Negative electrode material for lithium ion power and energy storage battery, preparation method thereof, and battery

A technology for energy storage batteries and negative electrode materials, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems affecting the performance of negative electrode materials, poor liquid absorption capacity, small specific surface area, etc., to improve the liquid absorption and retention capacity, Improve the effect of gram capacity and specific surface area

Inactive Publication Date: 2016-03-30
JIAOZUO JUNENG ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the negative electrode materials used in the market are mainly coated with pitch, petroleum coke, phenolic resin, etc. The preparation materials have defects such as small specific surface area, poor liquid absorption capacity, poor coating consistency, and general rate performance, which affect the negative electrode. Further improvement of material performance
Although researchers (patent CN102169988A) have prepared a composite graphite material with a porous structure carbon material coating through a series of processes such as graphite and pitch mixing, cross-linking reaction, and high-temperature oxidation, although in terms of gram capacity, first-time efficiency, and liquid absorption The ability has been improved, but the porous structure has defects such as low compaction density, poor rate performance and difficult control of consistency

Method used

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  • Negative electrode material for lithium ion power and energy storage battery, preparation method thereof, and battery
  • Negative electrode material for lithium ion power and energy storage battery, preparation method thereof, and battery
  • Negative electrode material for lithium ion power and energy storage battery, preparation method thereof, and battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Take 5g of iron particles with a particle size of 200 μm, 10g of LA132 and 50g of twice distilled water and stir at high speed for 2 hours, then add 30g of artificial graphite composite materials (10g of spherical graphite, 10g of flake graphite, 10g of fibrous graphite) and 50g of distilled water sub-distilled water, and continue to stir at high speed for 2 hours, and dry at 200°C for 1 hour, and pulverize to obtain a mixed material;

[0028] 2) Add 5g of pitch and 200ml of anhydrous carbon tetrachloride solution successively in a 250ml volumetric flask, and stir until the pitch is completely dissolved to obtain a pitch-based carbon tetrachloride solution; 20g of anhydrous aluminum trichloride is placed in the reaction kettle, Then add 50ml of anhydrous carbon tetrachloride solution until the anhydrous aluminum trichloride dissolves, then add the asphalt-based carbon tetrachloride solution, and stir at a temperature of 50°C, and Friedel-Crafts reaction for 24 hours t...

Embodiment 2

[0031] 1) Weigh 1g of nickel chloride catalyst with a particle size of 200 μm, 1gLA132 binder and 40g of double distilled water by high-speed stirring for 2 hours, then add 20g of artificial graphite composite material (spherical graphite 8g, flake graphite 6g, fibrous graphite 6g) and 60g of double-distilled water, and continued to stir at high speed for 2 hours, and dried at 200°C for 1 hour, and pulverized to obtain a mixed material;

[0032]2) Add 2g of asphalt and 100ml of anhydrous carbon tetrachloride solution successively in a 250ml volumetric flask, and stir until the asphalt is completely dissolved to obtain a pitch-based carbon tetrachloride solution; 10g of anhydrous aluminum trichloride is placed in the reaction kettle, Then add 30ml of anhydrous carbon tetrachloride solution until the anhydrous aluminum trichloride dissolves, then add the asphalt-based carbon tetrachloride solution, and stir at a temperature of 50°C, and Friedel-Crafts reaction for 24 hours to obt...

Embodiment 3

[0035] 1) Weigh 1g of cobalt chloride catalyst with a particle size of 200 μm, 1gLA132 binder and 40g of double distilled water by high-speed stirring for 2 hours, then add 20g of artificial graphite composite material (spherical graphite 7g, flake graphite 6g, fibrous graphite 7g) and 60g of double-distilled water, and continued high-speed stirring for 2 hours, and dried at 200°C for 1 hour, and pulverized to obtain a mixed material;

[0036] 2) Add 2g of asphalt and 100ml of anhydrous carbon tetrachloride solution successively in a 250ml volumetric flask, and stir until the asphalt is completely dissolved to obtain a pitch-based carbon tetrachloride solution; 10g of anhydrous aluminum trichloride is placed in the reaction kettle, Then add 30ml of anhydrous carbon tetrachloride solution until the anhydrous aluminum trichloride dissolves, then add the asphalt-based carbon tetrachloride solution, and stir at a temperature of 50°C, and Friedel-Crafts reaction for 24 hours to obta...

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Abstract

The invention belongs to the field of preparation processes of lithium batteries and particularly relates to a negative pole material for a lithium ion power and energy storage battery, as well as a preparation method and a battery thereof. Based on the insufficiencies in modification of the negative pole material in the prior art, a mixed solution of a binder and a catalyst is firstly configured, and graphite-like materials with different structures are uniformly mixed to form a graphite mixed body with different graphite structure types and close combination; then a porous coated carbon material is prepared by Friedel-Crafts cross-linking reaction, and coating, carbonization, crushing and other treatment are performed on the graphite mixed body, thus the negative pole material with high compaction density, strong liquid absorption capability, excellent rate performance and good cycling performance is finally prepared.

Description

technical field [0001] The invention belongs to the field of lithium battery preparation technology, and in particular relates to a negative electrode material for lithium ion power and energy storage batteries, a preparation method thereof and a battery. Background technique [0002] The negative electrode material is the main component of the lithium-ion battery, and its performance affects the cycle performance, rate performance and consistency of the battery. At present, the negative electrode materials used in the market are mainly coated with pitch, petroleum coke, phenolic resin, etc. The preparation materials have defects such as small specific surface area, poor liquid absorption capacity, poor coating consistency, and general rate performance, which affect the negative electrode. Further improvement of material performance. Although researchers (patent CN102169988A) have prepared a composite graphite material with a porous structure carbon material coating through...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/587
CPCH01M4/587H01M10/0525Y02E60/10
Inventor 和百正郭爱霞和明刚
Owner JIAOZUO JUNENG ENERGY TECH
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