Electrode catalytic material of double-layer nickel array structure, and preparation method and application thereof
An array structure, electrode catalysis technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of large-scale use of fossil fuels, inability to green and clean production, etc., to achieve improved catalytic activity and stability, low price, and stable catalytic performance Effect
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Embodiment 1
[0022] The preparation method of a single-layer nickel array (s-Ni@f-Ni) electrode material supported on a nickel foam substrate includes the following steps:
[0023] a. Pretreatment of nickel foam substrate
[0024] Select the cut 1×1cm 2 The nickel foam was soaked in absolute ethanol, ultrasonically treated for 15 minutes, and then replaced with 6mol / L hydrochloric acid for 15 minutes to remove the oil and oxide contamination layer on the surface; finally, the nickel foam substrate was rinsed with deionized water.
[0025] b. Electrodeposition of nickel arrays on nickel foam
[0026] Dissolve nickel chloride and pH regulator ammonium chloride in 50ml deionized water to obtain the required electrolyte for electrodeposition, wherein the concentration of nickel chloride is 0.1mol / L, and the concentration of ammonium chloride is 2mol / L. The treated foamed nickel substrate is immersed in the electrolyte, and the reaction is carried out by electrodeposition. The reaction time i...
Embodiment 2
[0029] The preparation of a double-layer nickel array (d-Ni@f-Ni) electrode material loaded on a nickel foam substrate includes the following steps:
[0030] Step a, with step a in embodiment 1;
[0031] Step b, with the b step in embodiment 1;
[0032] Step c, electrodepositing a second layer of nickel array on the foamed nickel material (s-Ni@f-Ni) on which a single layer of nickel array has been deposited.
[0033] Dissolve nickel sulfamate and pH regulator boric acid in 50ml of deionized water to obtain the required electrolyte for electrodeposition, wherein the concentration of nickel sulfamate is 1mol / L, and the concentration of boric acid is 0.05mol / L. Electrodeposition is used The reaction was carried out, the reaction time was 50min, the reaction temperature was 30°C, and the reaction current density was -0.05A / cm2. After the reaction, the product was washed and dried to obtain a double-layer nickel array (d-Ni@f-Ni) electrode material.
[0034] figure 2 SEM imag...
Embodiment 3
[0036] The preparation of a double-layer nickel array (d-Ni@f-Ni) electrode material loaded on a nickel foam substrate includes the following steps:
[0037] Step a, with step a in embodiment 1;
[0038] Step b, with the b step in embodiment 1;
[0039] Step c, step c, electrodepositing a second layer of nickel array on the foamed nickel material (s-Ni@f-Ni) on which a single layer of nickel array has been deposited.
[0040] Dissolve nickel sulfamate and pH regulator boric acid in 50ml of deionized water to obtain the electrolyte required for electrodeposition, wherein the concentration of nickel sulfamate is 1mol / L, and the concentration of boric acid is 0.05mol / L. Electrodeposition is used The reaction was carried out, the reaction time was 65min, the reaction temperature was 30°C, and the reaction current density was -0.05A / cm2. After the reaction, the product was washed and dried to obtain a double-layer nickel array (d-Ni@f-Ni) electrode material.
[0041] image 3 S...
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