Ionic liquid additive-containing gel battery electrolyte

A technology of ionic liquid and colloidal batteries, which is applied in the direction of lead-acid batteries, etc., can solve the problems of poor starting performance at low temperature, short service life, serious self-discharge, etc., and achieve the effects of reducing short circuit, long service life and prolonging discharge time

Inactive Publication Date: 2011-02-09
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Colloidal battery refers to the battery that uses colloidal electrolyte as the medium instead of sulfuric acid as the medium. It is a new technology product in the 1990s. It mainly solves the long-term production pollution environment that common lead-acid batteries use liquid electrolytes, short service life, and self-discharge. Serious, highly corrosive, poor starting performance at low temperature, frequent charging, etc.

Method used

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  • Ionic liquid additive-containing gel battery electrolyte
  • Ionic liquid additive-containing gel battery electrolyte
  • Ionic liquid additive-containing gel battery electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] When preparing colloidal electrolyte, get 32% sulfuric acid, 59.97% water and 0.3‰ of 1-ethyl-3-methylimidazolium bisulfate ionic liquid ([BMIm][HSO 4 ]) The additive is placed in the polytetrafluoroethylene dispersion barrel and fixed on the high-speed disperser. After mixing the two evenly at a low speed, add 8% silica sol as a gelling agent, and disperse at a high speed for a certain period of time to obtain the colloidal sol , Immediately inject it into the battery as a colloidal electrolyte, place it until the glue is solidified, and then perform a charge and discharge test.

Embodiment 2

[0028] When preparing colloidal electrolyte, get 38% sulfuric acid, 55.98% water and 0.2‰ of 1-ethyl-3-methylimidazolium bisulfate ionic liquid ([BMIm][HSO 4 ]) The additive is placed in the polytetrafluoroethylene dispersion barrel and fixed on the high-speed disperser. After mixing the two evenly at a low speed, add 6% silica sol as a gelling agent, and disperse at a high speed for a certain period of time to obtain the colloidal sol , Immediately inject it into the battery as a colloidal electrolyte, place it until the glue is solidified, and then perform a charge and discharge test.

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Abstract

The invention discloses ionic liquid additive-containing gel battery electrolyte. The gel battery electrolyte comprises 5 to 10 weight percent of silica sol, 30 to 40 weight percent of sulfuric acid, 52 to 62 weight percent of water and 0.01 to 0.03 weight percent of 1-butyl-3-methylimidazole bisulfate ionic liquid. The electrolyte does not flow or acid does not overflow, the charging time is shortened, the discharging time is prolonged, the self-discharge is extremely low, the service life is prolonged, the electrolyte is easy and convenient to maintain, pure water generally needs be added for several times only and acid is not needed. In the production of a gel battery, the gel can be conveniently filled under normal pressure, has reliable performance and is safe to use.

Description

technical field [0001] The invention relates to a colloidal battery electrolyte, in particular to a colloidal battery electrolyte containing an ionic liquid additive to improve the electrochemical performance of the colloidal battery and improve the discharge capacity and discharge time of the colloidal battery. Background technique [0002] Colloidal battery refers to the battery that uses colloidal electrolyte as the medium instead of sulfuric acid as the medium. It is a new technology product in the 1990s. It mainly solves the long-term production pollution environment that common lead-acid batteries use liquid electrolytes, short service life, and self-discharge. Serious, corrosive, poor starting performance at low temperature, frequent charging and other shortcomings. The conductivity and viscosity of the colloidal electrolyte have an important impact on the quality of the colloidal battery. And it happens that these two points are also the key characteristic parameter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/10
CPCY02E60/126Y02E60/10
Inventor 李核刘何萍陈红雨黄贤伟
Owner SOUTH CHINA NORMAL UNIVERSITY
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