High-efficiency full-electrolysis water electrocatalyst MoO2-CeOx/NF and preparation method thereof
A catalyst, hydropower technology, applied in the direction of electrodes, electrolysis components, electrolysis process, etc., can solve the problems of restricting the development of electrocatalysis, high price, and hysteresis of catalyst performance.
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Embodiment 1
[0039] The total electrocatalyst MoO of water splitting described in this embodiment 2 -CeO x The preparation method of / NF comprises the steps:
[0040] (1) Cut the commercial nickel foam into a size of 10mm*20mm, ultrasonically treat it in 3M dilute hydrochloric acid, absolute ethanol, and deionized water for 25 minutes, and then vacuum-dry it at 60°C for 8 hours. See figure 1 shown;
[0041] (2) In addition, take 1 mmol of ammonium molybdate tetrahydrate, 0.4 mmol of cerium nitrate hexahydrate and 4 mmol of acetamide, add 60 ml of deionized water and stir for 30 min to obtain a loading solution;
[0042] (3) Transfer the obtained load solution to the reactor, and add the nickel foam treated in step (1), seal it and put it in an oven at 200°C for 14 hours; when the reactor is cooled to room temperature, take out the nickel foam , rinsed with deionized water for 3 times, and dried in an oven at 45°C for 8 hours. The SEM morphology of the obtained precursor is shown in f...
Embodiment 2
[0057] The total electrocatalyst MoO of water splitting described in this embodiment 2 -CeO x The preparation method of -0.2 / NF comprises the following steps:
[0058] (1) Cut commercial nickel foam into a size of 10mm*20mm, ultrasonically treat each in 3M dilute hydrochloric acid, absolute ethanol, and deionized water for 25 minutes, and then vacuum-dry at 60°C for 8 hours for later use;
[0059] (2) In addition, take 1 mmol of ammonium molybdate tetrahydrate, 0.2 mmol of cerium nitrate hexahydrate and 4 mmol of acetamide, add 60 ml of deionized water and stir for 30 min to obtain a loading solution;
[0060] (3) Transfer the obtained load solution to the reaction kettle, and add the previously treated foamed nickel, seal it and put it in an oven at 200°C for 14 hours; when the reaction kettle is cooled to room temperature, take out the foamed nickel and wash Rinse 3 times, put it into a 45°C oven and dry for 8 hours to obtain the precursor;
[0061] (4) Put the dried nick...
Embodiment 3
[0064] The total electrocatalyst MoO of water splitting described in this embodiment 2 -CeO x The preparation method of -0.6 / NF comprises the following steps:
[0065] (1) Cut commercial nickel foam into a size of 10mm*20mm, ultrasonically treat each in 3M dilute hydrochloric acid, absolute ethanol, and deionized water for 25 minutes, and then vacuum-dry at 60°C for 8 hours for later use;
[0066](2) In addition, take 1 mmol of ammonium molybdate tetrahydrate, 0.6 mmol of cerium nitrate hexahydrate and 4 mmol of acetamide, add 60 ml of deionized water and stir for 30 min to obtain a loading solution;
[0067] (3) Transfer the obtained load solution to the reaction kettle, and add the previously treated foamed nickel, seal it and put it in an oven at 200°C for 14 hours; when the reaction kettle is cooled to room temperature, take out the foamed nickel and wash Rinse 3 times, put it into a 45°C oven and dry for 8 hours to obtain the precursor;
[0068] (4) Put the dried nicke...
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