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NiCo2O4 nano-material as well as preparation method and application thereof

A nanomaterial, nickel cobalt oxide technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of uneven distribution of nickel cobalt oxide particles, complicated and complicated production methods, poor dispersibility, etc. The effect of large-scale production, simple preparation method and large specific surface area

Active Publication Date: 2016-03-16
安徽富锂新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the methods for preparing nickel cobaltate have been reported in the literature: high-temperature solid-phase method, sol-gel method, mechanochemical synthesis method, liquid phase chemical precipitation method, etc., but the nickel cobaltate particles prepared by such methods are unevenly distributed , the dispersibility is not good, the output is low, and the production method is more cumbersome and complicated

Method used

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  • NiCo2O4 nano-material as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method step of nickel cobalt oxide nano material of the present invention is as follows:

[0024] (1) 2.9gNi(NO 3 ) 2 ·6H 2 O (containing 0.01mol of nickel ions) and 5.8g Co (NO 3 ) 2 ·6H 2 O (containing 0.02 mol of cobalt ion) was dissolved in a mixed solvent of 1,2-propanediol, 1,3-propanediol and water, the volume of 1,2-propanediol was 3ml, the volume of 1,3-propanediol was 1ml, deionized The volume of water is 36ml, then add 6.0g urea to it and make it dissolve completely, obtain mixed solution;

[0025] (2) Transfer the obtained mixed solution to a reaction kettle, heat it to 145°C and react at a constant temperature for 19 hours, the stirring speed is 270r / min, and the stirring process is stirred with a magnet; after the reaction is completed, the precursor solution is cooled to room temperature, and the The obtained product was washed 3 times with deionized water, then washed 3 times with absolute ethanol, and dried at a constant temperatur...

Embodiment 2

[0029] The preparation method step of nickel cobalt oxide nano material of the present invention is as follows:

[0030] (1) 2.9gNi(NO 3 ) 2 ·6H 2 O (containing 0.01mol of nickel ions) and 5.8g Co (NO 3 ) 2 ·6H 2 O (containing 0.02mol of cobalt ions) was dissolved in a mixed solvent of 1,2-propanediol, 1,3-propanediol and water, the volume of 1,2-propanediol was 3.9ml, the volume of 1,3-propanediol was 1.3ml, The volume of deionized water is 34.8ml, then add 7.2g urea to it and make it dissolve completely, obtain mixed solution;

[0031] (2) Transfer the obtained mixed solution to a reaction kettle, heat it to 160°C and react at a constant temperature for 15 hours, the stirring speed is 250r / min, and the stirring process is stirred with a magnet; after the reaction is completed, the precursor solution is cooled to room temperature, and the The obtained product was first washed with deionized water for 3 times, then washed with absolute ethanol for 3 times, and dried at a...

Embodiment 3

[0035] The preparation method step of nickel cobalt oxide nano material of the present invention is as follows:

[0036] (1) 2.9gNi(NO 3 ) 2 ·6H 2O (containing 0.01mol of nickel ions) and 5.8gCo(NO 3 ) 2 ·6H 2 O (containing 0.02mol of cobalt ions) was dissolved in a mixed solvent of 1,2-propanediol, 1,3-propanediol and water, the volume of 1,2-propanediol was 3.3ml, the volume of 1,3-propanediol was 1.1ml, The volume of deionized water is 35.6ml, then add 8.0g urea to it and make it dissolve completely, obtain mixed solution;

[0037] (2) Transfer the obtained mixed solution to the reaction kettle, heat it to 125°C for 22 hours at a constant temperature, and the stirring speed is 260r / min, and the stirring process is to stir with a magnet; after the reaction is completed, the precursor solution is cooled to room temperature, and the The obtained product was first washed with deionized water for 3 times, then washed with absolute ethanol for 3 times, and dried at a consta...

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Abstract

The invention provides a preparation method of a NiCo2O4 nano-material. The method comprises steps as follows: (1) Ni(NO3)2*6H2O and Co(NO3)2*6H2O are dissolved in a mixed solvent of 1,2-propylene glycol, 1,3-propylene glycol and water, urea is added to the mixture for full dissolution, and a mixed solution is obtained; (2) the obtained mixed solution react in a reaction kettle at the constant temperature for a certain period of time, is washed and is dried, and a NiCo2O4 nano-material precursor is obtained; (3) after the precursor is subjected to constant-temperature heat treatment in air at the temperature of 290-330 DEG C, the NiCo2O4 nano-material is obtained. The invention further provides the NiCo2O4 nano-material prepared with the method as well as an application of the NiCo2O4 nano-material to preparation of a supercapacitor electrode. The NiCo2O4 nano-material is subjected to charge and discharge tests, when the current density is 1 A / g, the specific capacity is up to a higher value, that is, the specific capacity is up to 1820 F / g, after 3,500 times of the charge and discharge tests, the specific capacity is still kept to be higher than 92%, and the NiCo2O4 nano-material can be used as the supercapacitor electrode material.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a nickel cobaltate nanometer material and its preparation method and application. Background technique [0002] Nickel cobalt oxide (NiCo 2 o 4 ) is an AB with spinel phase structure 2 o 4 Type composite oxide, in its crystal structure, nickel ions occupy octahedral positions, and cobalt ions occupy both octahedral and tetrahedral positions. Compared with single nickel oxide and tricobalt tetroxide, nickel cobaltate itself has better conductivity. In addition, nickel cobaltate has the advantages of high electrochemical performance, low production cost, sufficient raw materials and environmental friendliness, which has attracted the general attention of researchers. Volume 1868) has been reported. At present, the methods for preparing nickel cobaltate have been reported in the literature: high-temperature solid-phase method, sol-gel method, mechanoche...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/00B82Y30/00
CPCY02E60/10
Inventor 林展刘培杨高学会李高然许阳阳李全国
Owner 安徽富锂新能源科技有限公司
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