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Nonaqueous electrolytic solution and nonaqueous electrolytic solution secondary battery using the same

A non-aqueous electrolyte and secondary battery technology, applied in the direction of non-aqueous electrolyte batteries, secondary batteries, non-aqueous electrolytes, etc., can solve the problems of battery stability reduction, battery capacity reduction, deterioration, etc., to achieve suppression of gas generation, The effect of excellent discharge load characteristics

Active Publication Date: 2019-10-18
MITSUBISHI CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] If the lithium-ion secondary battery is repeatedly charged and discharged, the electrolyte will be decomposed on the electrodes or the materials constituting the battery will deteriorate, and the capacity of the battery will decrease.
In addition, depending on the situation, there is a possibility that the stability against battery swelling or rupture may decrease.

Method used

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  • Nonaqueous electrolytic solution and nonaqueous electrolytic solution secondary battery using the same
  • Nonaqueous electrolytic solution and nonaqueous electrolytic solution secondary battery using the same
  • Nonaqueous electrolytic solution and nonaqueous electrolytic solution secondary battery using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0323] Under a dry argon atmosphere, ethylene carbonate (hereinafter, EC), ethylmethyl carbonate (hereinafter, EMC) and diethyl carbonate (hereinafter, DEC) were mixed so as to be 30% by volume, 40% by volume, and 30% by volume, respectively. volume % to make LiPF 6 Dissolved in the non-aqueous solvent thus mixed, LiPF 6 The concentration was 1.2M, and 2% by mass of vinylene carbonate and 2% by mass of fluoroethylene carbonate were added. Further, 0.3% by mass of Compound 2-10 was added to prepare a non-aqueous electrolytic solution.

Embodiment 2-1

[0344] Under a dry argon atmosphere, ethylene carbonate (hereinafter, EC), ethylmethyl carbonate (hereinafter, EMC) and diethyl carbonate (hereinafter, DEC) were mixed so as to be 30% by volume, 40% by volume, and 30% by volume, respectively. volume % to make LiPF 6 Dissolved in the non-aqueous solvent thus mixed, LiPF 6 The concentration was 1.2M, and 2% by mass of vinylene carbonate, 2% by mass of fluoroethylene carbonate, and 1% by mass of adiponitrile were added. Furthermore, 0.3% by mass of Compound 2-10 was added to prepare a non-aqueous electrolyte solution. Except having used this non-aqueous electrolytic solution, it carried out similarly to Example 1-1, and produced the sheet-shaped battery.

Embodiment 3-1

[0354] Under a dry argon atmosphere, ethylene carbonate (hereinafter, EC), ethylmethyl carbonate (hereinafter, EMC) and diethyl carbonate (hereinafter, DEC) were mixed so as to be 30% by volume, 40% by volume, and 30% by volume, respectively. volume % to make LiPF 6 Dissolved in the non-aqueous solvent thus mixed, LiPF 6 The concentration was 1.2M, and 2% by mass of vinylene carbonate, 2% by mass of fluoroethylene carbonate, and 1% by mass of adiponitrile were added. Furthermore, 0.3% by mass of Compound 2-10 was added to prepare a non-aqueous electrolyte solution. Except having used this non-aqueous electrolytic solution, it carried out similarly to Example 1-1, and produced the sheet-shaped battery.

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Abstract

The present application provides a non-aqueous electrolytic solution and a non-aqueous electrolytic solution secondary battery using the non-aqueous electrolytic solution. The non-aqueous electrolytic solution can produce the following non-aqueous secondary battery, that is, when the battery is used in a high-temperature environment, the gas is suppressed A non-aqueous secondary battery is produced that improves the cycle characteristics while improving the remaining capacity of the battery, and is excellent in discharge load characteristics (high-rate discharge is possible). The application provides a non-aqueous electrolyte and a non-aqueous electrolyte secondary battery using the non-aqueous electrolyte, wherein the non-aqueous electrolyte is a non-aqueous electrolyte secondary battery equipped with a positive electrode and a negative electrode A non-aqueous electrolyte solution, the positive electrode has a positive active material capable of intercalating / deintercalating metal ions, and the negative electrode has a negative active material capable of intercalating / deintercalating metal ions, wherein the nonaqueous electrolytic solution contains Specific structure of bismaleimide compounds.

Description

technical field [0001] The present invention relates to a nonaqueous electrolytic solution and a nonaqueous electrolytic solution secondary battery using the electrolytic solution. Background technique [0002] With the rapid progress of electronic equipment, people's demand for higher capacity of secondary batteries is increasing, and non-aqueous electrolyte batteries such as lithium-ion secondary batteries with high energy density are widely used, and people are actively developing them. Research. [0003] An electrolyte used in a nonaqueous electrolyte battery is usually mainly composed of an electrolyte and a nonaqueous solvent. LiPF is being used as an electrolyte solution for lithium-ion secondary batteries 6 A non-aqueous electrolyte solution in which an electrolyte such as a cyclic carbonate is dissolved in a mixed solvent of a high permittivity solvent such as a cyclic carbonate and a low-viscosity solvent such as a chain carbonate. [0004] When the lithium ion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0567
CPCH01M10/052H01M2300/0025H01M10/0567C07D207/452Y02E60/10H01M10/0569H01M2300/0034H01G11/58H01M10/0525H01M10/0568H01M2300/004
Inventor 大桥洋一
Owner MITSUBISHI CHEM CORP
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