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US 2014/0178751 A1Published application
Lithium ion secondary battery and electrolyte additive for the same
AssigneeIndustrial Technology Research Institute
InventorsTsung-Hsiung Wang, Chung-Liang Chang, Jing-Pin Pan
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Abstract
Provided is an electrolyte additive for a lithium ion secondary battery including an organic lithium compound and a hyper-branched structure material. The electrolyte additive enhances the decomposition voltage of the electrolyte up to 5.5 V, and increases the heat endurable temperature by 10° C. or more. The safety of the battery is thus improved.
Claims22
An electrolyte additive for a lithium ion secondary battery, comprising:
- a nitrogen-containing organic lithium compound;
- and
- a hyper-branched structure material.
A lithium ion secondary battery, comprising:
- a positive electrode;
- a negative electrode;
- a separator film;
- an electrolyte solution;
- and
- an electrolyte additive, comprising a nitrogen-containing organic lithium compound and a hyper-branched structure material.
3 more elements
Dependencies are inferred from the claim text.