Multi-element doped porous carbon materials are considered as one of the most promising electrode materials for supercapacitors due to their large specific surface area, abundant mesoporous structure, heteroatom doping and good conductivity. Herein, we propose a very simple and effective strategy to prepare nitrogen, sulfur co-doped hierarchical porous carbons (N-S-HPC) by one-step pyrolysis strategy. The effect of sole dopants as a precursor was a major factor in the transformation process. The optimized N-S-HPC-2 possesses a typical hierarchically porous framework (micropores, mesopores and macropores) with a large specific surface area (1284.87[Formula: see text]m2 g[Formula: see text] and N (4.63 atomic %), S (0.53 atomic %) doping. As a result, the N-S-HPC-2 exhibits excellent charge storage capacity with a high gravimetric capacitance of 360[Formula: see text]F g[Formula: see text] (1 [Formula: see text]A g[Formula: see text] in three-electrode systems and 178[Formula: see text]F g[Formula: see text] in two-electrode system and long-term cycling life with 87% retention after 10,000 cycles in KOH electrolyte.

中文翻译：

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用于高性能超级电容器的具有分级多孔结构的生物质衍生的 N、S 共掺杂碳的制造

多元素掺杂多孔碳材料具有比表面积大、介孔结构丰富、杂原子掺杂和良好的导电性等优点，被认为是最有前途的超级电容器电极材料之一。在此，我们提出了一种非常简单有效的策略，通过一步热解策略制备氮、硫共掺杂的分级多孔碳（NS-HPC）。作为前体的单一掺杂剂的效果是转变过程中的主要因素。优化后的 NS-HPC-2 具有典型的分级多孔结构（微孔、中孔和大孔），具有较大的比表面积（1284.87[公式：见正文]m2g[公式：见正文]和N（4.63原子%）、S（0.53原子%）掺杂。因此，NS-HPC-2 表现出优异的电荷存储能力，具有 360[公式：参见文本]F g[公式：参见文本]（1 [公式：参见文本]A g[公式：参见text]在三电极系统中和 178[公式：见文本]F g[公式：见文本]在两电极系统中和长期循环寿命，在 KOH 电解质中循环 10,000 次后保持 87%。