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US 2021/0313621 A1Published application
Non-Aqueous Electrolyte and Lithium Secondary Battery Including the Same
AssigneeSK Innovation Co., Ltd.
InventorsDai In Park, Myoung Lae Kim, Sung Jin Kim, Yu Na Shim, Joo Hyun Lee, In Haeng Cho
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Abstract
A non-aqueous electrolyte solution according to an embodiment of the present invention includes a non-aqueous organic solvent, a lithium salt and a phosphonate-based additive having a predetermined chemical structure. Surface damage and side reactions of the cathode active material can be suppressed by the phosphonate-based additive. According to an embodiment of the present invention, a lithium secondary battery including the non-aqueous electrolyte solution is provided.
Claims8
A non-aqueous electrolyte solution, comprising:
- a non-aqueous organic solvent;
- a lithium salt;
- and
- a phosphonate-based additive represented by Chemical Formula 1:
- wherein, in Chemical Formula 1, R1 and R2 are each independently a substituted or unsubstituted hydrocarbon having 3 to 10 carbon atoms and including a terminal alkynyl group.
2 more elements
Dependencies are inferred from the claim text.