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Non-aqueous solution lithium-ferrous disulfide primary cell

An iron disulfide, non-aqueous solution technology, applied in the electrode of primary battery, non-aqueous electrolyte battery, battery electrode, etc., can solve the problem of unsatisfactory decline rate of zinc-nickel battery, large decline rate of battery capacity, short storage life, etc. question

Active Publication Date: 2006-10-11
FUJIAN NANPING NANFU BATTERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this battery has the disadvantages of high capacity decline rate and short storage life, which is determined by the nature of nickel oxyhydroxide.
Although a lot of research on additives has been carried out, generally speaking, the decline rate of zinc-nickel batteries is still unsatisfactory.

Method used

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  • Non-aqueous solution lithium-ferrous disulfide primary cell
  • Non-aqueous solution lithium-ferrous disulfide primary cell

Examples

Experimental program
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Embodiment

[0046]Scheme 1: Take FeS2 with different purity and different pH values, and make positive electrode active materials with conductive materials and binders, wherein the conductive materials are graphite and acetylene black, the binder is PVDF, and the weight ratio of positive electrode materials is: FeS285%~ 95%, conductive material graphite 2.7%-10%, acetylene black 0.3-2%, binder PVDF 2-10%. First dry mix FeS2, graphite, and acetylene black, then add the dissolved PVDF solution (dissolved in NMP), and then perform wet mixing. When the viscosity of the slurry is measured in the range of 3000-5000 centipoise, the positive electrode active slurry is coated on the aluminum foil, dried, rolled and cut to make the positive electrode. The negative electrode is lithium metal, Cellgard 2400 diaphragm is used, and the electrolyte is LiI (0.3-1M) / DX (40wt%) / DME (30wt%) / SFL (30wt%) system to make a battery, and the voltage hysteresis is eliminated through pre-discharge. The discharge p...

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Abstract

The disclosed non-aqueous Li-FeS2 one-time cell comprises: coating porous anode active material composed by FeS2 with average size less than 40 mum, the conductive material and adhesive on metal foil of collecting-current body; using Li and high-pure PE membrane or PE / PP composite membrane with specific surface area as 0.8-10m2 / g as the cathode active material and cell membrane respectively. This production has well discharge performance.

Description

technical field [0001] The invention relates to a disposable battery, which is a lithium-iron disulfide primary battery. Background technique [0002] At the beginning of the 21st century, with the advent of the mobile era, various digital products such as digital cameras spread rapidly. As the power source of these digital products, batteries with excellent high-current pulse discharge performance are indispensable. In order to meet this requirement, various alkaline manganese battery manufacturers around the world have conducted various studies on the high-current discharge performance of alkaline batteries. In recent years, the M3 launched by Duracell, the e2 launched by Energizer, the high-current battery launched by Panasonic, and the G series battery launched by FDK have all improved in terms of high-current discharge performance. However, according to the results of market research, more than half of digital camera users are dissatisfied with the life of alkaline dry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/14H01M4/06H01M4/38H01M4/58H01M6/16H01M50/417
Inventor 张清顺常海涛赵洋陈进添余佑锋陈美娟
Owner FUJIAN NANPING NANFU BATTERY
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