High power silicon crystal electrolyte and its preparation method

A silicon dioxide and electrolyte technology, applied in the direction of circuits, conductive materials, conductive materials, etc., can solve the problems of positive electrode grid corrosion deformation, softening and falling off of active materials, battery acid mist discharge, etc., to achieve increased plate surface pressure, strong absorption The ability to pay antimony and the effect of improving the utilization rate

Active Publication Date: 2008-04-16
浙江天地之光电池制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The obvious defects of traditional lead-acid batteries: (1) The battery life is short due to corrosion and deformation of the positive grid, softening and falling off of the active material, irreversible sulfation, early capacity loss, and thermal runaway; (2) The battery has acid during charging. (3) Acid overflow and corrode equipment to pollute the environment; (4) Weight specific energy is low; (5) Low temperature performance is poor, etc.
However, the colloidal electrolyte also brings out new problems of high internal resistance and low specific energy of the battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 10% sodium silicate with a silicon dioxide content of 21% (weight, the same below) and 90% dilute sulfuric acid with a concentration of 45% are used as base materials. Add 0.8% of analytical grade lithium hydroxide, 0.1% of vanillin, 0.3% of analytical grade glycerol, and 0.0011% of cobalt sulfate to the base material. Stir with a mixer with a rotation speed of 1400-1500 rpm for 30 minutes, and the obtained ultra-fine silicon crystal electrolyte is only suitable for small-sized glass fiber separators tightly assembled: such as 2 small-rate 10-20A for electric bicycles. When the battery is used on other separators and large-capacity batteries, incomplete solidification will occur.

Embodiment 2

[0019] 30% of sodium silicate with a silicon dioxide content of 26% and 70% of dilute sulfuric acid with a concentration of 50% are used as base materials. Add 1.5% of analytically pure lithium hydroxide, 0.2% of vanillin, and 0.001% of cobalt sulfate to the base material. Stir for 60 minutes with a special mixer with a rotation speed of 1400-1500 rpm. The obtained ultrafine particle silicon crystal electrolyte is only suitable for traction batteries with loosely assembled PVC separators, and other separators and assembled tightly. When the battery is used, there will be difficulty in perfusion and serious shortage of electrolytic perfusion.

Embodiment 3

[0021] 20% of sodium silicate with a silicon dioxide content of 31% and 80% of dilute sulfuric acid with a concentration of 55% are used as base materials. Add 1.5% of lithium hydroxide, 0.2% of hydrogen blocking agent vanillin, 0.8% of analytical grade glycerol, and 0.0008% of cobalt sulfate, accounting for 1.5% of the base material. Stir for 60 minutes with a mixer with a special rotating speed of 1400 to 1500 rpm. The obtained ultrafine particles are a kind of silicon dioxide crystalline electrolyte, which can be widely used in various separators and lead-acid batteries with various assembly pressures, and can improve and improve various performances of various lead-acid batteries. .

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Abstract

Disclosed electrolyte is prepared by mixing following components: 10%-30% Wt. sodium silicate solution 70%-90%Wt. dilute sulfuric acid as base metal, lithium hydroxide added 0.8-1.5%of weight of the said base metal, agent of blocking agent added 0.1-0.2% weight of the said base metal, and cobalt sulphate 0.0008-0.0011% of weight of the said base metal. The disclosed electrolyte possesses features of environmental protection, high energy and free from maintenance.

Description

technical field [0001] The invention relates to the storage battery manufacturing industry, in particular to an environment-friendly neutral particle silicon dioxide crystalline electrolyte, referred to as a silicon crystal electrolyte and a preparation method thereof. Background technique [0002] Sulfuric acid electrolyte has been produced as the electrolyte of lead-acid batteries for more than 100 years, and its manufacturing technology and performance have also been continuously developed and improved. Among all kinds of batteries, sulfuric acid electrolyte has been widely used in batteries due to its easy availability and low price. At the same time, due to its strong corrosiveness, pollution of the environment, and its shortcomings as a battery electrolyte, it is easy to leak, etc., which affects its use in many aspects, especially when liquid sulfuric acid is used as electrolyte. The chemical reaction speed of the acid battery has obviously become extremely slow. It ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/10H01M10/08H01B1/00
CPCY02E60/126Y02E60/10
Inventor 陈建科
Owner 浙江天地之光电池制造有限公司
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