Lithium ion battery positive active substance, anode material, anode material sizing agent, anode piece, preparation method and lithium ion battery

A positive electrode active material and lithium-ion battery technology, applied in battery electrodes, electrode carriers/current collectors, secondary batteries, etc., can solve problems such as limitations, limited conductive internal resistance, and poor conductive effects, and achieve improved Thermal stability, improved safety, and excellent thermal stability

Inactive Publication Date: 2017-12-29
SHANGHAI HUAPU AUTOMOBILE CO LTD
View PDF6 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the safety problem of ternary lithium-ion batteries has not been completely resolved, especially the ternary lithium-ion batteries with high nickel content.
However, due to the problem of contact between the metal aluminum foil and the powder, its conductive effect is not good
Som

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 positive active substance, anode material, anode material sizing agent, anode piece, preparation method and lithium ion battery
  • Lithium ion battery positive active substance, anode material, anode material sizing agent, anode piece, preparation method and lithium ion battery
  • Lithium ion battery positive active substance, anode material, anode material sizing agent, anode piece, preparation method and lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0100] Example 1

[0101] A positive active material for a lithium ion battery, consisting of the following components by mass percentage: 10% lithium iron manganese phosphate and 90% lithium nickel cobalt manganate;

[0102] Among them, lithium iron manganese phosphate is LiMn 0.6 Fe 0.4 PO 4 , D50 is 20μm, specific surface area is 30m 2 / g;

[0103] Lithium nickel cobalt manganese oxide is Li(Ni 0.6 Co 0.2 Mn 0.2 )O 2 , D50 is 10μm, specific surface area is 0.3m 2 / g.

Example Embodiment

[0104] Example 2

[0105] An active material for the positive electrode of a lithium ion battery, consisting of the following components by mass percentage: 50% lithium iron manganese phosphate and 50% lithium nickel cobalt manganate;

[0106] Among them, lithium iron manganese phosphate is LiMn 0.7 Fe 0.3 PO 4 , D50 is 30μm, specific surface area is 20m 2 / g;

[0107] Lithium nickel cobalt manganese oxide is Li(Ni 0.8 Co 0.1 Mn 0.1 )O 2 , D50 is 15μm, specific surface area is 0.1m 2 / g.

Example Embodiment

[0108] Example 3

[0109] An active material for the positive electrode of a lithium ion battery, consisting of the following components by mass percentage: 30% lithium iron manganese phosphate and 70% lithium nickel cobalt manganate;

[0110] Among them, lithium iron manganese phosphate is LiMn 0.8 Fe 0.2 PO 4 , D50 is 25μm, specific surface area is 25m 2 / g;

[0111] Lithium nickel cobalt manganese oxide is Li(Ni 0.5 Co 0.2 Mn 0.3 )O 2 , D50 is 12μm, specific surface area is 0.2m 2 / g.

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
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention discloses a lithium ion battery positive active substance, an anode material, an anode material sizing agent, an anode piece, a preparation method thereof and a lithium ion battery, which relates to the technical field of lithium ion batteries. The lithium ion battery positive active substance is mainly prepared from the following components by weight percent: 10 to 50 percent of lithium manganese ferrous phosphate and 50 to 90 percent of nickel cobalt lithium manganate, wherein the lithium manganese ferrous phosphate is LiMn*Fe1-*PO4, x is greater than 0.5 and less than 1; and the nickel cobalt lithium manganate is Li(Ni*CoyMnz)O2, x is greater than 0 and less than 1, y is greater than 0 and less than 1, and z is greater than 0 and less than 1. The lithium ion battery positive active substance solves the problems of excessively high temperature and safety of the traditional lithium battery at multiplying power. By improving an anode material and an anode piece, not only can the heat stability of the anode material be improved, but also the internal resistance of the pole piece can be reduced, the application to the high power can be satisfied, and the safety is good.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a positive electrode active material of a lithium ion battery, a positive electrode material, a positive electrode material slurry, a positive electrode sheet, a preparation method thereof, and a lithium ion battery. Background technique [0002] Although the electric vehicle industry has developed rapidly in recent years, there are still major hidden dangers behind it. The biggest problem is the safety of lithium-ion batteries. There are many factors that affect the safety of lithium-ion batteries. The most direct two factors are material heat Stability and temperature rise during use lead to heat accumulation, especially under high rate (power) charge and discharge, the temperature rise increases exponentially. [0003] Based on national policies and market (consumer) needs, in order to ensure the endurance of electric vehicles, major battery factories are current...

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
IPC IPC(8): H01M4/36H01M4/505H01M4/525H01M4/58H01M4/131H01M4/136H01M4/1391H01M4/1397H01M4/66H01M10/42H01M10/0525
CPCH01M4/131H01M4/136H01M4/1391H01M4/1397H01M4/364H01M4/505H01M4/525H01M4/5825H01M4/663H01M4/667H01M10/0525H01M10/4235Y02E60/10
Inventor 叶邦斌汪小云杨建国许俊
Owner SHANGHAI HUAPU AUTOMOBILE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products