Unlock instant, AI-driven research and patent intelligence for your innovation.

Lithium ion battery negative electrode current collector material and preparation method

A technology for lithium-ion batteries and current collectors, which is applied to battery electrodes, electrode carriers/current collectors, secondary batteries, etc., can solve problems such as fire, hidden safety hazards and explosions of lithium-ion batteries, and improve safety performance and ease of oxidation Chemical properties, the effect of improving corrosion resistance

Active Publication Date: 2014-08-20
SHANDONG GOLDENCELL ELECTRONICS TECH
View PDF1 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lithium-ion batteries are far superior to other secondary batteries in terms of specific capacity, no memory effect, long cycle life, and environmental protection. Lithium-ion batteries are called "ultimate batteries", but why are there no lithium-ion batteries in the field of large-capacity batteries? Where is the figure? The key issue is restricted by the safety issues of lithium-ion batteries. The biggest safety hazards of lithium-ion batteries are explosions, fires, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Lithium ion battery negative electrode current collector material and preparation method
  • Lithium ion battery negative electrode current collector material and preparation method
  • Lithium ion battery negative electrode current collector material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0019] First, clean the surface of the copper foil in distilled water at 100°C to remove impurities such as oil stains on the surface, take it out after 30 minutes, dry it under vacuum at 105°C for 3 hours, and then cool it to room temperature in vacuum.

[0020] BiTiO doped with La and Mn 3 is the sputtering target, metal copper foil is the sputtering substrate, and the chamber is pre-evacuated to 5×10 -3 Pa, and then argon gas is introduced into the cavity, and the pressure in the cavity is controlled to be 1.5 Pa to heat the base copper foil to 500°C. The parameters of the equipment are: RF power: 100W, accelerating voltage: 200V, current density: 30mA / cm, the distance between the sputtering target and the substrate is 60mm, and the speed of the substrate is 2m / min. Cool to room temperature in argon after sputtering.

[0021] After passing through the radio frequency magnetron sputtering process, it was first cleaned with distilled water, then dried in vacuum at ...

Embodiment approach 2

[0025] Clean the surface of the copper foil in distilled water at 100°C to remove impurities such as oil stains on the surface, take it out after 50 minutes, dry it under vacuum at 105°C for 2.5 hours, and then cool it to room temperature in vacuum.

[0026] BiTiO doped with La and Mn 3 is the sputtering target, metal copper foil is the sputtering substrate, and the chamber is pre-evacuated to 5×10 -3 Pa, and then argon gas is introduced into the cavity, and the pressure in the cavity is controlled to be 1.5 Pa to heat the base copper foil to 700°C. The parameters of the equipment are: RF power: 120W, accelerating voltage: 240V, current density: 40mA / cm, the distance between the sputtering target and the substrate is 70mm, and the speed of the substrate is 4m / min. Cool to room temperature in argon after sputtering.

[0027] After passing through the radio frequency magnetron sputtering process, it was first cleaned with distilled water, then dried in vacuum at 105 °...

Embodiment approach 3

[0031] First, clean the surface of the copper foil in distilled water at 100°C to remove impurities such as oil stains on the surface, take it out after 60 minutes, dry it under vacuum at 105°C for 2 hours, and then cool it to room temperature in vacuum.

[0032] BiTiO doped with La and Mn 3 is the sputtering target, metal copper foil is the sputtering substrate, and the chamber is pre-evacuated to 5×10 -3 Pa, and then argon gas is passed into the cavity, and the pressure in the cavity is controlled to be 1.5 Pa to heat the base copper foil to 800°C. The parameters of the equipment are: RF power: 140W, accelerating voltage: 300V, current density: 50mA / cm, the distance between the sputtering target and the substrate is 90mm, and the speed of the substrate is 6m / min. Cool to room temperature in argon after sputtering.

[0033] After passing through the radio frequency magnetron sputtering process, it was first cleaned with distilled water, then dried in vacuum at ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a lithium ion battery negative electrode current collector material and a preparation method thereof. The surface of a lithium ion battery cathode current collector material copper foil is coated with a BiTiO3 layer with which is doped with La and Mn in the doping thickness of 2 to 4 micrometers. The preparation method comprises the steps: washing impurities such as oil contamination on the surface of the copper foil in distilled water at the temperature of 100DEG C, taking out the copper foil after 30 to 60 minutes, drying the copper foil for 2h to 3h under the vacuum condition of 105 DEG C, then cooling the copper foil to the room temperature in a vacuum environment, pre-vacuumizing a cavity to 5*10<-3>Pa by adopting the BiTiO3 doped with La and Mn as a sputtering target and metal copper foil as a sputtering base material, introducing argon into the cavity, controlling the pressure in the cavity at 1.5Pa, and heating the copper foil base material to 500 to 800 DEG C, wherein parameters of used equipment are as follows: the radio frequency power is 100 to 140 W, the acceleration voltage is 200 to 300 V, the speed of the base material is 26m / min; cooling the copper foil to the room temperature after being sputtered. By adopting the lithium ion battery cathode current collector copper foil material, the safety performance of a lithium ion battery can be effectively improved.

Description

technical field [0001] The invention provides a lithium ion battery negative electrode current collector material and a preparation method. Background technique [0002] Today, with the rapid development of science and technology, with the extensive application of electronic equipment such as mobile phones, digital cameras, and notebook computers in human life, lithium-ion batteries have also rapidly developed into an important industry in the field of secondary batteries. Lithium-ion batteries are far superior to other secondary batteries in terms of specific capacity, no memory effect, long cycle life, and environmental protection. Lithium-ion batteries are called "ultimate batteries", but why are there no lithium-ion batteries in the field of large-capacity batteries? Where is the figure? The key issue is restricted by the safety issues of lithium-ion batteries. The biggest safety hazards of lithium-ion batteries are explosions and fires. [0003] The production pro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/66C23C14/35C23C14/06
CPCC23C14/06C23C14/35H01M4/667H01M10/0525Y02E60/10
Inventor 关成善宗继月李涛贾传龙刘艳辉
Owner SHANDONG GOLDENCELL ELECTRONICS TECH