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A kind of cobalt disulfide material with high storage stability and its preparation method and application

A technology for storage stability and cobalt disulfide, which is applied in the field of cobalt disulfide materials and its preparation, to achieve the effects of performance improvement, high storage stability, and improved storage stability

Active Publication Date: 2020-12-29
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] An object of the present invention is to provide a cobalt disulfide material with high storage stability and a preparation method thereof. The method generates a layer of shell structure on the surface of the cobalt disulfide material to solve the problem that it is easy to decompose, greatly improving Its storage stability, the cobalt disulfide material with high storage stability is used as an electrode material in thermal batteries, lithium batteries, solar batteries and super capacitors, greatly improving the performance of the above products, and has broad application prospects

Method used

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  • A kind of cobalt disulfide material with high storage stability and its preparation method and application

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Embodiment 1

[0032] A preparation method of a cobalt disulfide material with high storage stability, comprising:

[0033] Configure cobalt disulfide precursor replacement solution: mix 0.05mol citric acid, 0.05molFeCl 2 Dissolve in 100ml deionized water, stir evenly to obtain cobalt disulfide precursor replacement solution;

[0034] 0.05molCoS 2 Add to the above-mentioned cobalt disulfide precursor replacement solution, stir evenly, and make a suspension;

[0035] Pour the suspension into a high-pressure reactor, and keep it warm for 24 hours at 200°C and 40Mpa;

[0036] After the mixture in the cooled autoclave was cleaned and centrifugally filtered, it was dried in a vacuum oven at 80°C for 24 hours to obtain CoS with a shell structure. 2 Material.

Embodiment 2

[0038] A preparation method of a cobalt disulfide material with high storage stability, comprising:

[0039] Configure cobalt disulfide precursor replacement solution: citric acid (0.2mol), sulfuric acid (0.01mol), MnCl 2 (0.1mol) is dissolved in the mixed solvent of 100ml ethylene glycol, glycerol and butylene glycol, stirs, obtains cobalt disulfide precursor replacement solution; Wherein, the volume ratio of ethylene glycol, glycerol and butylene glycol is 2:1:1;

[0040] 0.1molCoS 2 Add to the above-mentioned cobalt disulfide precursor replacement solution, stir evenly, and make a suspension;

[0041] Pour the suspension into an autoclave, and keep it warm for 30 hours at 180°C and 60Mpa;

[0042] After the mixture in the cooled autoclave was cleaned and centrifugally filtered, it was dried in a vacuum oven at 80°C for 24 hours to obtain CoS with a shell structure. 2 Material.

Embodiment 3

[0044] A preparation method of a cobalt disulfide material with high storage stability, comprising:

[0045] Configure cobalt disulfide precursor replacement solution: citric acid (0.1mol), sulfuric acid (0.02mol), Ni 2 SO 4(0.1mol) is dissolved in the mixed solvent of 100ml ethylene glycol, glycerol, butylene glycol and water, stirs, obtains cobalt disulfide precursor replacement solution; The volume of ethylene glycol, glycerol, butylene glycol and water 1:1:1:3;

[0046] 0.15molCoS 2 Add to the above-mentioned cobalt disulfide precursor replacement solution, stir evenly, and make a suspension;

[0047] Pour the suspension into a high-pressure reactor, and keep it warm for 48 hours at 240°C and 10Mpa;

[0048] After the mixture in the cooled autoclave was cleaned and centrifugally filtered, it was dried in a vacuum oven at 80°C for 24 hours to obtain CoS with a shell structure. 2 Material.

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Abstract

The invention relates to the technical field of preparation of pole materials and particularly relates to a cobalt disulfide material with high storage stability and a preparation method and application thereof. The method comprises the steps: preparing a cobalt disulfide replacement reactant; mixing the cobalt disulfide replacement reactant with cobalt disulfide, and carrying out a reaction for 0.5 to 72 hours at the temperature of 120 DEG C to 600 DEG C while preserving heat, thereby preparing the cobalt disulfide material. According to the cobalt disulfide material with high storage stability and the preparation method and application thereof, a layer of protective layer structure can be formed on the surface of cobalt disulfide in a replacement manner under specific process conditions,so that the storage stability of the cobalt disulfide is greatly improved, performance of batteries is greatly improved when the cobalt disulfide is applied to products such as thermal batteries andlithium batteries as, and the cobalt disulfide material has a huge application prospect.

Description

technical field [0001] The invention relates to the technical field of electrode material preparation, in particular to a cobalt disulfide material with high storage stability, a preparation method and application thereof. Background technique [0002] CoS 2 As a kind of sulfide with good conductivity, it has excellent electrical, magnetic and catalytic properties, and has a wide range of applications in thermal batteries, lithium batteries, solar batteries, supercapacitors and other fields. Currently, CoS 2 The synthesis and preparation mainly adopts the solid phase method, and it is made by high-temperature calcination and desulfurization process of metal cobalt and excess sulfur element. [0003] However, CoS synthesized by solid-phase method 2 containing H 2 O, O 2 During environmental storage, it is easy to decompose and generate CoSO 4 ·H 2 O, significantly reduces its electrical and magnetic catalytic properties, significantly affects its long-term stability, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G51/00
CPCC01G51/30C01P2002/72
Inventor 曹勇余天浪刘效疆余志勇崔益秀
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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