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Preparation method of MXene/NiCoP/NF composite material

A composite material and solution technology, which is applied in the field of preparation of MXene/NiCoP/NF composite materials, can solve problems such as environmental impact and destruction of ecosystems, and achieve the effect of improving performance and reducing production costs.

Pending Publication Date: 2021-07-09
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Energy is used in all aspects of human survival and development, but it is like a double-edged sword. While benefiting human life, it also has a negative impact on human production and life
Fossil fuels (petroleum, coal and natural gas, etc.) are the main energy sources in the current society, but they contain a large amount of impurities such as nitrogen, phosphorus, sulfur, etc., and will produce a large amount of harmful gases (SO 2 , SO 3 , NO, NO 2 ), causing adverse impacts on the environment, thereby destroying the ecosystem

Method used

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  • Preparation method of MXene/NiCoP/NF composite material
  • Preparation method of MXene/NiCoP/NF composite material
  • Preparation method of MXene/NiCoP/NF composite material

Examples

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preparation example Construction

[0028] refer to Figure 1-5 , a preparation method of MXene / NiCoP / NF composite material, comprising: S1, taking lithium fluoride and hydrochloric acid solution, magnetic stirring in polytetrafluoroethylene reactor;

[0029] S2, take Ti 3 AlC 2 Slowly add to the solution in step S1, and stir magnetically under water bath conditions;

[0030] S3, ultrasonically dispersing the solution in step S2, and then centrifugally washing with deionized water until neutral;

[0031] S4. Centrifuge the neutral solution washed in step S3 with absolute ethanol, and collect the dark green supernatant;

[0032] S5. Freeze-dry the above dark green solution for 48 hours to obtain MXene.

[0033] S6. Cut the nickel foam into 2*4cm 2 , soaked in acetone solution and hydrochloric acid solution respectively, then cross-washed with deionized water and absolute ethanol, and dried in a vacuum drying oven;

[0034] S7, take step S5 to prepare 10 mg of MXene, then dissolve 1 mmol of nickel nitrate he...

Embodiment 1

[0043] This embodiment provides a method for preparing a MXene / NiCoP / NF composite material, the specific steps are as follows:

[0044] 1) Take 1g of lithium fluoride and 9M 20mL hydrochloric acid solution, and magnetically stir at 400rpm in a polytetrafluoroethylene reactor for 30 minutes;

[0045] 2) Take 1g Ti 3 AlC 2 Slowly add to the solution in 1), and stir magnetically for 24 hours in a water bath at 40°C; 3) Disperse the solution in 2) by ultrasonic (750W) for 1 hour, then centrifuge with deionized water (8000rpm) and wash until neutral;

[0046] 4) Centrifuge the solution neutralized in 3) with absolute ethanol (3500rpm), and collect the dark green supernatant;

[0047] 5) The above dark green solution was freeze-dried for 48 hours to obtain MXene. 6) Cut the nickel foam into 2*4cm 2 , soaked in acetone solution and 2M hydrochloric acid solution for 30 minutes, then cross-washed 6 times with deionized water and absolute ethanol, and dried in a vacuum oven for 12 h...

Embodiment 2

[0050] This embodiment provides a method for preparing a MXene / NiCoP / NF composite material, the specific steps are as follows:

[0051] 1) Take 1g of lithium fluoride and 9M 20mL hydrochloric acid solution, and magnetically stir at 400rpm in a polytetrafluoroethylene reactor for 30 minutes;

[0052] 2) Take 1g Ti 3 AlC 2 Slowly add to the solution in 1), and stir magnetically for 24 hours in a water bath at 40°C; 3) Disperse the solution in 2) by ultrasonic (750W) for 1 hour, then centrifuge with deionized water (8000rpm) and wash until neutral;

[0053] 4) Centrifuge the solution neutralized in 3) with absolute ethanol (3500rpm), and collect the dark green supernatant;

[0054] 5) The above dark green solution was freeze-dried for 48 hours to obtain MXene.

[0055] 6) Cut the nickel foam into 2*4cm 2 , respectively soaked in acetone solution and 2M hydrochloric acid solution for 30 minutes, then cross-washed 6 times with deionized water and absolute ethanol, and dried in ...

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Abstract

The invention discloses a preparation method of an MXene / NiCoP / NF composite material. The preparation method comprises the following steps: firstly, preparing a solution with the same etching effect as hydrofluoric acid from a certain amount of lithium fluoride and hydrochloric acid, and then slowly putting Ti3AlC2 into the solution for etching to obtain an MXene material; and dissolving the prepared MXene material, nickel salt and cobalt salt into deionized water and ethanol in a certain proportion, stirring for a certain time, putting the obtained mixed solution and foamed nickel into a reaction kettle, carrying out hydrothermal reaction, drying, putting the obtained material, putting the dried material and sodium hypophosphite monohydrate into a tubular furnace, and annealing in argon to obtain the MXene / NiCoP / NF composite material. According to the invention, the preparation process is simple, the cost is low, the safety is high, the prepared material has excellent electrochemical performance, and the defects of complex process, high cost and poor electrochemical performance of the electrode material in the prior art are effectively overcome.

Description

technical field [0001] The invention relates to the technical field of composite material preparation, in particular to a preparation method of MXene / NiCoP / NF composite material. Background technique [0002] Energy is used in all aspects of human survival and development, but it is like a double-edged sword. While benefiting human life, it also has a negative impact on human production and life. Fossil fuels (petroleum, coal, and natural gas, etc.) are the main energy sources in the current society, but they contain a large amount of impurities such as nitrogen, phosphorus, and sulfur, and a large amount of harmful gases (SO 2 , SO 3 , NO, NO 2 ), causing adverse impacts on the environment and destroying the ecosystem. At the same time, fossil fuel is a non-renewable resource, and excessive and unreasonable exploitation and use will always cause energy depletion. Therefore, it is of great practical significance to find a clean energy source that is non-polluting, renewab...

Claims

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Application Information

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IPC IPC(8): H01G11/86
CPCH01G11/86
Inventor 李生娟夏营港董永光于沺沺洛江红薛裕华
Owner UNIV OF SHANGHAI FOR SCI & TECH
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