Abstract Three-dimensional carbon aerogels with high surface area, low cost and excellent structural stability, have shown extraordinary promise for supercapacitors (SCs). Pore-forming and heteroatom-doping have been reported to play an important role in improving the power and energy densities of nanostructured carbon electrodes. We propose novel bamboo-like N/S-codoped carbon nanotube aerogels (NS–CNAs) facilely fabricated through MnO2-templated polymerization, freeze-drying and calcination. The cryptomelane-type MnO2 nanowires are served as self-sacrificing templates and oxidative initiators for polymerization of pyrrole in acidic environment. XPS analysis can confirm the N content of 4.09% and the S content of 0.66%, which are mainly derived from PPy with nitrogen-containing skeletons and PSS with sulfonic acid groups respectively. Based on porous structure and N/S codoping, the assembled NS-CNA SC can provide high supercapacitive performances, such as a specific capacitance of 328 F g−1 (at 1 A g−1), the rate capability of 66.5% (from 1 A g−1 to 10 A g−1), an energy density of 45.6 Wh kg−1 (at 0.5 kW kg−1) and the capacity retention of 97.4% (after 10,000 cycles), opening up a highly-efficient approach to developing high-performance supercapacitors.

中文翻译：

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用于高功率和高能超级电容器的竹状 N/S 共掺杂碳纳米管气凝胶

摘要 具有高表面积、低成本和优异结构稳定性的三维碳气凝胶在超级电容器（SCs）方面显示出非凡的前景。据报道，成孔和杂原子掺杂在提高纳米结构碳电极的功率和能量密度方面发挥着重要作用。我们提出了一种新型竹状 N/S 共掺杂碳纳米管气凝胶（NS-CNA），通过 MnO2 模板聚合、冷冻干燥和煅烧轻松制造。铜锰矿型 MnO2 纳米线用作自牺牲模板和氧化引发剂，用于在酸性环境中聚合吡咯。XPS 分析可以确认 N 含量为 4.09%，S 含量为 0.66%，主要分别来自具有含氮骨架的 PPy 和具有磺酸基团的 PSS。