Wood-based hydrogen evolution electrode and preparation method thereof
A technology based on hydrogen evolution and electrodes, applied in electrodes, electrolytic components, electrolysis processes, etc., can solve the problems of hindering electrolyte transfer, hydrogen gas diffusion too late, and reduced hydrogen evolution activity, so as 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 method for preparing a wood-based hydrogen evolution electrode, the preparation method comprising the following steps:
[0031] S1: Carbonize wood to obtain carbonized wood;
[0032] Specifically, in step S1, the wood carbonization method is: pre-carbonizing the 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 made of natural wood, such as basswood, pine, beech, etc.
[0033] The electrode of the present invention uses porous carbonized wood as the substrate, and after two high-temperature calcinations, compared with other traditional substrates, it has high mechanical strength and good electrical conductivity, and its multi-scale ordered pore structure is conducive to the infiltration and infiltration of the electrolyte. The rapid transmission of gas can accelerate the catalytic reaction kinetics and improve the catalytic activity. In addition, the source of w...
Embodiment 1
[0051] The preparation method of the wood-based hydrogen evolution electrode comprises the following steps:
[0052] S1: Cut basswood blocks into 3cm long and 2cm wide sheets, then ultrasonically clean them with deionized water and absolute ethanol for 10 minutes, then put them in a vacuum oven at 60°C for 8 hours, and place them in a muffle Pre-carbonize in the furnace at 200°C for 6h, then transfer it to a quartz tube furnace for carbonization at 900°C for 7h;
[0053] S2: Dissolve nickel chloride and thiourea in 60 mL of ethylene glycol at a molar ratio of 1:2, and stir until dissolved to obtain a precursor solution;
[0054] S3: Transfer the precursor solution into a 100mL reaction kettle with carrier carbonized wood, perform solvothermal reaction at 100°C for 16 hours, collect the product by natural cooling, wash the product with deionized water and absolute ethanol, and dry it in vacuum;
[0055] S4: dissolving palladium chloride, sodium chloride and sodium citrate in 1...
Embodiment 2
[0058] The preparation method of the wood-based hydrogen evolution electrode comprises the following steps:
[0059] S1: Cut basswood blocks into 3cm long and 2cm wide sheets, then ultrasonically clean them with deionized water and absolute ethanol for 10 minutes, then put them in a vacuum oven at 60°C for 8 hours, and place them in a muffle Pre-carbonize in the furnace at 300°C for 5h, then transfer it to a quartz tube furnace for carbonization at 1200°C for 5h;
[0060] S2: Dissolve nickel sulfate and thiourea in 60 mL of ethylene glycol at a molar ratio of 1:5, and stir until dissolved to obtain a precursor solution;
[0061] S3: Transfer the precursor solution into a 100mL reaction kettle with carrier carbonized wood, perform solvothermal reaction at 200°C for 8h, collect the product by natural cooling, wash the product with deionized water and absolute ethanol, and dry it in vacuum ;
[0062] S4: dissolving palladium chloride, sodium chloride and sodium citrate in 100 m...
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