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Preparation method of carbon-containing spherical nickel hydroxide composite material used for alkali secondary battery

A spherical nickel hydroxide, secondary battery technology, applied in alkaline storage batteries, nanotechnology for materials and surface science, battery electrodes, etc. Capacity reduction and other issues, to achieve high specific capacity, improve electrical conductivity and cycle stability, and long service life.

Inactive Publication Date: 2018-05-18
宁波高新区锦众信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under the condition of high current charge and discharge, the electrochemical reaction is mainly concentrated on the surface layer of nickel hydroxide particles. Because of the high resistance of nickel hydroxide, the active material deep inside the particles is difficult to obtain under such conditions. Fully utilized, so the specific capacity of charge and discharge is reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 Preparation of Carbon-containing Spherical Nickel Hydroxide Composite Material for Alkaline Secondary Battery

[0025] (1) Preparation of porous nano-carbon materials

[0026] Take resorcinol and formaldehyde and mix uniformly, then add depurified water and mix uniformly, obtain carbon source precursor solution, wherein, the mol ratio of described resorcinol and formaldehyde is 1:3, resorcinol-formaldehyde is in The mass fraction in the carbon precursor solution is 40-50wt%; weigh ethyl orthosilicate, methanol, purified water, and sulfuric acid and mix them uniformly to obtain a silicon source precursor solution, wherein, ethyl orthosilicate, methanol, purified water, and sulfuric acid The mass ratio is 3:1:1:0.2, and the concentration of sulfuric acid is 2mol / L; then the above-mentioned silicon source precursor solution and the above-mentioned carbon source precursor solution are mixed uniformly at a mass ratio of 1:3 to obtain a carbon source-silicon sour...

Embodiment 2

[0033] Embodiment 2 Preparation of carbon-containing spherical nickel hydroxide composite material for alkaline secondary battery

[0034] (1) Preparation of porous nano-carbon materials

[0035] Take resorcinol and formaldehyde and mix uniformly, then add depurified water and mix uniformly, obtain carbon source precursor solution, wherein, the mol ratio of described resorcinol and formaldehyde is 1:4, and resorcinol-formaldehyde is in The mass fraction in the carbon precursor solution is 40-50wt%; weigh ethyl orthosilicate, methanol, purified water, and sulfuric acid and mix them uniformly to obtain a silicon source precursor solution, wherein, ethyl orthosilicate, methanol, purified water, and sulfuric acid The mass ratio is 3:2:2:0.3, and the concentration of sulfuric acid is 3mol / L; then the above-mentioned silicon source precursor solution and the above-mentioned carbon source precursor solution are mixed uniformly at a mass ratio of 1:5 to obtain a carbon source-silicon ...

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PUM

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Abstract

The invention discloses a preparation method of a carbon-containing spherical nickel hydroxide composite material used for an alkali secondary battery. The preparation method comprises the following steps of (1) performing uniform mixing on a silicon source precursor solution and a carbon source precursor solution to obtain a carbon source-silicon source mixed solution; and adding colloidal crystal to be mixed and carbonized to obtain a porous carbon nanomaterial; (2) preparing a mixed solution from nickel chloride, gadolinium sulfate, cobaltous sulfate and deionized water; (3) performing mixing on the porous carbon nanomaterial and a nickel salt mixed solution; and (4) adding a sodium hydroxide solution to the mixed solution, performing stirring and reacting, then performing aging on theobtained precipitates, carrying out washing until the product is neutral, and then performing drying to obtain the finished product of the carbon-containing spherical nickel hydroxide composite material. By virtue of the spherical nickel hydroxide composite material used for the alkali secondary battery prepared by the invention, the conductivity and cycle stability are greatly improved; and whenthe spherical nickel hydroxide composite material is used for the alkali secondary battery, the battery obtains high specific capacity and relatively long service life.

Description

technical field [0001] The invention relates to the field of manufacturing alkaline secondary batteries, in particular to a method for preparing a carbon-containing spherical nickel hydroxide composite material for alkaline secondary batteries. Background technique [0002] With the advancement of science and technology, people's demand for mobile energy is becoming stronger and stronger, especially for pure electric vehicles. With the aggravation of the oil and environmental crisis, the demand is continuously strengthened. At present, whether it can break through the low-cost, safe, environment-friendly, and superior-performance secondary chemical power supply technology has become a bottleneck restricting the development of pure electric vehicles. Alkaline nickel-hydrogen batteries are known as the preferred power storage batteries for electric vehicles because of their excellent comprehensive characteristics such as high energy density, long cycle life, fast charge and di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/52H01M4/62H01M10/30B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/366H01M4/52H01M4/625H01M10/30Y02E60/10
Inventor 蒋玛丽
Owner 宁波高新区锦众信息科技有限公司