Anode material of Li-ferrous disulfide battery and battery

An iron disulfide battery and iron disulfide technology, applied in battery electrodes, lithium batteries, non-aqueous electrolyte batteries, etc., can solve the problems of poor high-current discharge performance, high open-circuit voltage, and low discharge platform, and achieve large discharge capacity , high discharge platform and long discharge time

Inactive Publication Date: 2011-04-20
GUANGZHOU GREAT POWER ENERGY & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the positive electrode material used for lithium-iron disulfide batteries is usually natural pyrite, and batteries assembled with this material have high open circuit voltage, low discharge platform, and poor high-current discharge performance.

Method used

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  • Anode material of Li-ferrous disulfide battery and battery
  • Anode material of Li-ferrous disulfide battery and battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Iron disulfide powder is over 325 mesh 985g, after roasting, 47 grams of the mixture with the first main group element compound lithium carbonate 21.7g, binder polyvinylidene fluoride (PVDF) 27.8g, conductive agent carbon black and acetylene black, add N -Stir the pyrromethyl alkanone evenly, coat the dispersed positive electrode active material slurry on the metal strip-shaped material substrate, dry and remove the solvent, roll and cut it into a positive electrode sheet of a suitable size. And the positive electrode sheet is wound with the negative electrode metal lithium strip and the diaphragm in an environment with a relative humidity lower than 5% to form a battery electrode sheet group, put into the battery case, inject electrolyte, and seal to form a lithium-iron disulfide battery.

Embodiment 2

[0025] Iron disulfide powder crosses 985g of 325 meshes, after roasting, 47 grams of the mixture with the first main group element compound potassium carbonate 21.7g, binder polyvinylidene fluoride (PVDF) 27.8g, conductive agent carbon black and acetylene black, add N -Stir the pyrromethyl alkanone evenly, coat the dispersed positive electrode active material slurry on the metal strip-shaped material substrate, dry and remove the solvent, roll and cut it into a positive electrode sheet of a suitable size. And the positive electrode sheet is wound with the negative electrode metal lithium strip and the diaphragm in an environment with a relative humidity lower than 5% to form a battery electrode sheet group, put into the battery case, inject electrolyte, and seal to form a lithium-iron disulfide battery.

Embodiment 3

[0027] Other steps were consistent with Example 1, and the added first main group element compound was 19.8 g of sodium silicate.

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Abstract

The invention relates to an anode material of a Li-ferrous disulfide battery and the Li-ferrous disulfide battery, belonging to the battery field. The anode material of the Li-ferrous disulfide battery comprises the following ingredients by weight percentage: 50-99.5 percent of ferrous disulfide powder, 0.25-25 percent of bonder, 0.25-25 percent of conductive agent and the balance first main group element compounds accounting for 0.4-10 percent of the quality of the ferrous disulfide powder; the first main group element compounds comprise one ore more o carbonate, bicarbonate, silicate, germanate, acetate, phosphate, aluminate, titanate and amino salts. In the invention, the added first main group element compounds greatly improve the discharging platform and discharging performance of the battery, the discharging platform of the battery is high, the discharging time is long, the discharge capacity is large, the heavy-current discharging property is good and the storage life is long.

Description

technical field [0001] The positive electrode material of the lithium-iron disulfide battery and the battery of the invention belong to the field of batteries, and in particular relate to the positive electrode material of the lithium-iron disulfide battery. Background technique [0002] Lithium-iron disulfide battery, the active material of the positive electrode is iron disulfide (FeS2), the active component of the negative electrode is lithium metal, the electrolyte is organic electrolyte, and the rated voltage is 1.5V, which matches the general electrical appliances and can be directly replaced Standard aqueous battery. The discharge capacity of AA-type lithium-iron disulfide batteries is 4 times that of alkaline batteries in a wide temperature range and high current discharge; alkaline batteries for digital cameras can only take 70 consecutive shots, and lithium-iron disulfide The iron battery can take 788 consecutive shots, which is 11 times that of the alkaline zinc-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M4/139H01M10/058H01M10/052
CPCY02E60/122Y02E60/12Y02E60/10Y02P70/50
Inventor 晏志强刘念
Owner GUANGZHOU GREAT POWER ENERGY & TECH CO LTD
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