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Anode of high-temperature lithium thionyl chloride battery and its making method

A lithium thionyl chloride battery and positive electrode technology, which is applied in electrode manufacturing, active material electrodes, etc., can solve the problems of high saturated vapor pressure and low boiling point, and achieve the effect of large pulse current

Inactive Publication Date: 2008-01-09
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively low melting point of metallic lithium (at 182°C), and the fact that the electrolyte composition commonly used in lithium batteries contains organic or inorganic solvents, its saturated vapor pr

Method used

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  • Anode of high-temperature lithium thionyl chloride battery and its making method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The positive electrode preparation method of high temperature lithium thionyl chloride battery:

[0029] The total process: kneading powder→molding→drying→foaming

[0030] 1) and powder:

[0031] Take materials according to the formula, positive electrode formula:

[0032] Acetylene black (battery grade): 10g;

[0033] PTFE emulsion (60% water emulsion, density 1.5g / cm 3 ): 1ml;

[0034] Isopropanol (analytical pure): 84ml;

[0035] Glass fiber silk material: 0.45g (weight ratio 4%), wherein the diameter of glass fiber silk material is 0.1mm, and length is 4mm,

[0036] First weigh acetylene black for use, then measure polytetrafluoroethylene emulsion and isopropanol respectively, mix them evenly, add them to acetylene black, stir evenly, weigh glass fiber filaments and add them to the mixture, mix evenly to get positive electrode paste thing;

[0037] 2) Molding:

[0038] Put the uniformly mixed positive electrode paste into the extruder, and squeeze out the po...

Embodiment 2

[0050] Positive electrode formula:

[0051] Acetylene black (battery grade): 10g;

[0052] PTFE emulsion (60% water emulsion, density 1.5g / cm 3 ): 1ml;

[0053] Isopropanol (analytical pure): 84ml;

[0054] Glass fiber filament material: 1.16g (9.6% by weight), wherein the glass fiber filament material has a diameter of 0.15mm and a length of 3mm.

[0055] Fabrication of ER34615 experimental high-temperature lithium thionyl chloride battery.

[0056] The high-temperature ER34615 experimental battery is discharged at a constant current of 30mA to 2.0V at a temperature of 175±2°C, and the discharge capacity is 12.37Ah.

[0057] Others are all the same as in Example 1.

Embodiment 3

[0059] Positive electrode formula:

[0060] Acetylene black (battery grade): 10g;

[0061] PTFE emulsion (60% water emulsion, density 1.5g / cm 3 ): 1ml;

[0062] Isopropanol (analytical pure): 84ml;

[0063] Glass fiber filament material: 1.42g (11.5% by weight), wherein the glass fiber filament material has a diameter of 1mm and a length of 6mm.

[0064] Fabrication of ER251000 experimental high-temperature lithium thionyl chloride battery.

[0065] The high-temperature ER251000 experimental battery is discharged at a constant current of 50mA to 2.0V at a temperature of 175±2°C, and the discharge capacity is 8.56Ah.

[0066] Others are all the same as in Example 1.

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Abstract

The invention is concerned with the positive electrode of the lithium thinly chloride batteries and it's making method with the carbon positive electrode component as the acetylene black 10g, the polyetrafluoroethylene emulsion 1ml, the isopropyl alcohol positive electrode carbon compound 84ml, and the fiberglass material. The steps are: 1) powder mixing; 2) forming; 3) drying 4) frothing. The advantages of the invention are: it resolves the transmission resistance of the response ion and the ionic charge of the multi-hole electrode, changes the active particle charge transfer complexion on the surface of the carbon, simultaneously, the surface area of the electrode, and effects on the electrolyte gasification degree in high temperature to bare 150 deg.C to 200 deg.C high temperature working environment and fulfill other requests of the exploration instrument and the performance capability, which is not only able to work under high temperature but also under the condition of -40deg.C ( 40 deg.C below 0 deg.C) for providing great pulse current.

Description

technical field [0001] The invention relates to a lithium thionyl chloride battery, in particular to a positive electrode of a high-temperature lithium thionyl chloride battery and a preparation method thereof. Background technique [0002] With the development of the global economy, the demand for energy such as oil and natural gas continues to expand, which stimulates the exploration and exploitation of underground resources such as oil. In the process of exploration and exploitation of underground resources such as oil, people need to further understand and master the geological structure and resource reserves in the deep strata, so they must use relevant scientific exploration instruments and equipment. Since ordinary electric power cannot reach underground, these scientific exploration instruments and equipment must use batteries that can withstand high temperatures as the main power supply. In the working environment such as underground, there are often harsh working ...

Claims

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Application Information

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IPC IPC(8): H01M4/02H01M4/04
CPCY02E60/12Y02E60/10
Inventor 王圣平华萍吴金平皮振邦
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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