新型炭材料（中英文）2023，Vol.38Issue(6)：1050-1058,9.DOI:10.1016/S1872-5805(23)60752-8
煤基富氧多孔炭纳米片的制备及其超级电容器性能
Fabrication of coal-based oxygen-rich porous carbon nanosheets for high-performance supercapacitors
摘要
Abstract
The modification and optimization of porous carbon electrodes is key to achieving high-performance supercapacitors.Oxygen-rich porous carbon nanosheets(OPCNs)with a two-dimensional(2D)structure produced from the solid by-products of the coal industry were prepared by taking advantage of the rigid confinement of 2D MgAl-layered double hydroxides(MgAl-LDH)combined with KOH activation.The influence of carbonization temperature on the microstructure and surface properties of the OPCNs was investigated.The surface morphologies/compositions and surface textures of the prepared OPCNs were observed and analyzed by SEM,TEM,N2 adsorption and desorption,elemental analysis,etc.The optimized carbon sample activated at 700 °C(OPCN-700)had a high oxygen content of 24.4 wt%,a large specific surface area of 2 388 m2 g-1,and good wettability.In addition,the abundant micropores and 2D nanosheet structure of OPCN-700 provide efficient storage and transport for electrolyte ions.Because of this,when used as the electrode for a supercapacitor it has a high specific capacitance of 382 F g-1 at 0.5 A g-1,an excellent rate performance and cycling stability.关键词
超级电容器/多孔炭材料/MgAl-LDH/氧原子掺杂Key words
Supercapacitor/Porous carbon materials/MgAl-LDH/Oxygen atom doping分类
化学化工引用本文复制引用
车晓刚,靳皎,张艺潇,刘思宇,王满,杨卷..煤基富氧多孔炭纳米片的制备及其超级电容器性能[J].新型炭材料（中英文）,2023,38(6):1050-1058,9.基金项目
National Natural Science Foundation of China(22278328),Shaanxi Province Key R&D Program Project(2023-YBGY-292).感谢国家自然科学基金 (22278328) 和陕西省重点研发计划项目 (2023-YBGY-292). （22278328）
