Carbon/nickel-cobalt layered double hydroxide composite material and preparation method and application thereof
A technology of composite materials and hydroxides, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve problems such as no research, and achieve the effect of improving capacitance output capability, enhancing stability, and good supercapacitor performance
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Embodiment 1
[0026] (1) Preparation of carbonized wood toner
[0027] Poplar wood powder (manufacturer: Longyou Mubang Chemical Co., Ltd., size: 100 mesh, ash content ≤ 5%, moisture content ≤ 5%) 80g is placed in the program temperature-controlled tube furnace, and the temperature is increased by 2 under nitrogen protection. The speed of ℃ / min is raised from room temperature to 800 ℃, and kept at this temperature for 1.5 hours to remove volatile organic compounds and carbonize solid residues at the same time. Promptly obtain brown black carbonized charcoal powder 25g after temperature is down to room temperature.
[0028] (2) Preparation of Activated Charcoal Powder
[0029] Mix 10g of the carbonized product prepared in step (1) with 40g of potassium hydroxide and 50mL of water (mass ratio 1:4:5), stir evenly and heat in an oven at 100°C until the water content in the mixture is 22% of the initial amount of water added. % (that is, the resulting mixture was heated in an oven to evaporate...
Embodiment 2
[0039] (1) Preparation of carbonized wood toner
[0040] Poplar wood powder (manufacturer: Longyou Mubang Chemical Co., Ltd., size: 100 mesh, ash content ≤ 5%, moisture content ≤ 5%) 80g is placed in the program temperature-controlled tube furnace, and the temperature is increased by 3 under nitrogen protection. The speed of ℃ / min is raised from room temperature to 900 ℃, and kept at this temperature for 1 hour to remove volatile organic compounds and carbonize solid residues at the same time. When the temperature was down to room temperature, 22 g of brown-black carbonized charcoal powder was obtained.
[0041] (2) Preparation of Activated Charcoal Powder
[0042] Mix 10 g of the carbonized product prepared in step (1) with 45 g of sodium hydroxide and 50 mL of water (mass ratio 1:4.5:5), stir evenly, and heat in an oven at 90°C until the water content in the mixture is 25% of the initially added water. % (that is, the resulting mixture was heated in an oven to evaporate 37...
Embodiment 3
[0049] (1) Preparation of carbonized wood toner
[0050] Poplar wood powder (manufacturer: Longyou Mubang Chemical Co., Ltd., size: 100 mesh, ash content ≤ 5%, moisture content ≤ 5%) 80g is placed in a program temperature-controlled tube furnace, and the temperature is set at 1 The speed of °C / min is raised from room temperature to 700 °C, and kept at this temperature for 2 hours to remove volatile organic compounds and carbonize solid residues. Promptly obtain brown black carbonized charcoal powder 25g after temperature is down to room temperature.
[0051] (2) Preparation of Activated Charcoal Powder
[0052] Mix 10g of the carbonized product prepared in step (1) with 45g of potassium hydroxide and 60mL of water (mass ratio 1:4.5:6), stir evenly and heat in an oven at 100°C until the water content in the mixture is 20% of the initially added water. % (that is, the resulting mixture was heated in an oven to evaporate 48 g of water) to obtain a black gelatinous slurry. Then...
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