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Lithium-ferrous disulfide battery and manufacturing method thereof

A ferrous disulfide and battery technology, which is applied in the manufacture of electrolyte batteries, battery electrodes, non-aqueous electrolyte batteries, etc., can solve the problems of battery discharge performance not mentioned, and achieve the effect of improving low-temperature discharge performance

Active Publication Date: 2012-10-24
EVE ENERGY CO LTD
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  • Application Information

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Problems solved by technology

However, the above patent does not mention how to solve the discharge performance of the battery in a wide temperature environment (-40°C ~ 60°C or even 80°C).

Method used

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Embodiment approach

[0016] method one:

[0017] The positive plate uses ferrous disulfide as the positive active material, graphite, vapor-grown carbon fiber, carbon nanotubes and super conductive carbon as the conductive material, and polyvinylidene fluoride as the binder. Among them, the mass ratio of ferrous disulfide, conductive agent and binder is 90:5:5. In this scheme, the addition of carbon nanotubes and vapor-phase grown carbon fibers is 0%.

[0018] The electrolyte uses lithium iodide and lithium bis(trifluoromethylsulfonyl)imide as the electrolyte, wherein the lithium salt: the volume molar concentration of lithium iodide in a non-aqueous solvent is 1 mol / L, and bis(trifluoromethylsulfonyl) The volume molar concentration of lithium sulfonyl imide in non-aqueous solvent is 0.1 mol / L. Non-aqueous solvent: 70% by mass of 1,3-dioxolane, 30% by mass of ethylene glycol dimethyl ether, and 0% by mass of additive N,N-dimethyltrifluoroacetamide ;

[0019] Assemble 15 lithium-ferrous disulfi...

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Abstract

The invention relates to a lithium-ferrous disulfide battery. The lithium-ferrous disulfide battery comprises a housing, an anode, a cathode, an isolating membrane for isolating the anode from the cathode, and an electrolytic solution, wherein the anode and the cathode are arranged in the housing, the anode contains 80-95% of ferrous disulfide (FeS2) by mass ratio, the cathode is a lithium tablet, solvents for the electrolytic solution comprise 1,3-dioxolane and glycol dimethyl ether, and electrolyte for the electrolytic solution comprises lithium iodide. A manufacturing method for the lithium-ferrous disulfide battery is as follows: adding a proper amount of carbon nanotube, vapor growth carbon fibers, conductive graphite and / or super conductive carbon into the anode, and adding a proper amount of additives such as N,N-dimethyl trifluoroacetamide and the like into the electrolytic solution. The lithium-ferrous disulfide battery manufactured by the manufacturing method is good in discharge performance in wider high and low temperature environments.

Description

technical field [0001] The invention relates to a lithium-ferrous disulfide battery and a preparation method thereof. Background technique [0002] Lithium-iron disulfide (Li / FeS 2 ) batteries are low-voltage lithium batteries, and their operating voltage platform is 1.5V, which is comparable to alkaline manganese (Zn / MnO 2 ) Batteries are interchangeable. The specific energy of lithium-iron disulfide battery is much larger than that of alkaline battery of the same size, so it has a good market prospect. [0003] In the Chinese invention patent with the authorized announcement number CN101485016 B, it is mentioned that lithium trifluoromethanesulfonate (LiTFS) or lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) or a mixture of the two is used as the solute to make electrolytic Lithium-iron disulfide battery made of graphite and carbon black as the positive electrode conductive material, and to solve the battery voltage hysteresis problem. In the electrolyte of the sol...

Claims

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Application Information

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IPC IPC(8): H01M4/58H01M4/62H01M10/058
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 袁中直刘玲余思恩
Owner EVE ENERGY CO LTD
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