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Improved type lithium-ferrous disulfide battery and manufacturing method of the same

An improved technology of ferrous disulfide, which is applied in primary batteries, primary battery electrodes, battery electrodes, etc., can solve the problems that batteries dominate, cannot meet the needs of heavy-load work of market electrical appliances, and have large discharge capacity. High discharge platform, improved high current discharge capacity, and good discharge performance

Inactive Publication Date: 2009-03-11
SHANDONG SHENGONGHAITE ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) Large discharge capacity
[0004] The current market situation is dominated by low-grade batteries, which are far from meeting the needs of heavy-duty electrical appliances in the market

Method used

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  • Improved type lithium-ferrous disulfide battery and manufacturing method of the same
  • Improved type lithium-ferrous disulfide battery and manufacturing method of the same
  • Improved type lithium-ferrous disulfide battery and manufacturing method of the same

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Effect test

Embodiment

[0066] The present invention is made through the following steps:

[0067] (1) Make positive electrode slurry. The raw materials are proportioned according to the following parts by weight:

[0068] Positive active material ferrous disulfide (FeS 2 ) 85;

[0069] Binder polyvinylidene fluoride (PVDF) 10;

[0070] Conductive agent acetylene carbon black 5;

[0071] Production method: first dissolve 10 parts by weight of polyvinylidene fluoride (PVDF) in 90 parts by weight of nitrogen-methylpyrrolidone (NMP), and then add 85 parts by weight of ferrous disulfide (FeS 2 ), 5 parts by weight of acetylene carbon black are mixed, stirred and dispersed to form a uniform positive electrode slurry.

[0072] (2) The positive electrode slurry is cast-coated on the surface of the aluminum foil to form a positive electrode sheet, which is pressed on a tablet press and cut into appropriate sizes. The positive electrode slurry of the present invention can be coated on one or both sides of the alu...

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Abstract

The invention relates to an improved lithium- ferrous disulfide battery which comprises a shell; a positive pole piece and a negative pole piece in the shell are wound together through a porous isolating film, and organic electrolyte is filled in the shell. The positive pole piece comprises a positive active material and a positive current collector, and the positive active material is ferrous disulfide. The negative pole piece comprises a negative active material and a negative current collector, wherein the negative active material is metal lithium foil, and the negative current collector is selected form a copper net, a hole-shaped aluminum foil, an aluminum net, a hole-shaped copper foil, foamed nickel, a hole-shaped nickel foil or nickel net. The positive pole piece is manufactured by the positive active material, conductive agent and binding agent which are evenly mixed and applied to a metallic matrix; and the negative pole piece is manufactured by pressing the metal lithium foil and the metal net or the hole-shaped foil. Then the organic electrolyte is infused, and the battery is obtained after the packaging. The invention has the advantages of small internal resistance, good large current discharge performance, good pulse discharge performance, high discharge platform, no voltage sag and good consistence of performance.

Description

Technical field [0001] The invention relates to a lithium-ferrous disulfide battery used in electronic products such as toy cars, remote control toys, digital cameras, razors, etc., and a manufacturing method thereof, in particular to an improved lithium-ferrous disulfide Battery and its manufacturing method. Background technique [0002] At present, the rapid development of electronic products in the direction of diversification and miniaturization has prompted rapid changes in the battery field. Now batteries are required to have large specific energy, long life, low price, and convenient use. Therefore, disposable high-energy batteries with better performance and stronger adaptability continue to emerge. At present, a newer type, lighter weight, better high-power discharge performance of lithium-ferrous disulfide primary battery (Li-FeS 2 ). [0003] Lithium-ferrous disulfide battery belongs to the primary lithium battery series, its electrolyte adopts organic electrolyte, and...

Claims

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Application Information

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IPC IPC(8): H01M6/00H01M4/06H01M4/08H01M4/38H01M4/64H01M4/66H01M4/70
Inventor 李青海郝德利刘津宏吴曲勇
Owner SHANDONG SHENGONGHAITE ELECTRONICS TECH
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