Array carbon nanotube/graphene supported platinum catalyst for fuel cell and preparation method
A carbon nanotube and fuel cell technology, applied in the field of electrochemistry, can solve the problems of shedding, reduced catalytic efficiency, large catalyst particle size, etc., and achieves the effects of strong electrical conductivity, increased mass transfer rate, and large specific surface area.
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Embodiment 1
[0030] (1) Take 3g of flake graphite, add concentrated sulfuric acid and concentrated phosphoric acid respectively, and pre-oxidize for 24h; slowly add an appropriate amount of potassium permanganate 18g under ice bath conditions, and control the temperature below 20°C; then heat and react at 50°C for 12h, and wait for The reactant was cooled to room temperature, poured into 400ml of ice-deionized water, added 10ml of 30% hydrogen peroxide, first centrifugally washed with 5% HCl, and then centrifugally washed with deionized water to obtain wet graphite oxide;
[0031] (2) Take 100ml of wet graphite oxide obtained in step 1, put it into 500ml of deionized water, and continue ultrasonication for 3 hours to fully dissolve it. After ultrasonication, add 10ml of hydrazine hydrate, reflux at 90°C for 6h, cool, filter and wash the obtained product, and freeze-dry it. The obtained product is graphene (RGO);
[0032] (3) get the Graphene 0.1g that obtains in step 2 and carry out sensit...
Embodiment 2
[0036](1) Take 3g of flake graphite, add 360ml and 40ml of concentrated sulfuric acid and concentrated phosphoric acid respectively, and pre-oxidize for 24 hours; slowly add an appropriate amount of potassium permanganate 18g under ice bath conditions, and control the temperature below 20°C; then heat the reaction at 50°C After 12 hours, the reactants were cooled to room temperature, poured into 400ml ice deionized water, added 10ml 30% hydrogen peroxide, first centrifugally washed with 5% HCl, and then centrifugally washed with deionized water to obtain wet graphite oxide;
[0037] (2) Take 100ml of wet graphite oxide obtained in step 1, put it into 500ml of deionized water, and continue ultrasonication for 3 hours to fully dissolve it. After ultrasonication, add 10ml of hydrazine hydrate, reflux at 90°C for 6h, cool, filter and wash the obtained product, and freeze-dry it. The obtained product is graphene (RGO);
[0038] (3) get the Graphene 0.1g that obtains in step 2 and c...
Embodiment 3
[0042] (1) Take 3g of flake graphite, add 360ml and 40ml of concentrated sulfuric acid and concentrated phosphoric acid respectively, and pre-oxidize for 24 hours; slowly add an appropriate amount of potassium permanganate 18g under ice bath conditions, and control the temperature below 20°C; then heat the reaction at 50°C After 12 hours, the reactants were cooled to room temperature, poured into 400ml ice deionized water, added 10ml 30% hydrogen peroxide, first centrifugally washed with 5% HCl, and then centrifugally washed with deionized water to obtain wet graphite oxide;
[0043] (2) Take 100ml of wet graphite oxide obtained in step 1, put it into 500ml of deionized water, and continue ultrasonication for 3 hours to fully dissolve it. After ultrasonication, add 10ml of hydrazine hydrate, reflux at 90°C for 6h, cool, filter and wash the obtained product, and freeze-dry it. The obtained product is graphene (RGO);
[0044] (3) get the Graphene 0.1g that obtains in step 2 and ...
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