The heteroatom (S, N) content of the electrode material influences supercapacitor performance. Coals, which are abundant in nature, have different heteroatom contents. Activated carbon materials were synthesised from two different demineralised coal with low and high sulphur contents using chemical activation method. The samples are characterised in terms of total surface area, pore volume and size distribution, elemental, Fourier Transform Infrared (FTIR) Spectroscopy, X-ray Photo-electron Spectroscopy (XPS), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS) and X-Ray Diffraction (XRD) analyses. The total surface areas of the samples are 934 and 1869 m²g⁻¹. While the sulphur contents of the raw coals are 12.35 % and 0.47 %, the sulphur content of the activated carbons produced from these raw materials are 3.5 % and undetectable. Supercapacitor performance is tested by Cyclic Voltammetry (CV), Electrochemical Impedance Spectroscopy (EIS) and Galvanostatic Charge-Discharge (GCD) techniques. The analysis shows specific capacitances (C_cell, two-electrode cell) of 124.9 F.g⁻¹ and 65.1 F.g⁻¹ at 1 A.g⁻¹ current density for the activated carbons produced from low and high sulphur contents, respectively. The tests show that demineralised coal with a high natural sulphur content is an ideal raw material for producing high value added activated carbon for supercapacitors.

电极材料中杂原子（S，N）的含量会影响超级电容器的性能。自然界中丰富的煤具有不同的杂原子含量。活性炭原料是采用化学活化法，从两种不同的低硫和高硫矿物质中合成的。样品的特征在于总表面积，孔体积和尺寸分布，元素，傅里叶变换红外（FTIR）光谱，X射线光电子能谱（XPS），扫描电子显微镜（SEM），能量色散X射线光谱（EDS）和X射线衍射（XRD）分析。样品的总表面积为934和1869 m ² g ^-1。原煤的硫含量为12.35％和0.47％，而由这些原料生产的活性炭的硫含量为3.5％，无法检测到。超级电容器的性能通过循环伏安法（CV），电化学阻抗谱（EIS）和恒电流充放电（GCD）技术进行测试。分析显示，对于低硫含量和高硫含量产生的活性炭，在1 Ag ^-1电流密度下，比电容（C_电池，两电极电池）分别为124.9 Fg ^-1和65.1 Fg ^-1。测试表明，天然硫含量高的软化煤是生产超级电容器高附加值活性炭的理想原料。