Method of preparing super capacitor electrode material through pyrolysis of waste and old rubber powder
A technology for supercapacitors and waste rubber powder, which is applied in hybrid capacitor electrodes, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of complex preparation process and high equipment requirements, and achieve the effect of simple process, low cost and good stability.
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Embodiment 1
[0024] Put the waste tire rubber powder into a tubular muffle furnace, raise the temperature to 700 °C under the protection of nitrogen, keep it warm for 2 hours, and obtain regenerated activated carbon after cooling; put the regenerated activated carbon into a mortar, add potassium hydroxide of the same quality The powder was ground for 30 minutes, washed with water and filtered until neutral, and dried in vacuum for 24 hours to obtain a carbon material doped with heteroatoms such as S and N, which was designated as C-700.
Embodiment 2
[0026] Put the waste tire rubber powder into a tubular muffle furnace, raise the temperature to 800 °C under the protection of nitrogen, keep it warm for 2 hours, and obtain regenerated activated carbon after cooling; put the regenerated carbon black into a mortar, add the same mass of hydrogen oxide Potassium powder was ground for 30 minutes, washed with water and filtered until neutral, and dried in vacuum for 24 hours to obtain a carbon material doped with heteroatoms such as S and N, which was designated as C-800.
[0027] The cyclic voltammetry curve of the heteroatom-doped carbon material (C-800) prepared in this example at a scan rate of 50 mV / s in 1 mol / L sulfuric acid aqueous solution, see figure 1 ; where the abscissa is the potential and the ordinate is the current.
[0028] In this example, heteroatom-doped carbon materials (C-800) were prepared in 1 mol / L sulfuric acid aqueous solution, and at different current densities (1 A / g, 2 A / g, 3A / g, 5 A / g) Under the char...
Embodiment 3
[0032] Put the waste tire rubber powder into a tubular muffle furnace, raise the temperature to 900 °C under the protection of nitrogen, keep it warm for 2 hours, and obtain regenerated activated carbon after cooling; put the regenerated activated carbon into a mortar, add potassium hydroxide of the same quality The powder was ground for 30 minutes, washed with water and filtered until neutral, and dried in vacuum for 24 hours to obtain a carbon material doped with heteroatoms such as S and N, which was designated as C-900.
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