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    • 8. 发明公开
    • 비수 전해액 및 이를 이용한 이차 전지
    • 非水电解质和二次电池使用相同
    • KR1020090040214A
    • 2009-04-23
    • KR1020080097783
    • 2008-10-06
    • 주식회사 엘지화학
    • 고정환하용준박진현이철행임영민안정애
    • H01M10/05H01M4/02
    • H01M10/0567H01M10/0525H01M2300/0025Y02E60/122
    • A non-aqueous electrolyte is provided to improve life-time and capacity retention for a secondary battery by forming a stable solid electrolyte interface membrane on a surface of the electrolyte. A non-aqueous electrolyte comprises an electrolyte salt, an electrolytic solvent and a sulfonate-based compound. The sulfonate-based compound has two or more sulfonate groups of which one or more sulfonate groups are substituted with a C3~C20 alkenyl group having beta,gamma-unsaturated carbon. The C3~C20 alkenyl group having beta,gamma-unsaturated carbon has a conjugation structure. An electrode includes a solid electrolyte interface membrane formed by electrical reduction of the sulfonate-based compound on the whole or some part of a surface.
    • 提供非水电解质以通过在电解质的表面上形成稳定的固体电解质界面膜来改善二次电池的寿命和容量保持。 非水电解质包含电解质盐,电解溶剂和基于磺酸盐的化合物。 磺酸酯基化合物具有两个或多个磺酸酯基,其中一个或多个磺酸酯基被具有β,γ-不饱和碳的C 3〜C 20烯基取代。 具有β,γ-不饱和碳的C 3〜C 20烯基具有共轭结构。 电极包括通过在表面的整个或一部分上电解还原基于磺酸盐的化合物形成的固体电解质界面膜。