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US 11,757,134 B2Granted
Lithium secondary battery and method for manufacturing battery-incorporating device
AssigneeNGK Insulators, Ltd.
InventorsYuki Fujita, Chiori Suzuki
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Abstract
Provided is a secondary lithium battery including: a positive electrode plate that is a sintered lithium complex oxide plate; a negative electrode containing carbon and styrene butadiene rubber (SBR); and an electrolytic solution containing lithium borofluoride (LiBF4) in a non-aqueous solvent composed of γ-butyrolactone (GBL), or composed of ethylene carbonate (EC) and γ-butyrolactone (GBL).
Claims12
A secondary lithium battery, comprising:
- a positive electrode plate that is a lithium complex oxide sintered plate and contains no binder;
- a negative electrode containing graphite and styrene butadiene rubber (SBR);
- and
- an electrolytic solution containing lithium borofluoride (LiBF4) in a non-aqueous solvent composed of γ-butyrolactone (GBL), or composed of γ-butyrolactone (GBL) and ethylene carbonate (EC);
- wherein the non-aqueous solvent has an EC:GBL volume ratio of 0:1 to 1:3, and
- wherein the electrolyic solution has a LiBF4 concentration of 0.5 to 2 mol/L.
3 more elements
Dependencies are inferred from the claim text.