ni 2 p@c/graphene airgel hydrogen evolution composite material and preparation method
A graphene aerogel and composite material technology, which is applied in the field of Ni2P nanoparticle-embedded graphene aerogel high-efficiency hydrogen evolution composite material and preparation, can solve the problems of pollution and electrochemical hydrogen evolution, which are rarely reported, and achieve good hydrophilicity. performance, improving the hydrogen evolution performance of electrolyzed water, and facilitating large-scale industrial production
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Embodiment 1
[0026] Preparation of Ni 2 P nanoparticles / carbon airgel (Ni 2 P / CA) efficient hydrogen evolution composite material
[0027] (1) Weigh a certain amount of Ni(NO 3 ) 2 ·6H 2 O was dissolved in deionized water and stirred to form 2.5 wt% Ni(NO 3 ) 2 ·6H 2 O solution A.
[0028] (2) A certain amount of sodium alginate (SA) was weighed and poured into deionized water and stirred for 12 hours to form a uniform sodium alginate solution B with a mass fraction of 1 wt%.
[0029](3) Inject 50ml of solution A into 50ml of solution B at normal temperature to form a hydrogel. The formed hydrogel was aged for 12 hours, then soaked in deionized water and ethanol for 3 times, each time for 2 hours, and washed 3 times.
[0030] (4) Freeze-dry the aged, soaked and washed hydrogel in a freeze dryer for 48 hours until a xerogel is formed.
[0031] (5) Take xerogel and red phosphorus (P) with a mass ratio of 1:1, red phosphorus is placed in the upstream of the tube furnace, and xerogel...
Embodiment 2
[0033] Preparation of Ni 2 P@C / graphene airgel (Ni 2 P@C / GA) efficient hydrogen evolution composite material
[0034] (1) Weigh a certain amount of Ni(NO 3 ) 2 ·6H 2 O was dissolved in deionized water and stirred to form 2.5 wt% Ni(NO 3 ) 2 ·6H 2 O solution A;
[0035] (2) Weigh a certain amount of sodium alginate (SA) and pour it into deionized water and stir for a long enough time to form a uniform sodium alginate solution B with a mass fraction of 1 wt%.
[0036] (3) Measure the GO solution of 2 mg / ml with a mass fraction of 5% and inject it into solution B, stir, and sonicate in an ultrasonic instrument to obtain dispersion C, m GO / (m GO +m SA ) is 5wt%;
[0037] (4) Inject solution A into solution C at normal temperature, the volume ratio of solution A and solution C is 1:1, forming a hydrogel. The formed hydrogel was aged for 12 hours, then soaked in deionized water and ethanol for 3 times, each time for 2 hours, and washed 3 times.
[0038] (5) Freeze-dry ...
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