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Nonaqueous electrolytic solution and nonaqueous electrolytic solution battery using same

A non-aqueous electrolyte and non-aqueous solvent technology, applied in the direction of non-aqueous electrolyte batteries, non-aqueous electrolytes, secondary batteries, etc., can solve the problem that the initial characteristics such as the first cycle charge and discharge efficiency have not been improved, and achieve good Film formation effect, inhibition of free acid production, and good high-temperature storage characteristics

Inactive Publication Date: 2016-02-24
FUJIFILM WAKO PURE CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a lithium battery fabricated using an electrolytic solution containing such a sulfonate compound, compared with a case where no additive is added (no addition), the initial characteristics such as the first-cycle charge-discharge efficiency are hardly affected. improve such problems

Method used

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

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Embodiment

[0395] The present invention will be described in more detail with reference to synthesis examples, experimental examples, comparative experimental examples, comparative examples, and examples shown below, but the present invention is not limited to these examples.

Synthetic example

[0396] Synthesis example (methylene bissulfonate derivatives of the present invention and comparative compounds)

[0397] [Methylene bissulfonate of the present invention]

Synthetic example 1

[0398] Synthesis Example 1. Synthesis of Compound No.1 [Methylenebis(methanesulfonate)]

[0399]

[0400] In dimethyl carbonate (10 mL), at 55 ° C, the methylene bis (chlorosulfonate) [ClSO 2 OCH 2 OSO 2Cl] (1.5g, 6.1mmol) and pyridinium methanesulfonate (2.1g, 12.0mmol) were reacted with stirring for 3 hours. After the reaction was terminated, the precipitated pyridinium chlorosulfonate salt was filtered off, and concentrated under reduced pressure to obtain a light brown solid. After adsorption treatment with activated carbon, purification was carried out by recrystallization to obtain the target methylenebis(methanesulfonate) in a yield of 48% (0.6 g, 2.9 mmol). 1 The measurement results of HNMR are shown below.

[0401] 1 HNMR (CD 3 CN); δ=5.80(s,2H),3.19(s,6H)

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Abstract

The present invention provides a novel non-aqueous electrolytic solution, its manufacturing method and a battery using the electrolytic solution. The non-aqueous electrolytic solution uses methylene bissulfonate derivatives, which reduces the initial irreversible capacity of the battery, and further Battery characteristics such as cycle characteristics, capacity, and storage characteristics have been improved. The present invention relates to inventions of the following <1> to <3>. <1> A non-aqueous electrolytic solution comprising the following (1) to (3): (1) containing at least 1 kind of non-aqueous solvent; (2) a lithium salt soluble in the non-aqueous solvent, and the lithium salt is used as an electrolyte salt; (3) a methylene bissulfonate derivative represented by the general formula [1]. <2> A method for producing a non-aqueous electrolyte solution, comprising dissolving a lithium salt in a non-aqueous solvent, followed by dissolving the methylene bissulfonate derivative. <3> A nonaqueous electrolytic solution battery comprising (i) the nonaqueous electrolytic solution described in <1> above, (ii) a negative electrode, (iii) a positive electrode, and (iv) a separator.

Description

technical field [0001] The present invention relates to a novel non-aqueous electrolytic solution, its manufacturing method and a non-aqueous electrolytic solution battery using the electrolytic solution. The non-aqueous electrolytic solution uses methylene bissulfonate derivatives, which can reduce the initial stage of the battery. Irreversible capacity can further improve battery characteristics such as cycle characteristics, capacitance, and storage characteristics. Background technique [0002] In recent years, with the spread of various small portable electronic devices such as portable electronic terminals represented by mobile phones and notebook computers, secondary batteries as power sources for these have played an important role. [0003] Lithium secondary batteries are widely used as power sources for electronic devices such as mobile phones and notebook personal computers, power sources for electric vehicles, and power storage, and are mainly composed of a posit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0567H01M2/16H01M4/38H01M4/48H01M4/485H01M4/505H01M4/525H01M4/58H01M4/587H01M10/052H01M10/0568H01M10/0569
CPCH01M10/0566H01M10/0567H01M2300/0025H01M10/0525H01M2300/0028Y02E60/10H01M4/38H01M4/485H01M4/505H01M4/525H01M4/587H01M10/052H01M10/0568H01M10/0569H01M10/056Y02T10/70
Inventor 冈本训明角野元重绵引勉大久保幸辉池田树子
Owner FUJIFILM WAKO PURE CHEM CORP
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