A kind of preparation method of large-scale biomass graphene and its application in energy storage device
A biomass graphene, large-scale technology, applied in graphene, chemical instruments and methods, carbon compounds, etc., can solve the problems of many graphene defects, poor quality, and high production costs, and achieve cheap and easy-to-use raw materials. Simple and feasible, low equipment requirements
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Embodiment 1
[0019] (1) After the light cork chips are cleaned, they are mechanically crushed into granules with a particle diameter of 40 mesh;
[0020] (2) Soak 50 g of pulverized raw material particles in a chemical stripping solution A prepared by adding 50 mL of concentrated nitric acid and 50 mL of concentrated sulfuric acid for 1 hour, then ultrasonicate at room temperature for 24 hours, filter out the solid matter, and rinse the filtrate with water;
[0021] (3) Put the cleaned filtrate into a tube furnace for carbonization, and control the heating rate of the tube furnace at 10°C / min, raise the temperature to 600°C, and keep it for 4 hours to obtain the carbonized product;
[0022] (4) Soak 30g of the carbonized product in an organic solvent B prepared by adding 50mL of DMSO and 10mL of isopropanol for 0.5h, then ultrasonicate at room temperature for 6h, put the sonicated solid-liquid mixture into an oven, and heat it at 80°C Keeping it warm for 4 hours, controlling the solid cont...
Embodiment 2
[0024] (1) Mechanically pulverizing the sorghum stalk core into particles with a particle diameter of 20 mesh after cleaning;
[0025] (2) Soak 50 g of pulverized raw material particles in a chemical stripping solution A prepared by adding 20 mL of concentrated hydrochloric acid and 80 mL of concentrated nitric acid for 1 hour, then ultrasonicate at room temperature for 8 hours, filter out the solid matter, and rinse the filtrate with water;
[0026] (3) put the cleaned filtrate into a tube furnace for carbonization, and control the heating rate of the tube furnace at 5°C / min, raise the temperature to 450°C, and keep it for 6 hours to obtain a carbonized product;
[0027] (4) Soak 30g of the carbonized product in an organic solvent B prepared by adding 40mL of DMF and 20mL of n-propanol for 0.5h, then ultrasonicate at room temperature for 8h, put the sonicated solid-liquid mixture into an oven, and heat it at 60°C Keeping it warm for 6 hours, controlling the solid content in t...
Embodiment 3
[0029] (1) After the corn stalk core is cleaned, it is mechanically crushed into granules with a particle diameter of 30 meshes;
[0030] (2) Soak 50 g of pulverized raw material particles in a chemical stripping solution A prepared by adding 50 mL of concentrated hydrochloric acid and 50 mL of concentrated sulfuric acid for 1 hour, then ultrasonicate at room temperature for 20 hours, filter out the solid matter, and rinse the filtrate with water;
[0031] (3) Put the cleaned filtrate into a tube furnace for carbonization, control the heating rate of the tube furnace at 10°C / min, raise the temperature to 650°C, and keep it for 8 hours to obtain the carbonized product;
[0032] (4) Soak 30g of the carbonized product in an organic solvent B prepared by adding 30mL of BNBZ and 30mL of NMP for 0.5h, and then ultrasonicate for 10h at room temperature. Keeping the temperature for 6 hours, controlling the solid content in the range of 85%, and preparing biomass graphene with a sheet ...
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