大峰矿无烟煤制备超级电容器电极材料研究

摘要

以大峰矿无烟煤制备超级电容器电极材料，采用低温氮吸附法和X射线衍射法对最佳条件下制备的活性炭进行分析。结果表明：最佳条件下制备的活性炭电极材料在6 mol／L的KOH电解液中比电容为344．976 F／g。制备的活性炭呈无定型结构，主要以微孔为主，还有一定比例的中孔，孔径分布合理。电极材料电容性能良好、可逆性好，以双电层储能为主，循环性能良好，电容保持率在90％以上。%Dafeng mine anthracite was used to prepare supercapacitor electrode material, low-temperature nitrogen adsorption and X-ray diffraction were applied to analyze the preparation of activated carbon under optimal conditions. The results showed that the specific capacitance in 6mol/L KOH electrolyte of activated carbon electrode material prepared under optimal conditions is 344. 976F/g. The activated carbon was in amorphous structure with reasonable pore size distribution, mainly comprised of micropores, and a certain percentage of mesopores. The electrode material has favorable capacitive performance, reversibility and cycle performance with double electrode layer energy storage, and the capacitance retention rate is over 90%.