1.5V cylinder lithium pyrite battery with anode collection fluid of stephanoporate metal

A technology for iron disulfide batteries and positive current collectors, which is applied in secondary batteries, electrode carriers/current collectors, batteries with organic electrolytes, etc. and other problems, to achieve the effect of simplifying the production process, enhancing the high-current discharge capacity, and increasing the discharge capacity

Inactive Publication Date: 2008-11-05
SHANDONG SHENGONGHAITE ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing lithium iron disulfide cylindrical battery positive electrode uses aluminum foil as the current collector, and the active material is coated or made into a thin film and bonded on the aluminum foil. The active material cannot be fully utilized, which reduces the capacity of the battery and affects the consistency of the capacity of the battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Mix 5g of iron disulfide powder, 5g of graphite powder, and 0.2g of polyethylene oxide evenly, and fill the mixture evenly into the gap of foamed nickel with a volume of 300mm×1.0mm×105mm and a porosity of 83%. The roller machine presses the foamed nickel into a thin plate with a thickness of 0.18mm, and then cuts it into a pole piece of 280mm×35×0.18mm, welds the nickel tab on the corresponding position of the pole piece, and then puts the pole piece with tab into The temperature is 150°C, and the pressure is 1kPa in a vacuum oven, dry for 12 hours, and transfer the electrode piece with tabs to a dry environment with a relative humidity of ≤1%, and use it as the positive electrode. Put the pressed nickel tab with the size of 290mm×30mm×0.5mm lithium strip negative electrode, the size of 330mm×40mm×0.025mm glass fiber diaphragm and the positive electrode in order, and wind it into a cylinder, put the cylinder into the cylinder In the stainless steel shell, weld the tab ...

Embodiment 2

[0020] Mix 5g of iron disulfide powder, 1g of graphite powder, and 10g of acrylate aqueous solution with a mass concentration of 15%, and fill the mixture evenly into the gap of foamed copper with a volume of 300mm×1.0mm×105mm and a porosity of 95%. After that, the foamed copper is pressed to a 0.18mm thick sheet with a roller machine, and then cut into a pole piece of 280mm×35×0.18mm, and the nickel lug is welded on the corresponding position of the pole piece, and then the strip lug Put the electrode piece into a vacuum oven at a temperature of 150°C and a pressure of 1kPa, and dry it for 12 hours. Transfer the electrode piece with tabs to a dry environment with a relative humidity of ≤1%, and use it as the positive electrode. Place the pressed nickel tab with a size of 290mm×30mm×0.5mm lithium aluminum alloy negative electrode (Li: 98%wt, Al: 2%wt), a size of 330mm×40mm×0.025mm polypropylene separator and positive electrode in order, After winding into a cylinder, put the c...

Embodiment 3

[0022] Mix 7g of iron disulfide powder, 3g of graphite powder, and 10g of polytetrafluoroethylene emulsion with a mass concentration of 5%, and fill the mixture evenly into an aluminum braided mesh with a volume of 300mm×1.0mm×105mm and a porosity of 90%. After that, the aluminum braided mesh is pressed to a 0.18mm thick sheet with a roller machine, and then cut into a pole piece of 280mm×35×0.18mm, and the nickel tab is welded on the corresponding position of the pole piece, and then the strip Put the tab electrode piece into a vacuum oven at a temperature of 150°C and a pressure of 1kPa, dry for 12 hours, and transfer the tab electrode piece to a dry environment with a relative humidity of ≤1% to be used as the positive electrode. Put the pressed nickel tab with the size of 290mm×30mm×0.5mm lithium strip negative electrode, the size of 330mm×40mm×0.025mm glass fiber diaphragm and the positive electrode in order, and wind it into a cylinder, put the cylinder into the cylinder ...

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PUM

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Abstract

A 1.5V column lithium iron disulphide cell with the porous metal as the anode current collector, includes a case, wherein the upper of the case is a combination nut cap, and an anode and a cathode are arranged in the case; the case is filled with the electrolyte; a septum is arranged between the anode composed of a current collector and an anode material and the cathode. The cathode is the metallic lithium, the lithium aluminum alloy or the lithium silicon alloy. The electrolyte is the solution in which lithium salt is dissolved in the ethylene carbonate, characterized in that, the anode current collector is the porous metal, selected from one of foaming nickel, fiber nickel, foaming copper, foaming aluminum, weaved aluminum mesh, weaved copper mesh, weaved stainless steel mesh, weaved nickel mesh. The invention causes the active material fully to contact with the current collector, advances the utilance of the active material, refrains expansion of the anode in the cell discharging process, reduces the falling of the active material, reinforces the discharging ability of the large current of the cell, advances the discharging capacity of the cell, simplifies the production technology of the cell, which is suitable for the large-scale industrialization production.

Description

technical field [0001] The invention relates to a 1.5V cylindrical lithium iron disulfide battery, in particular to a 1.5V cylindrical lithium iron disulfide battery whose positive current collector is porous metal. Background technique [0002] In recent years, with the development of electronic technology and the increasing emphasis on environmental protection around the world, higher requirements have been put forward for chemical power sources. The traditional alkaline zinc-manganese battery has weak discharge capacity under high current and high load, which is increasingly unable to meet the needs of applications. Cylindrical lithium iron disulfide battery is a new type of 1.5V battery. The active material of the positive electrode is iron disulfide, and the negative electrode is made of metal lithium or lithium alloy. The working voltage is 1.5V. The discharge capacity is higher than that of the same type of alkaline manganese battery. It is non-polluting and has the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/64H01M4/58H01M4/62H01M4/38H01M2/16H01M6/16H01M10/40H01M50/417H01M50/491
CPCY02E60/122Y02E60/10
Inventor 李青海郝德利
Owner SHANDONG SHENGONGHAITE ELECTRONICS TECH
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