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Preparation method of nitrogen and phosphorus co-doped foamed carbon nanosheet loaded NiCo nanoparticle composite material, product and application thereof

A technology of carbon nanosheets and nanoparticles, which is applied in the field of foamy carbon nanosheets loaded NiCo nanoparticle composite materials and its preparation, can solve the problems of high preparation cost, unsatisfactory activity and stability, and complicated process of electrolytic water catalysts. Achieve the effects of promoting rapid transport, increasing the rate of catalytic reaction, and simple operation

Active Publication Date: 2020-12-11
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Purpose of the invention: Aiming at the problems existing in the prior art, the present invention provides a method for preparing a highly porous and flexible foamed carbon nanosheet loaded with NiCo nanoparticle composite material co-doped with nitrogen and phosphorus. The method of the present invention is simple, universal and low in cost , and the prepared highly porous and flexible foamed carbon nanocomposites loaded with nitrogen and phosphorus co-doped with NiCo alloy nanoparticles show excellent activity and stability as a total water splitting electrocatalyst material, which mainly solves the current electrolytic water catalyst preparation. High cost, complex process, unsatisfactory activity and stability

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  • Preparation method of nitrogen and phosphorus co-doped foamed carbon nanosheet loaded NiCo nanoparticle composite material, product and application thereof
  • Preparation method of nitrogen and phosphorus co-doped foamed carbon nanosheet loaded NiCo nanoparticle composite material, product and application thereof
  • Preparation method of nitrogen and phosphorus co-doped foamed carbon nanosheet loaded NiCo nanoparticle composite material, product and application thereof

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Embodiment 1

[0047] A kind of preparation method of nitrogen-phosphorus co-doped highly porous flexible foamed carbon nanosheet loaded NiCo nano particle composite material, comprising the following steps:

[0048] 1)Ni 2+ / Co 2+ / NaCl / EDTMPA / SA mixed hydrogel preparation: Weigh 0.5g SA, 2.0g NaCl and 40mL H 2 O solution was mixed for 5h to obtain mixed solution A; weigh 0.5mmol Ni(NO 3 ) 2 ·6H 2 O, 0.5mmol Co(NO 3 ) 2 ·6H 2 O solid metal nitrate, 5 mL 0.2M EDTMPA with 5 mL H 2 O is mixed to obtain a mixed solution B; the mixed solution B is added dropwise to the mixed solution A under the condition of stirring to make it evenly mixed, and after standing for 1 hour at room temperature, the mixed hydrogel can be obtained, that is, Ni 2+ / Co 2+ / NaCl / EDTMPA / SA mixed hydrogel;

[0049] 2) NiCo nanoparticle composites loaded with highly porous and flexible foamed carbon nanosheets loaded with nitrogen and phosphorus co-doped by sol-gel method: the light pink Ni 2+ / Co 2+ / NaCl / EDTM...

Embodiment 2

[0053] A kind of preparation method of nitrogen-phosphorus co-doped highly porous flexible foamed carbon nanosheet loaded NiCo nano particle composite material, comprising the following steps:

[0054] 1)Ni 2+ / Co 2+ / NaCl / EDTMPA / SA mixed hydrogel preparation: Weigh 1.0g SA, 2.0g NaCl and 40mL H 2 O solution was mixed for 5h to obtain mixed solution A; weigh 0.5mmol Ni(NO 3 ) 2 ·6H 2 O, 0.5mmol Co(NO 3 ) 2 ·6H 2 O solid metal nitrate, 5 mL 0.2M EDTMPA with 5 mL H 2 O is mixed to obtain a mixed solution B; the mixed solution B is added dropwise to the mixed solution A under the condition of stirring to make it evenly mixed, and after standing for 1 hour at room temperature, the mixed hydrogel that is Ni can be obtained. 2+ / Co 2+ / NaCl / EDTMPA / SA mixed hydrogel;

[0055] 2) NiCo nanoparticle composites loaded with highly porous and flexible foamed carbon nanosheets loaded with nitrogen and phosphorus co-doped by sol-gel method: the light pink Ni2+ / Co 2+ / NaCl / EDTMPA / ...

Embodiment 3

[0057] A kind of preparation method of nitrogen-phosphorus co-doped highly porous flexible foamed carbon nanosheet loaded NiCo nano particle composite material, comprising the following steps:

[0058] 1)Ni 2+ / Co 2+ / NaCl / EDTMPA / SA mixed hydrogel preparation: Weigh 1.5g SA, 2.0g NaCl and 40mL H 2 O solution was mixed for 5h to obtain mixed solution A; weigh 0.5mmol Ni(NO 3 ) 2 ·6H 2 O, 0.5mmol Co(NO 3 ) 2 ·6H 2 O solid metal nitrate, 5 mL 0.2M EDTMPA with 5 mL H 2 O is mixed to obtain a mixed solution B; the mixed solution B is added dropwise to the mixed solution A under the condition of stirring to make it evenly mixed, and after standing for 1 hour at room temperature, the mixed hydrogel that is Ni can be obtained. 2+ / Co 2+ / NaCl / EDTMPA / SA mixed hydrogel;

[0059] 2) NiCo nanoparticle composites loaded with highly porous and flexible foamed carbon nanosheets loaded with nitrogen and phosphorus co-doped by sol-gel method: the light pink Ni 2+ / Co 2+ / NaCl / EDTMP...

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Abstract

The invention discloses a preparation method of a nitrogen and phosphorus co-doped foamed carbon nanosheet loaded NiCo nanoparticle composite material, a product and application thereof. The preparation method comprises the following steps: preparing Ni<2+> / Co<2+> / NaCl / EDTMPA / SA mixed hydrogel; and carrying out freeze drying on the Ni<2+> / Co <2+> / NaCl / EDTMPA / SA mixed hydrogel, and carrying out heat treatment in a high-temperature inert atmosphere to obtain the NiCo alloy nanoparticle-loaded nitrogen and phosphorus co-doped highly porous and flexible foamed carbon nanosheet composite material.According to the invention, the product prepared by the method is regular in morphology, NiCo nanoparticles are uniformly loaded in the two-dimensional composite highly-porous flexible foamed carbon nanosheet in size, and the product has the characteristics of multiple active sites, low overpotential, good stability, a two-dimensional composite structure and the like, is an extremely potential water electrolysis electrocatalyst material, and can be used for preparing the alkaline full-water-splitting reaction electrocatalyst.

Description

technical field [0001] The invention belongs to the technical field of electrocatalysts, and in particular relates to a nitrogen-phosphorus co-doped highly porous and flexible foam-like carbon nanosheet-loaded NiCo nanoparticle composite material and its preparation method and application. Background technique [0002] With the rapid consumption of traditional fossil, coal and other energy sources and the increasingly prominent environmental pollution problems, it is imminent to seek green and sustainable new energy sources. As an important energy form to replace fossil fuels, hydrogen energy is regarded as a promising alternative due to its advantages of zero emission, ultra-high energy density (143kJ kg-1), environmental friendliness, and sustainable utilization. energy carrier. Compared with the traditional hydrogen production method, hydrogen production by electrolysis of water is considered to be a hydrogen production method with broad application prospects due to its ...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/10C25B1/04C25B11/06
CPCB01J27/24C25B1/04B01J35/33B01J35/615Y02E60/36
Inventor 徐林李同飞殷静雯李玉刘千玉李苏霖孙冬梅唐亚文
Owner NANJING NORMAL UNIVERSITY
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