Wood-based hydrogen evolution electrode and preparation method thereof
A technology based on hydrogen evolution and electrodes, applied in electrodes, electrolysis components, electrolysis processes, etc., can solve the problems of hindering electrolyte transfer, hydrogen gas diffusion, and hydrogen evolution activity reduction, etc., to achieve accelerated catalytic reaction kinetics, excellent hydrogen evolution catalytic activity, mechanical high intensity effect
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[0030] One aspect of the present invention provides a preparation method of a wood-based hydrogen evolution electrode, the preparation method comprising the following steps:
[0031] S1: carbonized wood to obtain carbonized wood;
[0032] Specifically, in step S1, the wood carbonization method is: pre-carbonizing dry natural wood at 200-300°C for 5-6 hours, and then carbonizing at 900-1200°C for 5-7 hours. The wood is natural wood, such as basswood, pine, beech, etc.
[0033] Compared with other traditional substrates, the electrode of the invention has high mechanical strength and good electrical conductivity, and at the same time, its multi-scale ordered pore structure is conducive to the infiltration of electrolyte and The rapid transmission of gas can accelerate the kinetics of the catalytic reaction and improve the catalytic activity. In addition, wood sources are abundant, and carbonized wood is used as catalyst carrier, which is beneficial to reduce the cost of cataly...
Embodiment 1
[0051] The preparation method of the wood-based hydrogen evolution electrode comprises the following steps:
[0052] S1: Cut the basswood block into sheets with a length of 3cm and a width of 2cm, then ultrasonically clean it with deionized water and absolute ethanol for 10min in turn, and then put it into a 60°C vacuum drying box to dry for 8h, then put it in a muffle It was pre-carbonized at 200℃ for 6h in the furnace, and then transferred to a quartz tube furnace for carbonization at 900℃ for 7h;
[0053] S2: Dissolve nickel chloride and thiourea in 60 mL of ethylene glycol in a molar ratio of 1:2, and stir until dissolved to obtain a precursor solution;
[0054] S3: Transfer the precursor solution into a 100 mL reaction kettle with carbonized wood as a carrier, carry out a solvothermal reaction at 100° C. for 16 h, naturally cool to collect the product, use deionized water and anhydrous ethanol to clean the product and vacuum dry it;
[0055] S4: dissolving palladium chlo...
Embodiment 2
[0058] The preparation method of the wood-based hydrogen evolution electrode comprises the following steps:
[0059] S1: Cut the basswood block into sheets with a length of 3cm and a width of 2cm, then ultrasonically clean it with deionized water and absolute ethanol for 10min in turn, and then put it into a 60°C vacuum drying box to dry for 8h, then put it in a muffle It was pre-carbonized at 300℃ for 5h in the furnace, and then transferred to a quartz tube furnace for carbonization at 1200℃ for 5h;
[0060] S2: Dissolve nickel sulfate and thiourea in 60 mL of ethylene glycol in a molar ratio of 1:5, and stir until dissolved to obtain a precursor solution;
[0061] S3: Transfer the precursor solution into a 100 mL reaction kettle with carbonized wood as a carrier, carry out a solvothermal reaction at 200 °C for 8 h, naturally cool to collect the product, use deionized water and anhydrous ethanol to clean the product and vacuum dry it ;
[0062] S4: dissolving palladium chlo...
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