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Cell liquor and lithium ion battery therefor

An electrolyte and lithium salt technology, applied in the field of benzotriazole compounds, can solve problems such as corrosion, and achieve the effects of reducing outgassing, excellent charging/discharging cycle performance, and improving storage life

Inactive Publication Date: 2006-08-16
ZHEJIANG FIRE RETARDENT LITHIUM ELECTRIC MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, existing lithium-ion batteries have deficiencies in terms of service life, storage life, negative electrode current collector copper foil in the battery system, and corrosion caused by long-term cycles.

Method used

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  • Cell liquor and lithium ion battery therefor
  • Cell liquor and lithium ion battery therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1. Add 1% (weight percent) of benzotriazole (BTA) and 1% (weight percent) of vinylene carbonate (VC) to the electrolyte solution.

Embodiment 2

[0039] Embodiment 2, adding 1% (weight percentage) of benzotriazole (BTA) and 1% (weight percentage) of vinyl ethylene carbonate (VEC) to the electrolytic solution.

Embodiment 3

[0040] Embodiment 3, adding 1% (weight percentage) of benzotriazole (BTA) and 1% (weight percentage) of ethylene glycol sulfite (ES) to the electrolyte solution.

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Abstract

The invention consists of benzotriazole compounds and an electrode comprising at least one of vinyl ethylene carbonate, vinylene carbonate, cyclic sulfonic acid, and cyclic sulfite. It is for use in forming a thin and dens passive film to reduce the gas production rate at process of cell forming, and to decrease corrosion of copper foil and aluminum foil of current collector, and to reduce the impedance of battery.

Description

technical field [0001] The present invention relates to a kind of benzotriazole compound, which also contains vinyl ethylene carbonate, vinylene carbonate, cyclic sulfonic acid, cyclic sulfuric acid ester, cyclic sulfite, cyclic anhydride, cyclic An electrolytic solution of at least one type of imide and a lithium ion battery using the electrolytic solution. Background technique [0002] From the commercialization of Sony Co.'s lithium-ion liquid secondary battery to the present, the lithium-ion secondary battery has been widely used in portable computers, portable phones, etc. due to its high energy density and no memory effect. The lithium-ion secondary battery includes a negative electrode and a positive electrode. The negative electrode generally uses carbon-containing materials as the negative electrode active material, and the positive electrode generally uses transition metal oxides as the positive electrode active material. The lithium-ion seconda...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/40H01M6/16H01M10/0525H01M10/0569
CPCY02E60/122Y02E60/10
Inventor 俞会根孙一飞
Owner ZHEJIANG FIRE RETARDENT LITHIUM ELECTRIC MATERIALS
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