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No-lag lithium / iron disulfide round cell and manufacturing method thereof

An iron disulfide, cylindrical battery technology, applied in electrode manufacturing, battery electrodes, battery pack components, etc., can solve the problems affecting the application of lithium/iron disulfide cylindrical batteries, discharge lag, etc., to improve overall quality and increase discharge. The effect of simple capacity and production process

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

AI Technical Summary

Problems solved by technology

[0003] Like all lithium metal batteries, lithium / iron disulfide cylindrical batteries have a discharge hysteresis, which seriously affects the application of lithium / iron disulfide cylindrical batteries

Method used

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  • No-lag lithium / iron disulfide round cell and manufacturing method thereof
  • No-lag lithium / iron disulfide round cell and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] After mixing 100g of iron disulfide, 10g of lithium titanate and 1.5g of carbon black evenly, add 65g of 4% carboxymethyl cellulose solution, stir for 90-120min to form a slurry, and then coat the slurry on a thickness of 300mm×40mm× 20μm aluminum foil, then put the aluminum foil in a vacuum oven at 120-150℃, 1kPa, dry for 5-18h, take it out, roll it with a tablet machine to a thickness of 200μm, dry it at 90℃ for 28h, and then transfer it to Store and stand-by in a dry environment with a relative humidity of ≤1%. Put the polypropylene separator and positive electrode on the lithium strip of the corresponding size in sequence, after winding, into the shell, inject 2.6g of 1M LiPF 6 In the 1:1:4:1 electrolyte solution of PC (propylene carbonate), EC (ethylene carbonate), DEC (diethyl carbonate) and GBL (gamartin lactone), seal to obtain lithium / di Iron sulfide cylindrical battery.

Embodiment 2

[0022] Mix 50g of iron disulfide, 10g of titanium dioxide, and 1.2g of graphite evenly, add 30g of 3% polyacrylate solution, stir for 90-120min to form a slurry, and then coat the slurry on an iron foil with a thickness of 180mm×22mm×40μm , then put the iron foil in a vacuum oven at 120-150°C, 1kPa, dry for 5-18 hours, take it out, roll it with a tablet machine to a thickness of 160μm, dry it at 90°C for 28 hours, and then transfer it to a place with a relative humidity ≤ Store in a dry environment of 1% for use. Put the polyethylene separator and positive electrode in sequence on the lithium aluminum alloy of the corresponding size, after winding, into the shell, inject 1.8g 1MLiCiO 4 In an electrolyte solution of 1:3 PC and DME, seal it to obtain a lithium / iron disulfide cylindrical battery.

Embodiment 3

[0024] After mixing 100g of iron disulfide, 13g of sodium titanate and 2g of iron powder evenly, add 61g of 5% polyethylene oxide solution, stir for 90-120min to form a slurry, and then coat the slurry on a copper plate with a thickness of 300mm×40mm×20μm. Then put the copper foil in a vacuum oven at 120-150°C and 1kPa, dry it for 5-18 hours, take it out, roll it with a tablet machine to a thickness of 200μm, dry it at 90°C for 28 hours, and then transfer it to a relative Store and stand-by in a dry environment with humidity ≤1%. Place the polypropylene felt separator and positive electrode in turn on the lithium strip of the corresponding size, after winding, into the shell, inject 2.6g 0.8M LiBOB and dissolve it in a 1:1:5:3 mixed solvent of PC, EC, DEC and GBL. The formed electrolyte solution is sealed to obtain a lithium / iron disulfide cylindrical battery.

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Abstract

The invention provides a no-lag lithium / iron disulfide round cell and a manufacturing method thereof. The positive pole of the cell is added with a titanium compound in a certain proportion such as one or a mixture of more in an arbitrary ratio of lithium titanate, sodium titanate, barium titanate, ilmenite, titanium dioxide, and the like; the titanum compound, iron disulfide, a conductive agent and a binder are evenly mixed and stirred to be made into slurry, and then, the slurry is coated on an aluminium substrate, and the aluminum substrate is milled and cut into a positive pole sheet; a lithium or lithium alloy negative pole is combined with the positive pole sheet. The lithium / iron disulfide round cell is made after adding the electrolyte. The cell can be widely applied in various fields. The technical method has simple process, eliminates the delay phenomenon in the discharge course, and enhances the stability of cell discharge voltage.

Description

technical field [0001] The invention belongs to the technical field of chemical power source energy storage, and in particular relates to a lithium / iron disulfide cylindrical battery and a manufacturing method thereof. Background technique [0002] In recent years, with the development of electronic technology and the increasing emphasis on environmental protection in the world, higher requirements have been put forward for chemical power sources. At present, the mainstream primary cylindrical battery in the market is alkaline zinc-manganese battery. The advantage of this battery is that it is cheap, but the disadvantage is that it has low capacity and poor high-rate discharge performance. It is not suitable for heavy loads such as digital cameras, electric toys, and instruments. Among the electrical appliances used, they also pollute the environment after they are discarded. The lithium / iron disulfide cylindrical battery has a higher capacity than the same type of alkaline...

Claims

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Application Information

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IPC IPC(8): H01M6/14H01M4/02H01M4/58H01M4/48H01M4/52H01M4/62H01M4/38H01M4/40H01M4/46H01M4/66H01M2/16H01M6/16H01M4/04
CPCY02E60/12
Inventor 关成善郝德利刘津宏王欣叶丽光
Owner SHANDONG SHENGONGHAITE ELECTRONICS TECH
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