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Colloid storage battery electrolyte and preparation method thereof

A colloidal battery and electrolyte technology, applied in the direction of lead-acid battery, lead-acid battery construction, final product manufacturing, etc., can solve the problems of small capacity and large internal resistance, and achieve stable and controllable process, low cost and simple process Effect

Inactive Publication Date: 2017-02-15
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, colloidal lead-acid batteries also have their own significant disadvantages, such as the relatively large internal resistance and small capacity of colloidal lead-acid batteries.

Method used

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  • Colloid storage battery electrolyte and preparation method thereof
  • Colloid storage battery electrolyte and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 12.48mL of water into a 50mL small beaker, and weigh 1.8791g of fumed silica into the small beaker to make a fumed silica hydrosol (ultrasound if necessary). Dilute 98% concentrated sulfuric acid with deionized water into an aqueous solution of sulfuric acid with a specific gravity of 1.37, let it stand to cool to room temperature and perform freezing treatment. Add 20mL of sulfuric acid aqueous solution with a specific gravity of 1.37 into the fumed silica hydrosol and mix thoroughly. Weigh polyvinylpyrrolidone accounting for 0.04% of the total mass of the gel battery electrolyte, add it to the above mixed solution, stir and mix thoroughly, and make the gel battery electrolyte.

Embodiment 2

[0023] Weigh 12.48mL of water into a 50mL small beaker, and weigh 1.8791g of fumed silica into the small beaker to make a fumed silica hydrosol (ultrasound if necessary). Dilute 98% concentrated sulfuric acid with deionized water into an aqueous solution of sulfuric acid with a specific gravity of 1.37, let it stand to cool to room temperature and perform freezing treatment. Add 20mL of sulfuric acid aqueous solution with a specific gravity of 1.37 into the fumed silica hydrosol and mix thoroughly. Weigh polyvinylpyrrolidone accounting for 0.08% of the total mass of the gel battery electrolyte, add it to the above mixed solution, stir and mix thoroughly, and make the gel battery electrolyte.

Embodiment 3

[0025] Weigh 12.48ml of water into a 50ml small beaker, and weigh 1.8791g of fumed silica into the small beaker to make a fumed silica hydrosol (ultrasound if necessary). Dilute 98% concentrated sulfuric acid with deionized water into an aqueous solution of sulfuric acid with a specific gravity of 1.37, let it stand to cool to room temperature and perform freezing treatment. Add 20ml of sulfuric acid aqueous solution with a specific gravity of 1.37 into the fumed silica hydrosol and mix thoroughly. Weigh polyvinylpyrrolidone accounting for 0.12% of the total mass of the electrolyte of the colloidal battery, add it to the above mixed solution, stir and mix thoroughly to prepare the electrolyte of the colloidal battery.

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Abstract

The invention provides a colloid storage battery electrolyte and a preparation method thereof, and belongs to the technical field of colloid storage batteries. Polyvinylpyrrolidone is taken as a colloid stabilizer, lithium sulfate is taken as an additive and a phosphoric acid is taken as an auxiliary electrolyte; and performance test is carried out on the electrolyte by changing the content of various components to find out the most appropriate proportions: the polyvinylpyrrolidone accounts for 0.12% of total mass of the colloid storage battery electrolyte, the lithium sulfate accounts for 0.8% of total mass of the colloid storage battery electrolyte and the phosphoric acid accounts for 0.9% of total mass of the colloid storage battery electrolyte. The disadvantage of relatively high internal resistance of the colloid battery is improved, the capacity of the battery is improved and the service life of the battery is prolonged.

Description

technical field [0001] The invention belongs to the technical field of colloidal accumulators, in particular to the technical field of production of electrolytic solution of colloidal accumulators. Background technique [0002] Gel lead-acid battery is a new type of battery developed on the basis of traditional lead-acid batteries, also known as "maintenance-free batteries". The electrolyte composition of conventional colloidal batteries is: fumed silica accounts for 4-6% of the total mass of colloidal battery electrolyte, sulfuric acid accounts for 36-40% of the total mass of colloidal battery electrolyte, and the rest is deionized water. [0003] Compared with other lead-acid batteries, the main difference between gel lead-acid batteries is the electrolyte. The gelling agent is added to the electrolyte of the colloidal battery. When the fumed silica is dispersed in the sulfuric acid solution, the independent silicon hydroxyl groups are easily connected to each other by hy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/08H01M10/10H01M10/12
CPCH01M10/08H01M10/10H01M10/12Y02E60/10Y02P70/50
Inventor 刘天晴白云卜雅婷汪涛周国强林海鹏
Owner YANGZHOU UNIV
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