LITHIUM SECONDARY BATTERY
To provide a lithium secondary battery which suppresses degradation of a charge capacity and is excellent in cycle characteristics.SOLUTION: A lithium secondary battery includes at least a positive electrode, a negative electrode, an electrolyte and a separator, wherein the electrolyte contains a co...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide a lithium secondary battery which suppresses degradation of a charge capacity and is excellent in cycle characteristics.SOLUTION: A lithium secondary battery includes at least a positive electrode, a negative electrode, an electrolyte and a separator, wherein the electrolyte contains a compound A having a specific lithium salt, a specific organic salt and a specific fluorobenzene skeleton, a mixture ratio of the compound A is 0.6 to 27 wt.% with respect to the total weight of the lithium salt, the organic salt and the compound A, and the separator is formed of a porous base material containing a polyimide resin.SELECTED DRAWING: None
【課題】充電容量の低下が抑制された、サイクル特性に優れたリチウム二次電池を提供すること。【解決手段】正極と、負極と、電解質と、セパレータとを少なくとも含むリチウム二次電池であって、該電解質は、特定のリチウム塩と、特定の有機塩と、特定のフルオロベンゼン骨格を有する化合物Ａと、を含み、該化合物Ａの混合比が、該リチウム塩と該有機塩と該化合物Ａの全重量に対して、０．６－２７重量％であり、該セパレータは、ポリイミド樹脂を含む多孔質基材で形成されたものある、リチウム二次電池を提供する。【選択図】なし |
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