Preparation method of a carbon cloth in-situ growth sandwich core-shell electrode material
An in-situ growth, sandwich-type technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of electrodes not having flexibility, complicated preparation process, and restrictions on wide application, so as to improve electrochemical performance, enhance electrical conductivity, and improve structural stability Effect
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Embodiment 1
[0013] Example 1: (1) Dissolve cobalt nitrate, urea, and ammonium fluoride in deionized water, transfer to a 50mL autoclave after fully dissolving and mixing, put carbon cloth (CC) into the autoclave, and react at 120 °C for 5 h, ultrasonically cleaned, dried, and annealed at 350 °C for 2 h in air to obtain Co grown on carbon cloth in situ 3 o 4 Nanowires; (2) Dissolve 50 mg dopamine and 10 mmol / L Tris-buffer in 50 mL deionized water, and adjust the pH to about 8~9 to prepare CC / Co 3 o 4 Immerse in the solution, react at room temperature for 12 h, fully wash with deionized water, and anneal at 800 °C for 2 h under nitrogen atmosphere after drying to realize the thin layer of carbon on Co 3 o 4 Carbonization modification of nanowires; (3) 0.2 mol of cobalt chloride, 0.3 mol of nickel chloride, and 0.03 mol of thiourea were dissolved in 40 mL of distilled water to prepare an electrolyte, and the carbon-modified Co 3 o 4 Electrodeposition of CoNi on Nanowires 2 S 4 nanoshe...
Embodiment 2
[0014] Example 2: (1) Dissolve cobalt nitrate, urea, and ammonium fluoride in deionized water, transfer to a 50mL autoclave after fully dissolving and mixing, put carbon cloth (CC) into the autoclave, and react at 120 °C for 5 h, ultrasonically cleaned, dried, and annealed at 350 °C for 2 h in air to obtain Co grown on carbon cloth in situ 3 o 4 Nanowires; (2) Dissolve 70 mg dopamine and 10 mmol / L Tris-buffer in 50 mL deionized water, and adjust the pH to about 8~9 to prepare CC / Co 3 o 4 Immerse in the solution, react at room temperature for 12 h, fully wash with deionized water, and anneal at 800 °C for 2 h under nitrogen atmosphere after drying to realize the thin layer of carbon on Co 3 o 4 Carbonization modification of nanowires; (3) 0.2 mol of cobalt chloride, 0.3 mol of nickel chloride, and 0.03 mol of thiourea were dissolved in 40 mL of distilled water to prepare an electrolyte, and the carbon-modified Co 3 o 4 Electrodeposition of CoNi on Nanowires 2 S 4 nanoshe...
Embodiment 3
[0015] Example 3: (1) Dissolve cobalt nitrate, urea, and ammonium fluoride in deionized water, transfer to a 50mL autoclave after fully dissolving and mixing, put carbon cloth (CC) into the autoclave, and react at 120 °C for 5 h, ultrasonically cleaned, dried, and annealed at 350 °C for 2 h in air to obtain Co grown on carbon cloth in situ 3 o 4 Nanowires; (2) Dissolve 110 mg dopamine and 10 mmol / L Tris-buffer in 50 mL deionized water and adjust the pH to about 8~9 to prepare CC / Co 3 o4 Immerse in the solution, react at room temperature for 12 h, fully wash with deionized water, and anneal at 800 °C for 2 h under nitrogen atmosphere after drying to realize the thin layer of carbon on Co 3 o 4 Carbonization modification of nanowires; (3) 0.3 mol of cobalt chloride, 0.45 mol of nickel chloride, and 0.045 mol of thiourea were dissolved in 40 mL of distilled water to prepare an electrolyte solution, and the carbon-modified Co 3 o 4 Electrodeposition of CoNi on Nanowires 2 S ...
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