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Carbon cloth-loaded carbon-coated nickel disulfide nanosheet composite material and preparation method and application thereof

A composite material, nickel disulfide technology, applied in the field of nanomaterials and electrochemistry, to achieve good cycle performance, good capacity retention, and excellent cycle stability

Inactive Publication Date: 2020-08-25
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, nickel sulfide and nickel disulfide have been studied as aluminum ion cathode materials, but nickel disulfide has not been reported as aluminum ion cathode materials.

Method used

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  • Carbon cloth-loaded carbon-coated nickel disulfide nanosheet composite material and preparation method and application thereof
  • Carbon cloth-loaded carbon-coated nickel disulfide nanosheet composite material and preparation method and application thereof
  • Carbon cloth-loaded carbon-coated nickel disulfide nanosheet composite material and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation method of the carbon-coated nickel disulfide nanosheet composite material supported by carbon cloth, it comprises the steps:

[0031] 1) Take 0.9 g of nickel nitrate hexahydrate and 0.56 g of hexamethylenetetramine, dissolve them in 80 ml of deionized water, and stir until completely dissolved.

[0032] 2) Put the carbon cloth into the solution obtained in step 1), and conduct a hydrothermal reaction at 100° C. for 10 h.

[0033] 3) Wash and dry the product obtained in step 2) to obtain the precursor (Ni(OH) 2 -CF).

[0034] 4) Aniline: tartaric acid: the precursor (Ni(OH) calculated in step 3) 2 -CF) was dissolved in 150ml of deionized water at a molar ratio of 3:5:3, and ultrasonicated in an ice-water bath for 30 minutes.

[0035] 5) In the solution obtained in step 4), add 0.2mol L of pre-cooled in ice water -1 Ammonium persulfate aqueous solution 50ml, the system was placed in ice-water bath for 6h.

[0036] 6) Wash the product obtained in step ...

Embodiment 2

[0041] 1) Take 2.3 g of nickel nitrate hexahydrate and 1.4 g of hexamethylenetetramine, dissolve them in 80 ml of deionized water, and stir until completely dissolved.

[0042] 2) Put the carbon cloth into the solution obtained in step 1), and conduct a hydrothermal reaction at 100° C. for 10 h.

[0043] 3) Wash the product obtained in step 2) and dry it to obtain the precursor (Ni(OH) 2 -CF).

[0044] 4) Aniline: tartaric acid: the precursor (Ni(OH) calculated in step 3) 2 -CF) was dissolved in 150ml of deionized water at a molar ratio of 3:5:3, and ultrasonicated in an ice-water bath for 30 minutes.

[0045] 5) In the solution obtained in step 4), add 0.2mol L of pre-cooled in ice water -1 Ammonium persulfate aqueous solution 50ml, the system was placed in ice-water bath for 6h.

[0046] 6) Wash the product obtained in step 5) with deionized water, and dry it in a vacuum oven at 60°C to obtain a polyaniline-coated nickel precursor composite material (Ni(OH) 2 @PANI-CF);...

Embodiment 3

[0050] 1) Take 0.9 g of nickel nitrate hexahydrate and 0.56 g of hexamethylenetetramine, dissolve them in 80 ml of deionized water, and stir until completely dissolved.

[0051] 2) Put the carbon cloth into the solution obtained in step 1), and conduct a hydrothermal reaction at 100° C. for 10 h.

[0052] 3) Wash and dry the product obtained in step 2) to obtain the precursor (Ni(OH) 2 -CF).

[0053] 4) Aniline: tartaric acid: the precursor (Ni(OH) calculated in step 3) 2 -CF) was dissolved in 150ml of deionized water at a molar ratio of 6:5:3, and ultrasonicated in an ice-water bath for 30 minutes.

[0054] 5) In the solution obtained in step 4), add 0.2mol L of pre-cooled in ice water -1 Ammonium persulfate aqueous solution 50ml, the system was placed in ice-water bath for 6h.

[0055] 6) Wash the product obtained in step 5) with deionized water, and dry it in a vacuum oven at 60°C to obtain a polyaniline-coated nickel precursor composite material (Ni(OH) 2 @PANI-CF); ...

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Abstract

The invention relates to a carbon cloth-loaded carbon-coated nickel disulfide nanosheet composite material and a preparation method thereof. A carbon cloth-loaded nickel precursor nanosheet is prepared through a hydrothermal in-situ growth method, the precursor is coated with polyaniline, and vulcanizing is conducted in a nitrogen sealed atmosphere to obtain the carbon cloth-loaded carbon-coated nickel disulfide nanosheet composite material. The nickel disulfide nanosheet is formed by assembling small nickel disulfide particles of 10-15 nanometers, and the thickness of the nanosheet is 10-50 nanometers. The composite material shows good electrochemical performance when being used as an aluminum ion positive electrode material, and can be used as a potential application material of the aluminum ion battery positive electrode material with long service life, excellent cycling stability and high rate.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and electrochemistry, in particular to a carbon-coated nickel disulfide nanosheet composite material (NiS 2 @PANI-CF) and its preparation method, the material can be used as a potential application material for long-life, excellent cycle stability aluminum-ion battery cathode materials. Background technique [0002] At present, lithium-ion batteries have received extensive attention due to their high energy density and charge-discharge cycle stability, and have achieved commercial applications. With the increase in mass production of lithium-ion batteries, problems such as limited lithium reserves and high prices have become increasingly prominent. It is imminent to develop a new type of battery with wide sources of raw materials, lower price and better performance. With the rapid development of portable charging equipment and electric vehicles (EV), the development of new high-performance...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/58H01M4/62H01M10/054C01B32/05C01G53/11B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G53/11C01P2002/72C01P2004/03C01P2004/04C01P2004/64C01P2004/80C01P2006/40C01B32/05H01M4/366H01M4/5815H01M4/625H01M10/054H01M2004/021H01M2004/028Y02E60/10
Inventor 安琴友段美江麦立强
Owner WUHAN UNIV OF TECH
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