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Method for improving electric performance of copper foil collector of battery cathode

A lithium battery and collector technology is applied in the field of improving the electrical performance of a lithium battery negative copper foil collector, and can solve problems such as reduced electrical performance.

Inactive Publication Date: 2017-12-08
惠州市烯谷新能源产业技术研究院有限公司
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Problems solved by technology

[0007] The production process of very low profile electrolytic copper foil is different from traditional electrolytic copper foil in that it controls the proportion (concentration) of crystal defects such as holes, rearrangements, and twin crystals in the crystal structure of copper foil. The main method is to use new additives With the improvement of foil making conditions (electrolytic process conditions), the focus is on the comprehensive characteristics of copper foil, the surface roughness can reach Rz≦2.5, but the electrical properties (current density) will be reduced

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  • Method for improving electric performance of copper foil collector of battery cathode
  • Method for improving electric performance of copper foil collector of battery cathode
  • Method for improving electric performance of copper foil collector of battery cathode

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Embodiment Construction

[0032] The technologies in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementations in the present invention, all other implementations obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0033] refer to figure 1 As shown, a method for improving the electrical performance of the lithium battery negative electrode copper foil collector, using vacuum plasma coating technology to deposit a layer of nano-copper film on the negative electrode collector copper foil to improve the adhesion between the lithium battery negative electrode material and the collector copper foil .

[0034] In this embodiment, the coating equipment used is SJ-RTR-SDH350 winding vacuum magnetron sputtering...

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Abstract

The invention discloses a method for improving the electric performance of a copper foil collector of a battery cathode. The method is characterized in that a nano-copper film is deposited on the copper foil of the collector of a lithium battery cathode by utilizing a vacuum plasma plating technology, and the copper film surface is subjected to ion source bombardment for improving the adhesion of the lithium battery cathode material with the copper foil of the collector, the interface effect is reduced, and the electric performance of the lithium battery is improved.

Description

technical field [0001] The invention relates to the technical field of manufacturing lithium battery devices and lithium battery materials, in particular to a method for improving the electrical performance of a negative electrode copper foil collector of a lithium battery. Background technique [0002] Lithium battery anode materials hold the lifeblood of power battery safety. In lithium ion battery anode materials, except graphitized mesocarbon microspheres (MCMB), amorphous carbon, silicon or tin occupy a small market share, natural graphite and artificial Graphite occupies more than 90% of the market share of anode materials. Graphitized carbon materials, amorphous carbon materials, nitrides, silicon-based materials, tin-based materials, new alloys and other materials. [0003] Lithium-ion batteries are mainly composed of positive electrodes, negative electrodes, separators and electrolytes. When charging, the potential applied to the two poles of the battery forces th...

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Application Information

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IPC IPC(8): H01M4/66B82Y30/00
CPCB82Y30/00C23C14/022C23C14/165C23C14/35H01M4/0426H01M4/139H01M4/661H01M4/667Y02E60/10
Inventor 赵斌
Owner 惠州市烯谷新能源产业技术研究院有限公司
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