Nonaqueous electrolyte solution and nonaqueous electrolyte secondary battery using same

A non-aqueous electrolyte and secondary battery technology, which is applied in the direction of non-aqueous electrolyte batteries, non-aqueous electrolyte battery electrodes, secondary batteries, etc., can solve the problems of battery capacity reduction, battery material degradation, safety reduction, etc. The effect of excellent gas generation and cycle characteristics
CN104584309AActive Publication Date: 2015-04-29MITSUBISHI CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
MITSUBISHI CHEM CORP
Publication Date
2015-04-29

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Abstract

The objective of the present invention is to provide: a nonaqueous electrolyte solution which improves cycle characteristics and load characteristics, while suppressing the generation of a gas; and a nonaqueous electrolyte secondary battery which uses this nonaqueous electrolyte solution. The present invention relates to a nonaqueous electrolyte solution which is used in a nonaqueous electrolyte secondary battery that is provided with a positive electrode and a negative electrode that have active materials capable of absorbing and desorbing metal ions. This nonaqueous electrolyte solution contains a compound represented by general formula (1), and additionally contains a specific amount of a carboxylic acid or at least one compound that is selected from the group of specific compounds such as a cyclic carbonate compound having an unsaturated bond.
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Description

technical field

[0001] The present invention relates to a nonaqueous electrolytic solution and a nonaqueous electrolytic solution secondary battery using the nonaqueous electrolytic solution. Background technique

[0002] With the rapid progress of electronic equipment, the demand for higher capacity of secondary batteries continues to increase. Compared with nickel-cadmium batteries and nickel-hydrogen batteries, non-aqueous electrolyte batteries such as lithium-ion secondary batteries with high energy density are favored. Widely used and actively researched.

[0003] The electrolyte solution used in the non-aqueous electrolyte battery is usually mainly composed of an electrolyte and a non-aqueous solvent. As the electrolyte solution of lithium-ion secondary batteries, LiPF 6 、LiBF 4 , LiN(CF 3 SO 2 ) 2 Non-aqueous electrolyte solution obtained by dissolving electrolyte such as ethylene carbonate, propylene carbonate and other high dielectric constant solvents and low...

Claims

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