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以真菌木耳作为碳源、KOH为活化剂,制备了具有超大比表面积的活性碳材料,比表面积和孔容分别达到了3160m~2/g和1.73cm~3/g。利用X射线衍射、扫描电子显微镜、透射电子显微镜,氮气吸脱附分析及电化学测试对样品的微观形貌,孔道结构和电化学性能进行表征。实验结果表明,当木耳碳化物与KOH的质量比为1∶4时,材料获得了最大的比表面积和孔容。在6mol/L KOH电解液中,1A/g电流密度下,材料的比容量达到了292F/g,表现出优异的超电容性能。
Fungal fungus as carbon source and KOH as activator, activated carbon material with super-large specific surface area was prepared. The specific surface area and pore volume reached 3160m 2 / g and 1.73cm 3 / g, respectively. The microstructure, pore structure and electrochemical properties of the samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, nitrogen adsorption-desorption analysis and electrochemical tests. The experimental results show that when the mass ratio of fungus carbide to KOH is 1: 4, the material has the largest specific surface area and pore volume. In 6mol / L KOH electrolyte, 1A / g current density, the specific capacity of the material reached 292F / g, showing excellent supercapacitor performance.