together with the propane sulton compound substituted with a specific substituent group, the electrolyte solution composition according to the present invention exhibits excellent SEI film-forming ability and HF scavenging capacity, and thus can be improved in its lifespan characteristics and thermostability.
La présente invention concerne : une composition de solution électrolytique comprenant un composé de propane sultone substitué par un groupe substituant spécifique, un composé à base de fluorocarbonate cyclique, et un solvant non aqueux ; et une batterie secondaire comprenant la composition de solution électrolytique. En incluant le composé à base de fluorocarbonate cyclique conjointement avec le composé de propane sultone substitué par un groupe substituant spécifique, la composition de solution électrolytique selon la présente invention présente une excellente capacité de formation de film SEI et une excellente capacité de balayage HF, et peut ainsi être améliorée dans ses caractéristiques de durée de vie et sa thermostabilité.
본 발명은 특정 치환기로 치환된 프로판 설톤 화합물, 환상 플루오로 카보네이트계 화합물 및 비수용매를 포함하는 전해액 조성물 및 상기 전해액 조성물을 포함하는 이차전지를 제공한다. 본 발명에 따른 전해액 조성물은 환상 플루오로 카보네이트계 화합물과 특정 치환기로 치환된 프로판 설톤 화합물을 함께 포함함으로써 우수한 SEI 피막 형성 능력과 HF 제거능을 가져 수명특성과 고온안정성이 향상될 수 있다. |
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