Solvents for electrolytes of electrochemical devices

An electrolyte and electrochemical technology, which is applied in the field of solvents for the electrolyte of electrochemical devices, can solve the problem of not being able to sufficiently reduce sulfur dioxide for a long time, and achieve the effect of stable chemical properties

Inactive Publication Date: 2019-03-26
SUMITOMO SEIKA CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] The solvent produced by the method disclosed in Patent Document 6 has the problem that although the amount of sulfur dioxide can be reduced for a short time at high temperature, the amount of sulfur dioxide cannot be sufficiently reduced for a long time

Method used

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  • Solvents for electrolytes of electrochemical devices
  • Solvents for electrolytes of electrochemical devices
  • Solvents for electrolytes of electrochemical devices

Examples

Experimental program
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Effect test

Embodiment 1

[0053] A solvent for an electrochemical device electrolyte was prepared by mixing 80 parts by mass of sulfolane as a cyclic sulfone compound, 20 parts by mass of ethylmethyl sulfone as a chain alkyl sulfone compound, and 0.1 part by mass of monoethanolamine.

Embodiment 2

[0055] Except having mixed 20 mass parts of ethyl isopropyl sulfones instead of ethyl methyl sulfone as a chain alkyl sulfone compound, it carried out similarly to Example 1, and prepared the solvent for electrochemical device electrolytes.

Embodiment 3

[0057] Except having mixed 0.1 mass part of 4-tert-butylcatechol instead of monoethanolamine, it carried out similarly to Example 1, and prepared the solvent for electrochemical device electrolyte solutions.

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Abstract

The object of the present invention is to provide a solvent for an electrolyte of an electrochemical device, which has stable chemical properties for a long time at high temperature and has a stable liquid state at low temperature. The present invention is an electrochemical method containing a cyclic sulfone compound represented by the following formula (1), a chain alkyl sulfone compound represented by the following formula (2), an organic amine compound and / or 4-tert-butylcatechol Solvent for device electrolyte. In formula (1), R represents a hydrogen atom, or a linear or branched alkyl group having 1 to 6 carbon atoms. In formula (2), R 1 , R 2 Represents a linear or branched C1-5 alkyl group, each independently, and may be the same or different from each other.

Description

technical field [0001] The invention relates to a solvent for electrolyte solution of electrochemical devices used in electrochemical devices such as capacitors. Background technique [0002] In recent years, as devices used in power supplies for electronic equipment, power supplies for power storage, power supplies for automobiles, etc., which have been continuously improved in performance and miniaturization, electrochemical devices such as various secondary batteries and aluminum electrolytic capacitors with high energy density can be obtained. Devices are in the spotlight. [0003] In general, examples of solvents for electrolyte solutions used in these electrochemical devices include cyclic carbonates such as propylene carbonate, ethylene carbonate, and diethyl carbonate, chain carbonates, γ-butyrolactone, and the like. And derivatives based on them. For example, Patent Documents 1 and 2 disclose electrolytic capacitors using γ-butyrolactone. [0004] In addition, in...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H01G11/60H01M10/0569
CPCH01G11/60H01M10/052H01G9/035H01M10/0569H01M10/0567H01M2300/0037Y02E60/10H01G11/62H01M2300/0028Y02E60/13
Inventor村上真耶大山俊治桧山武宽
OwnerSUMITOMO SEIKA CHEM CO LTD