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Cathode carrier of lithium thionyl chlorine cell

A carrier and cathode technology, applied in the field of electrochemistry, can solve the problems such as the need to improve the liquid absorption effect, the poor electrical conductivity of the cathode carrier carbon black material, and the small porosity, so as to achieve the liquid absorption effect and the improvement of liquid fluidity, and the texture is soft and fluffy. , the effect of increasing porosity

Inactive Publication Date: 2005-08-03
武汉孚特电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its disadvantage is that the conductivity of the cathode carrier carbon black material is poor, the material is first dried at low temperature, and then foamed, its porosity is small, and the liquid absorption effect needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] For the cathode carrier for high-power lithium sub-battery, take 600 grams of acetylene black (battery grade) and 100 grams of electrolytic copper powder (200 mesh) with an electronic balance with an accuracy value of 0.1 grams. Measure 60-130 grams of 60% polytetrafluoroethylene emulsion (the amount varies with the change of ambient temperature), pour it into a clean stainless steel bucket, and then measure 8000 grams of deionized water and 200 grams of absolute ethanol (analytical pure) , stir well. Add acetylene black and stir by hand or with a mixer. When all the acetylene black is soaked into a slurry, sprinkle the electrolytic copper powder evenly on the surface of the slurry and stir well until the red electrolytic copper powder is no longer visible. The stirring time of the slurry is about 40-60 minutes, so that the slurry is evenly mixed.

[0028] Pile the reconciled slurry into a 400mm×600mm enamel tray with a stacking thickness of 60-80mm, put it in an elect...

Embodiment 2

[0031] High-capacity lithium sub-battery cathode carrier, weigh 60 grams of acetylene black (battery grade) and 4.8 grams of electrolytic copper powder (200 mesh) with an electronic balance with an accuracy value of 0.1 grams. Measure 5-10 grams of 60% polytetrafluoroethylene emulsion (with the change of ambient temperature, the dosage is different), pour it into a clean large mortar, then measure 400 grams of absolute ethanol (analytical grade), and stir well . Add acetylene black and stir with a grinding rod. When all the acetylene black is soaked in the liquid, sprinkle the electrolytic copper powder evenly on the surface of the mixture, and stir fully until the red electrolytic copper powder is no longer visible. Stir the entire mixture with a grinding rod. Slurry for 5-10 minutes to mix the raw materials evenly. Clean the extruder, fix it on the workbench, install the mold with the corresponding diameter, put the positive electrode material in the extruder, and extrude t...

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Abstract

This invention relates to a Li sub-battery cathode carrier. Composition and content of the slurry include 3-9 acetylene black, 0.2-1.5 Cu-electrolyte powder and 20-120 adhesives. The prepared-slurry is pressed to format or stacked on an under-pan to be caked and foamed for at least 15h under 180deg.C-200deg.C to increase its mechanical structure performance of the cathode carrier.

Description

technical field [0001] The invention relates to the field of electrochemistry, more specifically it relates to a cathode carrier of a lithium thionyl chloride battery (referred to as a lithium sub-battery). technical background [0002] Due to its high specific energy, high voltage, wide temperature range, and long storage life, lithium-ion batteries have been widely used in computer, instrumentation, communication, medical and other fields. Since the lithium sub-battery uses a liquid cathode, the cathode carrier that stores the cathode liquid has a great influence on the performance of the battery. At present, the cathode carrier of lithium sub-battery is mostly made of acetylene black. Chinese Patent Publication No. CN1081285, published on January 26, 1994, the title of invention is the patent application of "Catalytic cathode of liquid cathode lithium battery", which discloses a The nickel matrix with three-dimensional space is used as the conductive tube frame, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/66
CPCY02E60/12Y02E60/10
Inventor 段金荣王党辉
Owner 武汉孚特电子科技有限公司
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