| 摘要 |
The invention relates to a lithium ion rechargeable accumulator or secondary battery comprising a negative electrode, the active material of which is graphite carbon, a positive electrode, the active material of which is LiFePO4, and an ionic liquid electrolyte comprising at least one ionic liquid of formula C+A−wherein C+ represents a cation and A−represents an anion, and at least one conducting salt, the ionic liquid electrolyte further comprising an organic additive which is vinyl ethylene carbonate (VEC).
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