CoS2/CoS2-NC catalytic electrode material with three-dimensional core-shell structure as well as preparation method and application of catalytic electrode material
A core-shell structure, catalytic electrode technology, applied in chemical instruments and methods, physical/chemical process catalysts, electrodes, etc., can solve problems such as limited activity, achieve abundant production raw materials, accelerate the rate of electron transfer, and produce low-cost Effect
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[0036] Example 1
[0037] (1) Preparation of three-dimensional graphene electrode (EG):
[0038] (1-1) Cut the graphite sheet into 2×3cm 2 size, use a mixed solution of ultrapure water and ethanol to wash in an ultrasonic cleaning apparatus for about 1 hour, and dry in an oven at 80 °C;
[0039] (1-2) The graphite sheet treated in step (1) was placed in 0.05M (NH) as an anode 4 ) 2 SO 4 In the solution, the counter electrode is a platinum electrode;
[0040] (1-3) Under the voltage of 10V, electrochemical stripping is performed for about 2min;
[0041] (1-4) Remove the graphite sheet, wash it with deionized water, and dry it in an oven to obtain an EG substrate.
[0042] (2) Electrochemical deposition of Co(OH) 2 :
[0043] (2-1) Using a three-electrode system, the working electrode is EG, and the counter electrode is 2×2cm 2 The platinum electrode, the reference electrode is Ag / AgCl electrode in saturated KCl solution, and the electrolyte is 0.05M Co(NO 3 ) 2 elect...
Example Embodiment
[0060] Example 2
[0061] (1) Preparation of three-dimensional graphene electrode (EG):
[0062] (1-1) Cut the graphite sheet into 3×3cm 2 size, use a mixed solution of ultrapure water and ethanol to wash in an ultrasonic cleaning apparatus for about 1 hour, and dry in an oven at 80 °C;
[0063] (1-2) The graphite sheet treated in step (1) was placed in 0.05M (NH) as an anode 4 ) 2 SO 4 In the solution, the counter electrode is a platinum electrode;
[0064] (1-3) Under the voltage of 10V, the electrochemical stripping is performed for about 3 minutes;
[0065] (1-4) Remove the graphite sheet, wash it with deionized water, and dry it in an oven to obtain an EG substrate.
[0066] (2) Electrochemical deposition of Co(OH) 2 :
[0067] (2-1) Using a three-electrode system, the working electrode is EG, and the counter electrode is 2×2cm 2 The platinum electrode, the reference electrode is Ag / AgCl electrode in saturated KCl solution, and the electrolyte is 0.05M Co(NO 3 )...
Example Embodiment
[0081] Example 3
[0082] (1) Preparation of three-dimensional graphene electrode (EG):
[0083] (1-1) Cut the graphite sheet into 3×3cm 2 size, use a mixed solution of ultrapure water and ethanol to wash in an ultrasonic cleaning apparatus for about 1 hour, and dry in an oven at 80 °C;
[0084] (1-2) The graphite sheet treated in step (1) was placed in 0.05M (NH) as an anode 4 ) 2 SO 4 In the solution, the counter electrode is a platinum electrode;
[0085] (1-3) Under the voltage of 10V, electrochemical stripping is performed for about 2min;
[0086] (1-4) Remove the graphite sheet, wash it with deionized water, and dry it in an oven to obtain an EG substrate.
[0087] (2) Electrochemical deposition of Co(OH) 2 :
[0088] (2-1) Using a three-electrode system, the working electrode is EG, and the counter electrode is 2×2cm 2 The platinum electrode, the reference electrode is Ag / AgCl electrode in saturated KCl solution, and the electrolyte is 0.05M Co(NO 3 ) 2 elect...
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