Preparation method of silk wool peat-based supercapacitor electrode material
A supercapacitor and electrode material technology, which is applied in the field of silky peat material and silky peat electrode material, can solve the problems of expensive raw materials, battery environmental pollution, etc., and achieve strong repeatability, enhanced cycle performance, and simple and easy operation line effect
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Embodiment 1
[0030] A preparation method of silk grass charcoal-based supercapacitor electrode material, comprising the following steps:
[0031] Step 1. After washing the silk grass with ethanol and deionized water respectively, dry it at a temperature of 80°C for 24 hours;
[0032] Step 2. Put the dried silk grass in a porcelain boat and place it in a high-temperature furnace. Under the protection of argon, raise the temperature to 800°C at a heating rate of 30°C / min, and carbonize it for 2 hours to obtain silk wool Peat;
[0033] Step 3, grinding the silky peat into powder, and sieving with a 100-mesh sieve to obtain silky peat powder with uniform particles;
[0034] Step 4: Add silky grass charcoal powder into 2mol / L potassium hydroxide solution, stir for 30 minutes, then directly evaporate and dry the mixed material liquid, and heat up to 800°C at a heating rate of 30°C / min. Velocity into the physical activator CO 2 , activated for 2 hours, cooled naturally to obtain activated silk...
Embodiment 2
[0040] A preparation method of silk grass charcoal-based supercapacitor electrode material, comprising the following steps:
[0041] Step 1. After washing the silk grass with ethanol and deionized water respectively, dry it at a temperature of 100°C for 24 hours;
[0042] Step 2. Put the dried silk grass in a porcelain boat and place it in a high-temperature furnace. Under the protection of argon, raise the temperature to 900°C at a heating rate of 15°C / min, and carbonize it for 2 hours to obtain silk wool Peat;
[0043] Step 3, grinding the silky peat into powder, and sieving with a 100-mesh sieve to obtain silky peat powder with uniform particles;
[0044] Step 4: Add silky grass charcoal powder into 2mol / L sodium hydroxide solution, stir for 30 minutes, then directly evaporate and dry the mixed material liquid, and heat up to 900°C at a heating rate of 15°C / min. Velocity into the physical activator CO 2 , activated for 2 hours, cooled naturally to obtain activated silky ...
Embodiment 3
[0047] A preparation method of silk grass charcoal-based supercapacitor electrode material, comprising the following steps:
[0048] Step 1. After washing the silk grass with ethanol and deionized water respectively, dry it at a temperature of 120°C for 24 hours;
[0049] Step 2. Put the dried silk grass in a porcelain boat and place it in a high-temperature furnace. Under the protection of argon, raise the temperature to 750°C at a rate of 20°C / min, and carbonize it for 2 hours to obtain silk wool Peat;
[0050] Step 3, grinding the silky peat into powder, and sieving with a 100-mesh sieve to obtain silky peat powder with uniform particles;
[0051] Step 4: Add silky grass charcoal powder into 2mol / L potassium hydroxide solution, stir for 30 minutes, then directly evaporate and dry the mixed material liquid, and heat up to 750°C at a heating rate of 20°C / min. Velocity into the physical activator CO 2 , activated for 2 hours, cooled naturally to obtain activated silky peat ...
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