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US 12,300,784 B2Granted
Lithium ion secondary battery
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsHonami Sako, Masahisa Fujimoto
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Abstract
A lithium ion secondary battery includes a positive electrode, a negative electrode, and an electrolyte disposed between the positive electrode and the negative electrode. The electrolyte includes a polymeric electrolyte. The polymeric electrolyte is composed of a polymer and a lithium salt of a fluorosulfonyl-group-containing compound, and the polymer is a polymer of a vinylene carbonate species. The lithium salt of a fluorosulfonyl-group-containing compound includes lithium bis(fluorosulfonyl)imide.
Claims8
A lithium ion secondary battery comprising:
- a positive electrode;
- a negative electrode;
- and
- a polymeric electrolyte film disposed between the positive electrode and the negative electrode,
- wherein the polymeric electrolyte film contains lithium bis(fluorosulfonyl)imide and a copolymer of a vinylene carbonate species and a fluoroolefin.
2 more elements
Dependencies are inferred from the claim text.