Non-aqueous electrolyte, and non-aqueous electrolyte cell using the same

A non-aqueous electrolyte and non-aqueous solvent technology, which is 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 charge and discharge efficiency of the first cycle have not been improved, and achieve good Film formation effect, good initial characteristics, and effect of suppressing gas generation

Active Publication Date: 2013-04-17
FUJIFILM WAKO PURE CHEM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Non-aqueous electrolyte, and non-aqueous electrolyte cell using the same
  • Non-aqueous electrolyte, and non-aqueous electrolyte cell using the same
  • Non-aqueous electrolyte, and non-aqueous electrolyte cell using the 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 OCH2 OSO 2 Cl] (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 H NMR are shown below.

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

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Abstract

To provide: a novel nonaqueous electrolyte solution which uses a methylene bissulfonate derivative, reduces the initial irreversible capacity of a battery, and improves battery characteristics such as cycle characteristics, electric capacity and storage characteristics; a method for producing the nonaqueous electrolyte solution; and a battery which uses the electrolyte solution. The present invention relates to the following <1>-<3>. <1> A nonaqueous electrolyte solution which contains the following (1)-(3). (1) A nonaqueous solvent which contains at least one ester selected from among cyclic carbonate esters, chain carbonate esters and cyclic carboxylic acid esters. (2) A lithium salt which can be dissolved as an electrolyte salt into the nonaqueous solvent. (3) A methylene bissulfonate derivative which is represented by general formula [1]. <2> A method for producing a nonaqueous electrolyte solution, which is characterized in that a lithium salt is dissolved in a nonaqueous solvent and then the methylene bissulfonate derivative is dissolved in the nonaqueous solvent. <3> A nonaqueous electrolyte battery which comprises (i) the nonaqueous electrolyte solution set forth in <1>, (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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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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