Preparation method of novel high-rate ternary nickel-cobalt-aluminum power battery

A power battery, nickel-cobalt-aluminum technology, which is applied in the field of preparation of new high-rate ternary nickel-cobalt-aluminum power batteries, can solve the problems of poor overall battery performance, gram capacity of lithium iron phosphate battery, inability to improve working voltage, and weak battery life and other issues, to achieve excellent low-temperature performance, facilitate charging and discharging, and increase the effect of electrical conductivity

Active Publication Date: 2018-05-18
珠海聚碳复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the shortcomings of current new energy vehicle batteries such as poor comprehensive performance and weak battery life, Publication No. 106784812A improves the preparation method of lithium iron phosphate batteries to make the batteries have the advantages of fast charging and low temperature use
However, the gram capacity and working voltage of lithium iron phosphate batteries still cannot be improved

Method used

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  • Preparation method of novel high-rate ternary nickel-cobalt-aluminum power battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Ingredients: Prepare the raw materials according to the active material of the above-mentioned battery and its parts by weight. The positive electrode active material includes the following parts by weight: 93 parts of ternary nickel-cobalt-aluminum material, 3.5 parts of positive electrode conductive agent, 4 parts of polyvinylidene fluoride, Wherein, the positive electrode conductive agent includes the following components in parts by weight: 50 parts of graphene, 20 parts of carbon black, 20 parts of large particle graphite powder, and 10 parts of multi-walled carbon nanotubes; the negative electrode active material includes the following components in parts by weight : 92 parts of artificial graphite, 3 parts of water-based binder, 1.5 parts of carbon black, and 3 parts of styrene-butadiene rubber, wherein the water-based binder is sodium carboxymethyl cellulose, and carbon black is a negative electrode conductive agent.

[0031] Preparation of positive electrode act...

Embodiment 2

[0036] Ingredients: Prepare the raw materials according to the above-mentioned active material of the battery and its parts by weight. The positive electrode active material includes the following parts by weight: 90 parts of ternary nickel-cobalt-aluminum material, 3 parts of positive electrode conductive agent, 3 parts of polyvinylidene fluoride, Wherein, the positive electrode conductive agent includes the following components by weight: 45 parts of graphene, 16 parts of carbon black, 16 parts of large particle graphite powder, and 8 parts of multi-walled carbon nanotubes; the negative electrode active material includes the following components by weight : 90 parts of artificial graphite, 2 parts of water-based binder, 1 part of carbon black, and 2 parts of styrene-butadiene rubber, wherein the water-based binder is sodium carboxymethyl cellulose, and carbon black is a negative electrode conductive agent.

[0037] Preparation of positive electrode active material: first mix po...

Embodiment 3

[0042] Ingredients: Prepare the raw materials according to the active material of the above-mentioned battery and its parts by weight. The positive electrode active material includes the following parts by weight: 95 parts of ternary nickel-cobalt-aluminum material, 4 parts of positive electrode conductive agent, 5 parts of polyvinylidene fluoride, Wherein, the positive electrode conductive agent includes the following components by weight: 55 parts of graphene, 24 parts of carbon black, 24 parts of large particle graphite powder, and 12 parts of multi-walled carbon nanotubes; the negative electrode active material includes the following components by weight : 94 parts of artificial graphite, 4 parts of water-based binder, 2 parts of carbon black, and 4 parts of styrene-butadiene rubber, wherein the water-based binder is sodium carboxymethyl cellulose, and carbon black is a negative electrode conductive agent.

[0043] Preparation of positive electrode active material: first mi...

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Abstract

The invention discloses a preparation method of a novel high-rate ternary nickel-cobalt-aluminum power battery and belongs to the technical field of new energy. The battery comprises a positive activematerial and a negative active material, wherein the positive active material is prepared from the following components in parts by weight: 90-95 parts of ternary nickel-cobalt-aluminum material, 3-4parts of a positive conductive agent and 3-5 parts of polyvinylidene fluoride; and the negative active material is prepared from the following components in parts by weight: 90-94 parts of artificialgraphite, 2-4 parts of a water-based binder, 1-2 parts of carbon black and 2-4 parts of styrene-butadiene rubber. The positive active material obtained through the modes of feeding step by step and stirring for multiple times is different from other battery materials, and has the characteristics of being more delicate in materials and more excellent in performance; and meanwhile, the negative active material is not formed by simply mixing an adhesive with the conductive agent and the viscosity is adjusted through adding deionized water, so that the negative active material can be better laminated with the positive active material, and charging and discharging of the battery are facilitated.

Description

technical field [0001] The invention belongs to the technical field of new energy, and in particular relates to a preparation method of a novel high-rate ternary nickel-cobalt-aluminum power battery. Background technique [0002] The 21st century will enter the era of hybrid electric vehicles (HEV) and electric vehicles (EV). Among the existing power batteries for new energy vehicles, the production cost of lithium-ion batteries is relatively low, and it is very convenient to recharge and utilize. Compared with other portable energy sources, it has a higher cost advantage. Therefore, this type of battery has become the most popular power source at present. The global lithium-ion battery market has maintained continuous positive growth, and the demand for power lithium-ion batteries has also shown a continuous growth trend. [0003] In recent years, my country's lithium-ion battery industry (including batteries, positive and negative electrode materials, separators, electrol...

Claims

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Application Information

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IPC IPC(8): H01M10/0525H01M10/058H01M4/36H01M4/485H01M4/525H01M4/587H01M4/62H01M4/04
CPCH01M4/04H01M4/362H01M4/485H01M4/525H01M4/587H01M4/621H01M4/623H01M4/625H01M10/0525H01M10/058H01M2220/20Y02E60/10Y02P70/50
Inventor 陈小刚
Owner 珠海聚碳复合材料有限公司
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