High-voltage lithium-ion battery with a wide electrochemical window of polymer electrolytes
AssigneeCity University of Hong Kong
InventorsChunyi ZHI, Yue HOU
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Abstract
The present invention relates to a PVTF-based solid polymer electrolyte, comprising: a polymer matrix; a N,N-Dimethylformamide (DMF) solvent; and a lithium bis(trifluoromethanesulfonyl)imide (LiTFSI). The PVTF-based solid polymer electrolyte demonstrates an exceptional electrochemical window of up to 5.68 V, a significantly higher ionic conductivity of 1.91×10−3 S cm−1 at ambient temperature, and the PVTF-based solid polymer electrolyte has a glass transition temperature (Tg) lower than −38° C.
Claims15
A PVTF-based solid polymer electrolyte, comprising:
- a polymer matrix;
- a N, N-Dimethylformamide (DMF) solvent;
- and
- lithium bis(trifluoromethanesulfonyl)imide (LiTFSI),
- wherein the PVTF-based solid polymer electrolyte demonstrates an exceptional electrochemical window of up to 5.68 V, a significantly higher ionic conductivity of 1.91×10−3 S cm−1 at ambient temperature, and the PVTF-based solid polymer electrolyte has a glass transition temperature (Tg) lower than −38° C.
A high-voltage solid-state lithium-ion battery with a wide electrochemical window of polymer electrolytes, comprising:
- a cathode material;
- an anode material;
- a solid polymer electrolyte,
- wherein the high-voltage solid-state lithium-ion battery has a consistent cycling performance over 200 cycles at 0.5 C, along with an impressive high-capacity retention of 75%.
Dependencies are inferred from the claim text.