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Production for positive electrode piece of cylindrical winding lithium-ferrite disulfide battery

A technology of iron disulfide battery and positive electrode sheet, which is applied in the direction of electrode manufacturing, etc., to achieve the effect of high capacity, low cost and excellent electrical performance

Inactive Publication Date: 2005-07-27
惠州德赛能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is not involved in the cylindrical wound lithium-iron disulfide battery

Method used

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  • Production for positive electrode piece of cylindrical winding lithium-ferrite disulfide battery
  • Production for positive electrode piece of cylindrical winding lithium-ferrite disulfide battery
  • Production for positive electrode piece of cylindrical winding lithium-ferrite disulfide battery

Examples

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

[0032] The positive electrode active material of the lithium-iron disulfide battery in this example is natural pyrite, which is crushed and sieved to make the particle size about 200 mesh, and baked in a high-temperature oven at 350°C with nitrogen for 10 hours , and then naturally cooled to below 50°C under the protection of nitrogen. Mix commercially available acetylene black (its apparent specific volume is about 11-16ml / g) with denatured alcohol at a ratio of 1:1, roll it on a double-roller machine to form a sheet, and then pass it through a 60-mesh mechanical vibrating sieve. The apparent specific volume reaches about 4ml / g. The above treated pyrite, acetylene black, graphite and additives were ball milled in a ball mill for 3 hours to form a uniformly mixed powder. Pour 37% industrial alcohol and 60% polytetrafluoroethylene emulsion...

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Abstract

The pole piece of anode is composed of pyrite, acetylene black, black lead, binding agent and additive. After the pyrite is taken by heat treatment, it mixes with compression-treated acetylene black, black lead and additive. Two methods are used in making the anode powder piece. One is slurry method: after the anode powder mixes with deionized water and industrial spirit, the Teflon liquid cream is added to form a cream; first pressing it to form film and then making it into piece. The second method is rolling forming: after the industrial spirit, Teflon liquid cream are added into the anode powder, first pressing it into film; then making it into pieces; the pieces are put into bake oven to remove water and then put into vacuum case for drying.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a preparation method of a cylindrical wound lithium battery positive pole piece whose positive pole active material is iron disulfide. Background technique [0002] Lithium batteries are a new generation of batteries first developed by the United States in the late 1950s. Lithium monofluoride battery was first developed in Japan in 1973, and it has a history of more than 30 years. Japanese civilian lithium batteries were put into mass production in 1975. And our country also realized Li / MnO in the 1980s 2 Production of button cells. [0003] Zhang Xiqing, Shen Yongpei, and Shen Songjian first mentioned in "Modification of Polyethylene for Lithium-Manganese Button Batteries" ("Battery" No. 3, 1994) that different additives were blended with high-density polyethylene to improve button batteries. leak-proof performance. [0004] Zhang Maoqing designed a positive e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04
CPCY02E60/12Y02E60/10
Inventor 刘建华何献文杨建锋
Owner 惠州德赛能源科技有限公司
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