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首页> 外文期刊>Chemistry: A European journal >Kinetically Controlled Assembly of Nitrogen-Doped Invaginated Carbon Nanospheres with Tunable Mesopores
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Kinetically Controlled Assembly of Nitrogen-Doped Invaginated Carbon Nanospheres with Tunable Mesopores

机译：具有可调介孔的掺氮侵入碳纳米球的动力学控制组装。

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摘要

Mesoporous hollow carbon nanospheres (MHCS) have been extensively studied owning to their unique structural features and diverse potential applications. A surfactant-free self-assembly approach between resorcinol/formaldehyde and silicon alkoxide has emerged as an important strategy to prepare MHCS. Extending such a strategy to other substituted phenols to produce heterogeneous-atomdoped MHCS remains a challenge due to the very different polymerization kinetics of various resins. Herein, we report an ethylenediamine-assisted strategy to control the cooperative self-assembly between a 3-aminophenol/formaldehyde resin and silica templates. Nitrogen-doped mesoporous invaginated carbon nanospheres (N-MICS) with an N content of 6.18 at %, high specific surface areas (up to 1118 m(2)g(-1)), large pore volumes (2.47 cm(3)g(-1)), and tunable mesopores (3.7-11.1 nm) have been prepared. When used as electrical double-layer supercapacitors, N-MICS show a high capacitance of 261 Fg(-1), an outstanding cycling stability (approximate to 94% capacitance retention after 10000 cycles), and a good rate performance.
机译：介孔中空碳纳米球（MHCS）由于其独特的结构特征和多种潜在应用而得到了广泛的研究。间苯二酚/甲醛和烷氧基硅之间的无表面活性剂自组装方法已经成为制备MHCS的重要策略。由于各种树脂的聚合动力学非常不同，将这种策略扩展到其他取代的苯酚以生产异质原子掺杂的MHCS仍然是一个挑战。在这里，我们报告乙二胺辅助策略来控制3-氨基苯酚/甲醛树脂和二氧化硅模板之间的协同自组装。氮掺杂的介孔内陷碳纳米球（N-MICS），N含量为6.18 at％，比表面积高（最大1118 m（2）g（-1）），大孔体积（2.47 cm（3）g （-1）），并准备了可调中孔（3.7-11.1 nm）。当用作双电层超级电容器时，N-MICS表现出261 Fg（-1）的高电容，出色的循环稳定性（10000次循环后约94％的电容保持率）和良好的倍率性能。

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