Cell liquor and lithium ion battery therefor

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...

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.

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