Carbon tube supported ultra-small VN hydrogen production electrocatalyst, synthesis method and application
A technology of electrocatalyst and synthesis method, applied in the direction of chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalyst, etc., can solve the problems of complex preparation process and high manufacturing cost, and achieve good electrochemical performance, improved efficiency, The unique effect of the structure
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Embodiment 1
[0026] The synthesis method of the carbon tube-loaded cobalt-doped ultra-small VN hydrogen-producing electrocatalyst of this embodiment comprises the following steps:
[0027] S1. Put 1500mg of dicyandiamide, 100mg of cobalt chloride hexahydrate and 0.025g of ammonium metavanadate in a mortar and grind for 20 minutes to mix the raw materials evenly. Put the obtained mixture into a porcelain boat and place the porcelain boat on In a tube-type atmosphere furnace, two furnace plugs are placed at each end of the quartz tube.
[0028] S2. Introduce the inert gas argon into the tube, and then carry out pumping and gas replenishment three times each. The heating rate was raised to 500°C at a rate of 10°C / min, and kept for 2 hours, and then raised to 900°C at a rate of 5°C / min, and kept for 2 hours.
[0029] S3. When the sample is cooled to room temperature, take out the sample and grind it for 20min, then use 1mol / L H 2 SO 4 Pickling for 12h. After acid washing, the sample was wa...
Embodiment 2
[0031] The synthesis method of the carbon tube-loaded cobalt-doped ultra-small VN hydrogen-producing electrocatalyst of this embodiment comprises the following steps:
[0032] S1. Put 1500mg of melamine, 0.75mg of cobalt chloride hexahydrate and 0.025g of ammonium metavanadate in a mortar and grind for 20 minutes to mix the raw materials evenly. In a type atmosphere furnace, two furnace plugs are placed at each end of the quartz tube.
[0033] S2. Introduce the inert gas argon into the tube, and then carry out pumping and gas replenishment three times each. The heating rate was raised to 500°C at a rate of 10°C / min, and kept for 2 hours, and then raised to 800°C at a rate of 5°C / min, and kept for 2 hours.
[0034] S3. When the sample is cooled to room temperature, the sample is taken out and ground for 20 minutes, and then acid-washed with 1 mol / L H2SO4 for 12 hours. After acid washing, the sample was washed and centrifuged three times alternately with ultrapure water and ab...
Embodiment 3
[0036] The synthesis method of the carbon tube-loaded cobalt-doped ultra-small VN hydrogen-producing electrocatalyst of this embodiment comprises the following steps:
[0037] S1. Put 1500mg of dicyandiamide, 100mg of cobalt chloride hexahydrate and 0.05g of ammonium metavanadate in a mortar and grind for 20 minutes to mix the raw materials evenly. Put the obtained mixture into a porcelain boat and place the porcelain boat on In a tube-type atmosphere furnace, two furnace plugs are placed at each end of the quartz tube.
[0038] S2. Introduce the inert gas argon into the tube, and then carry out pumping and gas replenishment three times each. The heating rate was raised to 500°C at a rate of 10°C / min, and kept for 2 hours, and then raised to 900°C at a rate of 5°C / min, and kept for 2 hours.
[0039] S3. When the sample is cooled to room temperature, take out the sample and grind it for 20min, then use 1mol / L H 2 SO 4 Pickling for 12h. After acid washing, the sample was was...
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