Phosphorus element self-doped tobacco stem-based activated carbon electrode material as well as preparation method and application thereof
A technology based on activated carbon and electrode materials, applied in the field of self-doped phosphorus-based tobacco rod-based activated carbon electrode materials and its preparation, can solve the problems of low phosphorus content, affecting the performance of supercapacitors, and inability to obtain it, so as to reduce the harm , enhance the added economic value, and improve the effect of specific capacitance
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Embodiment 1
[0034] (1) Plant flue-cured tobacco;
[0035] (2) Take tobacco stalks, grind the tobacco stalks into 200 meshes to obtain tobacco stalk powder, then put the tobacco stalk powder in an oven and keep it warm for 24 hours at 70°C for drying;
[0036] (3) Put the dried tobacco stalk powder into the tube furnace under nitrogen atmosphere (flow rate is 3mL·min -1 ), at 5°C·min -1 The speed was increased to 550°C for 2 hours, and pyrolysis treatment was carried out; after heat treatment, the furnace was lowered to room temperature and then taken out to obtain the precursor of tobacco stalk carbon powder;
[0037] (4) Mix the tobacco stalk carbon powder precursor with KOH, add water for further grinding and kneading, and then put it in a vacuum drying oven at 70°C for 12 hours to obtain a tobacco stalk carbon powder / KOH mixture;
[0038] (5) Then put the tobacco stalk carbon powder / KOH mixture into the tube furnace under nitrogen atmosphere (flow rate is 3mL·min -1 ), at 5°C·min -...
Embodiment 2
[0043] (1) Plant flue-cured tobacco;
[0044] (2) Take tobacco stalks, crush the tobacco stalks into 100 meshes to obtain tobacco stalk powder, then put the tobacco stalk powder in an oven and keep it warm for 24 hours at 70°C for drying;
[0045] (3) Put the dried tobacco stalk powder into the tube furnace under nitrogen atmosphere (flow rate is 3mL·min -1 ), at 6°C·min -1 The speed was raised to 600°C for 1 hour, and pyrolysis treatment was carried out; after the heat treatment, the furnace was lowered to room temperature and then taken out to obtain the tobacco stalk carbon powder precursor;
[0046] (4) Mix the tobacco stalk carbon powder precursor with KOH, add water for further grinding and kneading, and then put it in a vacuum drying oven at 70°C for 12 hours to obtain a tobacco stalk carbon powder / KOH mixture;
[0047] (5) Then put the tobacco stalk carbon powder / KOH mixture into the tube furnace under nitrogen atmosphere (flow rate is 3mL·min -1 ), at 6°C·min -1Th...
Embodiment 3
[0052] (1) Plant flue-cured tobacco;
[0053] (2) Take tobacco stalks, grind the tobacco stalks into 300 meshes to obtain tobacco stalk powder, then put the tobacco stalk powder in an oven and keep it warm for 24 hours at 70°C for drying;
[0054] (3) Put the dried tobacco stalk powder into the tube furnace under nitrogen atmosphere (flow rate is 3mL·min -1 ), at 3°C·min -1 The speed was raised to 500°C for 3 hours, and pyrolysis treatment was carried out; after the heat treatment, the furnace was lowered to room temperature and then taken out to obtain the tobacco stalk carbon powder precursor;
[0055] (4) Mix the tobacco stalk carbon powder precursor with KOH, add water for further grinding and kneading, and then put it in a vacuum drying oven at 70°C for 12 hours to obtain a tobacco stalk carbon powder / KOH mixture;
[0056] (5) Then put the tobacco stalk carbon powder / KOH mixture into the tube furnace under nitrogen atmosphere (flow rate is 3mL·min -1 ), at 3°C·min -1 ...
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