Secondary battery, battery pack, vehicle, stationary power supply, and method of producing secondary battery
AssigneeKabushiki Kaisha Toshiba
InventorsKeigo Hoshina, Takuya Hatakeyama, Yoshiaki Murata, Yasuyuki Hotta, Takashi Kuboki
Life of this patent
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Abstract
According to one embodiment, a secondary battery including a negative electrode, a positive electrode, and an electrolyte is provided. The electrolyte contains water, a lithium salt, and a phosphate ester. The electrolyte contains the water in an amount of 150 ppm or more and 30,000 ppm or less in terms of mass. The lithium salt includes at least one selected from a group consisting of lithium bis (trifluoromethanesulfonyl) imide, lithium bis (fluorosulfonyl) imide, lithium difluorooxalate borate, lithium bisoxalate borate, and lithium triflate.
Claims13
A secondary battery comprising:
- a negative electrode;
- a positive electrode;
- and
- an electrolyte containing water, a lithium salt, and a phosphate ester,
- the electrolyte containing the water in an amount of 150 ppm or more and 30,000 ppm or less in terms of mass, and the lithium salt including at least one selected from a group consisting of lithium bis(trifluoromethanesulfonyl) imide, lithium bis(fluorosulfonyl) imide, lithium difluorooxalate borate, lithium bisoxalate borate, and lithium triflate.
Dependencies are inferred from the claim text.