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CoP/graphene aerogel composite material for high-efficiency hydrogen evolution and preparation method thereof

A technology of graphene airgel and composite materials, which is applied in the research field of CoP/graphene airgel high-efficiency hydrogen evolution composite materials and its preparation, and hydrogen evolution performance. It can solve problems such as pollution and electrochemical hydrogen evolution that are rarely reported, and achieve The effect of improving stability, improving the hydrogen evolution performance of electrolyzed water, and having a good application prospect

Active Publication Date: 2018-04-13
江苏江科石墨烯研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sodium alginate solution is chelated with metal cations to form aerogels, which have been widely reported in the treatment of environmental pollution and the degradation of organic matter, but there are few reports on electrochemical hydrogen evolution

Method used

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  • CoP/graphene aerogel composite material for high-efficiency hydrogen evolution and preparation method thereof
  • CoP/graphene aerogel composite material for high-efficiency hydrogen evolution and preparation method thereof
  • CoP/graphene aerogel composite material for high-efficiency hydrogen evolution and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of CoP / aerogel (CoP / As) efficient hydrogen evolution composite material

[0027] (1) Weigh Co(NO 3 ) 2 .6H 2 O is dissolved in deionized water and stirred to form 2.5wt% Co(NO 3 ) 2 .6H 2 O solution A.

[0028] (2) Weigh sodium alginate (SA), pour it into deionized water and stir for 12 hours to form a uniform sodium alginate solution B with a mass fraction of 1 wt%.

[0029] (3) Inject 50 ml of solution B into 50 ml of solution A at room temperature to form a hydrogel. The formed hydrogel is aged for 12 hours, and then soaked in deionized water and ethanol for 2 hours each time, and washed 3 times.

[0030] (4) The hydrogel after aging, soaking and washing is freeze-dried in a freeze dryer for 48 hours to form a dry gel.

[0031] (5) Take dry gel and red phosphorus (P) separately, place the red phosphorus at the upstream position of the tube furnace, and place the dry gel at the downstream, perform high-temperature phosphating at a phosphating temperature of 800°C, ...

Embodiment 2

[0033] Preparation of CoP / graphene aerogel high-efficiency hydrogen evolution composite material

[0034] (1) Weigh Co(NO 3 ) 2 .6H 2 O is dissolved in deionized water and stirred to form 2.5wt% Co(NO 3 ) 2 .6H 2 O solution A.

[0035] (2) Weigh sodium alginate (SA), pour it into deionized water and stir for 12 hours to form a uniform sodium alginate solution B with a mass fraction of 1 wt%.

[0036] (3) Measure the GO (2mg / ml) solutions with mass fractions of 5%, 10% and 20% respectively and inject them into solution B, stir, and sonicate in an ultrasonic instrument to obtain dispersion C;

[0037] (4) Inject 50 ml of Dispersion C into 50 ml of Solution A at room temperature to form a hydrogel. The formed hydrogel is aged for 12 hours, and then soaked in deionized water and ethanol 3 times, 2 hours each time, and washed 3 times.

[0038] (5) The hydrogel after aging, soaking and washing is freeze-dried in a freeze dryer for 48 hours until a dry gel is formed.

[0039] (6) Take the dry ...

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Abstract

The invention specifically relates to a CoP / graphene aerogel composite material for high-efficiency hydrogen evolution and a preparation method thereof, and research on the hydrogen evolution performance of the CoP / graphene aerogel composite material. According to the method, hydrogel is prepared by using a simple sol-gel process, and then the CoP / graphene aerogel composite material for high-efficiency hydrogen evolution is prepared by using high-temperature phosphatization process. The CoP / graphene aerogel composite material prepared in the invention has excellent electrocatalytic hydrogen evolution performance.

Description

Technical field [0001] The invention belongs to a catalyst for the electrolysis of water, and particularly refers to the study of a CoP / graphene aerogel high-efficiency hydrogen evolution composite material, a preparation method and its hydrogen evolution performance. Background technique [0002] In recent years, more and more researchers have paid attention to the energy crisis. The current development and utilization of clean and effective energy is one of the important challenges in solving the current crisis. From the perspective of clean and recyclable energy, hydrogen energy, as an efficient, clean, and environmentally friendly secondary energy source, has the characteristics of rich resources, high calorific value, environmentally friendly and non-polluting, and diverse utilization forms. It has been generally regarded as an ideal The new energy that can replace fossil fuels has unparalleled huge advantages and infinitely broad application prospects. However, how to obta...

Claims

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Application Information

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IPC IPC(8): B01J27/185C25B11/06C25B1/04
CPCC25B1/04C25B11/04B01J27/1853B01J37/036B01J37/28B01J35/23B01J35/33Y02E60/36
Inventor 谢吉民赵文通魏巍N.纳比杨赛赛张凤卿孙伟胡慧慧
Owner 江苏江科石墨烯研究院有限公司
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