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Manufacturing method of lithium/thionyl chloride battery electrolyte material

The technology of a thionyl chloride battery and its manufacturing method, which is applied in the field of batteries, can solve the problems of weakening the performance of lithium/thionyl chloride batteries, etc., achieve the improvement of voltage hysteresis, simple production process, and good resistance to thionyl chloride passivation Effect

Inactive Publication Date: 2012-10-03
SUZHOU JINKEFA LITHIUM BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of the above methods can improve certain performances of lithium / thionyl chloride batteries to a certain extent, but some of them weaken the other properties of lithium / thionyl chloride batteries at the cost of "sacrificing" the capacity of lithium / thionyl chloride batteries. some performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A kind of preparation method of lithium / thionyl chloride battery electrolyte material, comprises the steps:

[0017] a. Measurement: In a dry environment with a relative humidity of ≤1%, weigh 16300g of thionyl chloride, 3160g of lithium tetrachloroaluminate, 180g of calcium chloride and 15g of metal lithium foil for water removal;

[0018] b. Operation: In a dry environment with a relative humidity of ≤1%, add measured thionyl chloride, lithium tetrachloroaluminate, calcium chloride and metal lithium foil into a flat-bottomed glass bottle in sequence, among which calcium chloride The amount of addition should be saturated in the lithium / thionyl chloride battery electrolyte, and then the materials are stirred for 6 hours with a magnetic stirrer, and the finished product is obtained after filtering the residual lithium foil and the reaction residue.

Embodiment 2

[0020] A kind of preparation method of lithium / thionyl chloride battery electrolyte material, comprises the steps:

[0021] a. Measurement: In a dry environment with a relative humidity of ≤1%, weigh 16300g of thionyl chloride, 2640g of lithium tetrachloroaluminate, 200g of calcium chloride and 15g of metal lithium foil for water removal;

[0022] b. Operation: In a dry environment with a relative humidity of ≤1%, add measured thionyl chloride, lithium tetrachloroaluminate, calcium chloride and metal lithium foil into a flat-bottomed glass bottle in sequence, among which calcium chloride The amount added should reach saturation in the lithium / thionyl chloride battery electrolyte, and then the materials are stirred with a magnetic stirrer for 4 hours, and the residual lithium foil and reaction residue are filtered to obtain the finished product.

Embodiment 3

[0024] A kind of preparation method of lithium / thionyl chloride battery electrolyte material, comprises the steps:

[0025] a. Measurement: In a dry environment with a relative humidity of ≤1%, weigh 16300g of thionyl chloride, 2110g of lithium tetrachloroaluminate, 200g of calcium chloride and 12g of metal lithium foil for water removal;

[0026] b. Operation: In a dry environment with a relative humidity of ≤1%, add measured thionyl chloride, lithium tetrachloroaluminate, calcium chloride and metal lithium foil into a flat-bottomed glass bottle in sequence, among which calcium chloride The amount of addition should be saturated in the lithium / thionyl chloride battery electrolyte, and then the materials are stirred for 6 hours with a magnetic stirrer, and the finished product is obtained after filtering the residual lithium foil and the reaction residue.

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Abstract

The invention relates to a manufacturing method of a lithium / thionyl chloride battery electrolyte material, which comprises the following steps: proportioning and metering thionyl chloride, lithium aluminum tetrachloride, calcium metal halide, and metal lithium foil according to a mass ratio of 1:0.09-0.19:0.013-0.20:0.001-0.002 in dry environment with a relative humidity of not more than 1%; orderly adding the metered thionyl chloride, lithium aluminum tetrachloride, calcium metal halide, and metal lithium foil into a preparation container, wherein the calcium metal halide is added to reach saturation in the lithium / thionyl chloride battery electrolyte, stirring the materials for 4-8 hours, and filtering residual lithium foil and reaction residues to obtain the finished product. The invention provides the manufacturing method of a lithium / thionyl chloride battery electrolyte material which can improve the voltage delay performance of lithium / thionyl chloride batteries and can be used under conditions with a low temperature and medium-high rate discharge.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method for preparing an electrolyte material for a lithium / thionyl chloride battery. Background technique [0002] Lithium / thionyl chloride (Li / SOCl 2 ) battery is a lithium as an anode, carbon as a cathode carrier, anhydrous lithium tetrachloroaluminate thionyl chloride (SOCl 2 ) solution as the lithium battery electrolyte. Lithium / thionyl chloride batteries have the characteristics of high specific energy, large specific power, stable discharge voltage, and long storage life. They are widely used in military and civilian industries such as aerospace, underwater weapons, navigation equipment, geological exploration, and instrumentation. application. Lithium / thionyl chloride battery is currently the battery with the highest specific energy and specific power in the battery field. [0003] The main problems of lithium / thionyl chloride batteries are voltage hysteresis and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M10/0563
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 汪沣钱国珠肖辉汪以道
Owner SUZHOU JINKEFA LITHIUM BATTERY
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