Abstract Biomass porous micro/nanostructures activated carbon materials have attracted tremendous attention in the field of energy storage due to their high specific surface area, excellent electrical conductivity, low cost and environmental benignity. In this paper, we innovatively use celery as a biomass carbon precursor to prepare nitrogen-doped hierarchical porous carbon materials by activation, polymerization and carbonization. Prepared Celery-derived activated carbon is utilized to synthesize activated carbon/polyaniline composite material by wet-chemistry method and further carbonized to obtain nitrogen-doped hierarchical porous carbon. The nitrogen-doped hierarchical porous carbon materials are used as the active electrode materials for supercapacitors. It exhibits high specific capacitance of 402 F g−1 in 1 M H2SO4 electrolyte at 1 A g−1. After 10,000 GCD cycles, material still displays cycling stability of 97% capacitance retention. The outstanding electrochemical performance endows nitrogen-doped hierarchical porous carbon with enormous prospects as a supercapacitor electrode material.

中文翻译：

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使用生物质衍生的活性炭/碳化聚苯胺复合材料的氮掺杂分级多孔碳用于超级电容器电极

摘要 生物质多孔微/纳米结构活性炭材料以其高比表面积、优良的导电性、低成本和环境友好性等优点在储能领域引起了极大的关注。在本文中，我们创新地以芹菜作为生物质碳前驱体，通过活化、聚合和碳化制备了氮掺杂的分级多孔碳材料。制备的芹菜衍生活性炭采用湿化学法合成活性炭/聚苯胺复合材料，进一步碳化得到氮掺杂分级多孔碳。氮掺杂分级多孔碳材料用作超级电容器的活性电极材料。它在 1 A g-1 的 1 M H2SO4 电解质中表现出 402 F g-1 的高比电容。在 10,000 次 GCD 循环后，材料仍显示出 97% 电容保持率的循环稳定性。优异的电化学性能赋予了氮掺杂分级多孔碳作为超级电容器电极材料的巨大前景。