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Lithium/pyrite battery

An iron disulfide battery, iron disulfide technology, applied in the electrodes of primary batteries, battery pack components, non-aqueous electrolyte batteries, etc., can solve the problem of short storage life of semi-sealed batteries, easy aging of insulating sealing rings, and electrolyte penetration. Liquid leakage and other problems, to achieve the effect of improving the working characteristics of high current, small physical internal resistance, and reducing the speed of chemical reaction

Inactive Publication Date: 2008-02-27
CNNC JIANZHONG NUCLEAR FUEL
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AI Technical Summary

Problems solved by technology

The insulating sealing ring in the middle is elastic and can only play a sealing effect to a certain extent. When the conditions are harsh, electrolyte seepage and leakage are prone to occur, and the insulating sealing ring is prone to aging after a long time, so it cannot play a good sealing role.
Therefore, the storage life of semi-sealed batteries is relatively short

Method used

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  • Lithium/pyrite battery
  • Lithium/pyrite battery

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Embodiment Construction

[0022] The lithium / iron disulfide battery cathode composition and manufacturing method are as follows: 85% iron disulfide, 3.5% acetylene black, 3.5% graphite, 8% polyvinylidene fluoride are mixed, stirred for 2 hours to form a slurry, and the aluminum foil collector Put on the coating machine, adjust the height of the front and rear shutters of the coating machine, the temperature of the drying box of the coating machine is 140°C, and the coating speed is 15Hz to ensure that the thickness deviation of the coated pole piece is about 10 microns, and the coating thickness is about 300 μm. Density 48mg / cm 2 . Set the temperature of each box area, coating speed, tension control and other parameters. The prepared and stirred iron disulfide slurry is added into a material tank, coated, and dried in an oven.

[0023] The battery shell 2 can be a stainless steel shell; the safety vent device 5 at the bottom of the shell can safely vent the battery without burning or exploding under ...

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Abstract

This invention relates to a kinds of lithium / ferrous dioxide battery comprising: a positive pole, a negative pole and electrolytic solution system. Said positive pole is made of high purity lithium, and said negative pole is made of: ferrous dioxide 80-90 parts, acetylene-black 2.5-5 parts, graphite 2.5-5 parts, polyvinylidene fluoride 5-10 parts. Due to the production of pole sheet is under non-water condition, so the oxygenolysis of said ferrous dioxide is reduced with increasing electric property of the product. The battery with coated pole sheet gives less physical internal resistance, so it has the improved property of large current work. The thin film pole sheet can reduce current intensity per unit area, lower chemical reaction speed in the pole sheet, resulting through reaction, increasing the utilization rate of active substance of ferrous dioxide.

Description

technical field [0001] The invention relates to a disposable lithium battery, in particular to a lithium / iron disulfide battery. Background technique [0002] At present, disposable lithium batteries mainly include lithium / sulfur dioxide, lithium / thionyl chloride, lithium / manganese dioxide batteries, etc. Since lithium / iron disulfide batteries can increase the utilization rate of iron disulfide active materials, improve the high-current discharge characteristics, and thus improve the storage life of batteries, the production of lithium / iron disulfide batteries has been gradually carried out. [0003] Lithium / iron disulfide batteries reported at this stage generally use the film rolling method to make cathodes. The positive electrode active material iron disulfide, conductive agent, PTFE emulsion, and deionized water are mixed and stirred evenly in proportion and poured into the material tray for drying. After the baked material is added with an organic dispersant and soften...

Claims

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Application Information

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IPC IPC(8): H01M4/06H01M4/08H01M6/14H01M2/02H01M2/04H01M50/102H01M50/147
CPCY02E60/12
Inventor 赵平卓云毛刚刘道忠张君
Owner CNNC JIANZHONG NUCLEAR FUEL
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