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A kind of preparation method of cathode carrier of lithium thionyl chloride battery

A lithium thionyl chloride battery and cathode technology, applied in the direction of electrode carrier/collector, battery electrode, positive electrode, etc., can solve the problems of increasing the conductivity of the cathode carrier, maintaining, and the cathode cannot meet high-current discharge or high-current pulse , to achieve the effect of convenient measurement process control, simple production process, and favorable mechanization

Inactive Publication Date: 2019-11-08
CHENGDU JIANZHONG LITHIUM BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art, and to provide a preparation method for the cathode carrier of a lithium thionyl chloride battery. Combined together, it maintains the porous carbon form characteristics formed in the carbon fiberization process, increases the conductivity of the cathode carrier, and solves the technical problem that the cathode in the prior art cannot meet high-current discharge or high-current pulse

Method used

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  • A kind of preparation method of cathode carrier of lithium thionyl chloride battery
  • A kind of preparation method of cathode carrier of lithium thionyl chloride battery
  • A kind of preparation method of cathode carrier of lithium thionyl chloride battery

Examples

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Effect test

Embodiment 1

[0028] A preparation method for lithium thionyl chloride battery cathode carrier, comprising the steps of:

[0029] (1) Weighing and measuring: acetylene black, isopropanol, polytetrafluoroethylene emulsion with a concentration of 60%, anionic surfactant and deionized water in sequence according to the mass ratio of 71:2:4:2:20 Prepare materials;

[0030] (2) Preparation of paste: Add deionized water and isopropanol into the mixer barrel according to the measurement, and stir for 2 minutes; add anionic surfactant, and stir for 4 minutes; add acetylene black, and stir for 40 minutes; the concentration is 60 % polytetrafluoroethylene emulsion, stirred for 4 minutes to obtain paste;

[0031] (3) Dewatering and fibrosis: Take out the paste and transfer it to a stainless steel tray. The thickness of the paste is controlled at 5mm, and sent to the blast oven for dewatering and fibrosis. The temperature of the blast oven is controlled at 180°C and the time is controlled at 8 hours,...

Embodiment 2

[0036] A preparation method for lithium thionyl chloride battery cathode carrier, comprising the steps of:

[0037] (1) Weighing and measuring: Acetylene black, isopropanol, polytetrafluoroethylene emulsion with a concentration of 60%, anionic surfactant and deionized water are sequentially mixed according to the mass ratio of 76:5:6:4:20 Prepare materials;

[0038] (2) Preparation of paste: Add deionized water and isopropanol into the mixer barrel according to the measurement, and stir for 4 minutes; add anionic surfactant, and stir for 4 minutes; add acetylene black, and stir for 60 minutes; the concentration is 60 % polytetrafluoroethylene emulsion, stirred for 6 minutes to obtain paste;

[0039] (3) Dewatering and fibrosis: Take out the paste and transfer it to a stainless steel tray. The thickness of the paste is controlled at 80mm, and it is sent to the blast oven for dewatering and fibrosis. The temperature of the blast oven is controlled at 240°C and the time is contr...

Embodiment 3

[0044] A preparation method for lithium thionyl chloride battery cathode carrier, comprising the steps of:

[0045] (1) Weighing and measuring: Acetylene black, isopropanol, polytetrafluoroethylene emulsion with a concentration of 60%, anionic surfactant and deionized water are sequentially mixed according to the mass ratio of 73:4:5:6:20 Prepare materials;

[0046] (2) Preparation of paste: Add deionized water and isopropanol into the mixer barrel according to the measurement, and stir for 6 minutes; add anionic surfactant, and stir for 4 minutes; add acetylene black, and stir for 50 minutes; the concentration is 60 % polytetrafluoroethylene emulsion, stirred for 5 minutes to obtain paste;

[0047] (3) Dewatering and fibrosis: Take out the paste and transfer it to a stainless steel tray. The thickness of the paste is controlled at 65mm, and it is sent to the blast oven for dewatering and fibrosis. The temperature of the blast oven is controlled at 200°C and the time is contr...

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Abstract

The invention discloses a preparation method of a lithium thionyl chloride battery cathode carrier. The preparation method comprises the following steps: (1) weighing and metering: (2) paste preparation; (3) water removal and fibrillation; (4) crushing and drying; and (5) layered punching. In a preparation process, flocculant particles and a metal collecting plate are tightly combined together by means of a punching process, so that the porous carbon characteristic formed in the carbon fibrillation process is kept, the conducting property of the cathode carrier is enhanced, and the technical problem that in the prior art, the cathode cannot meet large current discharge or large current pulse is solved.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a preparation method for a lithium thionyl chloride battery cathode carrier. Background technique [0002] Lithium / thionyl chloride (Li / SOCl 2 ) battery is a lithium anode, porous carbon as a cathode carrier, anhydrous lithium tetrachloroaluminate (LiAlCl 4 ) or anhydrous lithium tetrachlorogallate (LiGaCl 4 ) of thionyl chloride (SOCl 2 ) solution as the cathode and electrolyte lithium battery. In order to improve lithium / thionyl chloride (Li / SOCl 2 ) battery performance, some battery manufacturers have added one or more additives, catalysts, metal powders or other substances to the battery cathode, battery anode or electrolyte, and have achieved certain results. [0003] It is generally believed that lithium / thionyl chloride (Li / SOCl 2 ) The overall reaction mechanism of the battery is: 4Li + 2SOCl 2 →4LiCl↓+S+SO 2 . Sulfur (S) and sulfur dioxide (SO 2 ) is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/64H01M4/66
CPCH01M4/64H01M4/667H01M2004/028Y02E60/10
Inventor 汪以道
Owner CHENGDU JIANZHONG LITHIUM BATTERY
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