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Non-aqueous electrolyte battery and production method for same

A technology of non-aqueous electrolyte and manufacturing method, which is applied in the direction of non-aqueous electrolyte battery, organic electrolyte battery, electrode manufacturing, etc., which can solve the problems of lower discharge characteristics, hinder discharge reaction, increase of battery internal resistance, etc., and achieve excellent load characteristics Effect

Pending Publication Date: 2022-01-18
MAXELL HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when additives such as propane sultone and lithium bisoxalate borate are contained in the electrolyte solution in order to produce a sufficient effect, for example, the film formed on the surface of the negative electrode will hinder the discharge reaction and increase the internal resistance of the battery. Problems such as deterioration of discharge characteristics after high-temperature storage

Method used

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  • Non-aqueous electrolyte battery and production method for same
  • Non-aqueous electrolyte battery and production method for same
  • Non-aqueous electrolyte battery and production method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073]

[0074] A positive electrode mixture prepared by mixing manganese dioxide as the positive electrode active material, carbon black as a conductive additive, and PTFE as a binder in a mass ratio of 90:5:5 was formed to obtain a positive electrode with a diameter of 16 mm and a thickness of 1.8 mm. (Positive electrode mixture molded body).

[0075]

[0076] An aluminum foil with a thickness of 9 μm was crimped on one side of a lithium foil with a thickness of 1.2 mm, and this was punched out into a circle with a diameter of 16 mm to obtain a laminate of a lithium layer and an aluminum layer.

[0077] Next, acetylene black was dispersed in propylene carbonate to prepare a carbon layer forming composition (slurry), and the slurry was applied to the aluminum layer of the above-mentioned laminate and dried to prepare the aluminum layer on the above-mentioned laminate. A negative electrode laminate in which a carbon layer made of acetylene black was formed on the entire su...

Embodiment 2

[0084] The weight per unit area of ​​the carbon layer on the surface of the laminated body for negative electrodes was set to 0.02 mg / cm 2 , except that, a coin-shaped non-aqueous electrolyte primary battery was assembled in the same manner as in Example 1.

Embodiment 3

[0086] The weight per unit area of ​​the carbon layer on the surface of the laminated body for negative electrodes was set to 0.2 mg / cm 2 , except that, a coin-shaped non-aqueous electrolyte primary battery was assembled in the same manner as in Example 1.

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Abstract

Provided are: a non-aqueous electrolyte battery that has excellent high-temperature storage characteristics and low-temperature load characteristics; and a production method for the non-aqueous electrolyte battery. This non-aqueous electrolyte battery is characterized by including a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte. The negative electrode has: a lithium layer that has a lithium-aluminum alloy layer formed on the surface thereof; and a carbon layer that is on the lithium-aluminum alloy layer. The non-aqueous electrolyte battery can be produced by means of a method that includes a step in which a lithium-aluminum alloy layer is formed by reacting a lithium layer and an aluminum layer of a negative electrode laminate that has been formed by forming a carbon layer on the surface of an aluminum layer of a laminate that has an aluminum layer on the surface of a lithium layer.

Description

technical field [0001] The present invention relates to a non-aqueous electrolyte battery having excellent high-temperature storage characteristics and low-temperature load characteristics and a method for manufacturing the same. Background technique [0002] At present, non-aqueous electrolyte batteries such as lithium primary batteries and lithium-ion secondary batteries with non-aqueous electrolytes are used not only as power supplies for portable devices, but also as power supplies for pressure sensors inside tires, which are exposed to high temperatures and are subject to large vibrations. In various fields such as the application of the product, in order to cope with the expansion of the application, attempts have been made to improve various characteristics. [0003] However, when the battery is stored at high temperature, the reaction between the electrolyte and the electrodes occurs, causing problems such as swelling of the battery. Therefore, for applications where...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/16H01M4/06H01M4/134H01M10/0569
CPCY02E60/10H01M10/52H01M4/0416H01M4/133H01M4/366H01M4/382H01M4/463H01M4/625H01M4/587H01M4/04H01M4/405H01M4/622H01M6/14H01M10/052H01M2004/027
Inventor 小西辉亘理聪一中谷洸哉
Owner MAXELL HLDG LTD