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Preparation method for high temperature battery positive electrode

A high-temperature battery and positive electrode technology, applied in the direction of the electrode of the primary battery, can solve the problems of reliability, stability and safety, etc., and achieve the effects of uniform discharge reaction process, improved discharge capacity, and uniform particle size

Inactive Publication Date: 2013-08-07
河南直通电子能源科技有限公司
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AI Technical Summary

Problems solved by technology

However, the maximum operating temperature of the existing common lithium thionyl chloride battery is only 85°C, so it cannot meet the requirements of reliable, stable and safe work in high temperature environment.

Method used

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Experimental program
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Embodiment Construction

[0024] A method for preparing a high-temperature battery positive electrode, comprising the following steps:

[0025] 1) Mixing: At room temperature, mix acetylene black: copper powder: alcohol: PTFE emulsion with a weight ratio of 1:0.08:8:0.08 evenly to obtain a paste;

[0026] 2) Shot blasting: Squeeze the evenly mixed paste with a granulator once, then throw the granules once with a shot blasting machine, and repeat this 2~3 times;

[0027] 3) Squeeze the carbon bag: extrude the thrown particles into a carbon bag with a carbon bag machine;

[0028] 4) Drying and fiberizing: Dry the carbon bag in a blast oven at 150°C for 10 hours to completely remove the alcohol in the carbon bag, and use a high-temperature tunnel at 280°C to start fibering. The speed of the conveyor belt in the high-temperature tunnel is 3cm / s. The carbon after the fiber is wrapped into a flocculent fiber;

[0029] 5) Pulverization and infiltration: The pulverized carbon packs ar...

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Abstract

The invention relates to a preparation method for a high temperature battery positive electrode, especially to a preparation method for a lithium thionyl chloride battery positive electrode. The preparation method for the high temperature battery positive electrode is characterized by comprising the following steps: 1) mixing; 2) shot blasting; 3) extrusion of a carbon bag; 4) drying and fiber making; 5) crushing and infiltration; 6) laying of a screen; 7) rolling; 8) fiber making; and 9) molding, wherein precision pressing is carried out on a carbon sheet according to batteries with different models so as to obtain appropriate process dimensions of the carbon sheet. The preparation method provided by the invention enables high temperature performance of a lithium thionyl chloride battery to be substantially improved.

Description

technical field [0001] The invention relates to a preparation method of a high-temperature battery positive electrode, in particular to a preparation method of a lithium thionyl chloride battery positive electrode. Background technique [0002] In recent years, with the rapid development of petroleum exploration and exploitation, electronic technology has been widely used in petroleum instruments and equipment. In the process of exploration and exploitation of underground resources such as petroleum, relevant instruments and equipment must be used. In the underground working environment, 150°C temperature often occurs Even in the extreme working environment close to 200°C, since the ordinary power supply cannot reach the underground, the detection equipment must use batteries that can withstand high temperatures as the main power supply. Therefore, the technical requirements for special batteries are getting higher and higher, and the demand is increasing. However, due t...

Claims

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Application Information

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IPC IPC(8): H01M4/08
CPCY02E60/12
Inventor 庄俊峰李军显冯喜兰秦镇钢许惠丽杨晓聪
Owner 河南直通电子能源科技有限公司
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