a co 2 Preparation of Electrode for Electrochemical Reduction, Electrode and Application
An electrochemical and electrode technology, applied in the field of metal oxide electrodes and its preparation, can solve the problems of increasing the complexity of the electrode preparation process, poor reproducibility, cumbersome preparation and storage procedures, etc., and achieve strong controllability and operability , The preparation method is simple, the surface oxide layer is thin and dense
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Embodiment 1
[0039] 1. Zinc foil pretreatment: with a purity of 99.9%, a thickness of 100 microns, and an area of 10 cm 2 Zinc foil is used as the base material. First, it is soaked in dilute hydrochloric acid with a mass fraction of 2% at room temperature for 10 minutes to remove impurities such as surface scale, and then rinsed with a large amount of deionized water to neutrality. air dry;
[0040] 2. The zinc electrode with a dense oxide layer on the surface is prepared with Zn(NO 3 ) 2 ·6H 2 O and octadecyltrimethylammonium bromide are raw materials, prepare hydrothermal reaction precursor solution 60ml, wherein Zn(NO 3 ) 2 The concentration is 0.2mM, and the concentration of octadecyltrimethylammonium bromide is 0.5mM. After completely dissolving, it is transferred into a 100ml reactor liner (the material is PTFE, and the thickness is 5mm). After sealing, it is sent into 160 ℃ oven for hydrothermal reaction, take it out after 6h, and cool down to room temperature. Take out the...
Embodiment 2
[0045] 1. Pretreatment of pure indium foil: with a purity of 99.9%, a thickness of 100 microns, and an area of 5 cm 2 The indium foil is used as the base material, first at room temperature, soaked in phosphoric acid with a mass fraction of 50% as the working electrode, the Pt sheet as the counter electrode, and the saturated calomel electrode as the reference electrode. Using a potentiostat, control the electrolysis voltage to 0.16V for 30 minutes to remove impurities such as surface scale, then rinse with a large amount of deionized water until neutral, and blow dry with high-purity argon;
[0046] 2. The indium electrode with a dense oxide layer on the surface is prepared with InCl 3 And triton (Triton-100) is raw material, preparation hydrothermal reaction precursor solution 60ml, wherein InCl 3 The concentration of triton is 0.1mM, and the concentration of triton is 0.2mM. Stir until it is completely dissolved and transfer it to a 100ml reactor lining (the material is ...
Embodiment 3
[0051]1. Pretreatment of pure copper sheets: with a purity >99.9%, a thickness of 100 microns, and an area of 9 cm 2 The copper sheet was used as the base material, and it was soaked in 85% phosphoric acid at room temperature as the working electrode, the Pt sheet was used as the counter electrode, and the saturated calomel electrode was used as the reference electrode. Use a potentiostat, control the electrolysis voltage to 2V and treat for 5 minutes to remove impurities such as surface scale, then rinse with a large amount of deionized water until neutral, and dry with high-purity argon;
[0052] 2. Copper electrode with a dense oxide layer on the surface is prepared with CuSO 4 ·5H 2 O and tetradecyltrimethylammonium bromide are raw materials, prepare 60ml of hydrothermal reaction precursor solution, wherein CuSO 4 The concentration of tetradecyltrimethylammonium bromide is 3mM, the concentration of tetradecyltrimethylammonium bromide is 0.2mM, heated to 45°C, stirred u...
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