Abstract Easy shapeable highly porous and robust three dimensional (3D) nano-carbon architectures (3D NCA) are crucial for the practical applications of electrochemical energy storage devices. Here, a facile easy shapeable nitrogen-doped graphene coated 3D NCA exhibiting an ultra-high specific surface area, remarkable robustness, and excellent aqueous wettability is reported. A 3D single-walled carbon nanotube (SWCNT) hydrogel composed of isolated SWCNTs is first prepared, and then a thin polydopamine (pDA) layer is uniformly coated onto the fabricated 3D SWCNT hydrogel via an in situ polymerization of dopamine. A nitrogen-doped graphene-coated 3D NCA is obtained via pyrolysis of the pDA-coated 3D NCA. By decorating this highly porous nitrogen-doped 3D NCA onto helical micro carbon fibers, a highly stretchable (∼100% strain) wire-type supercapacitor (WTSC) is fabricated. The areal specific power and energy density of the WTSC are determined to be 2.59 mW cm−2 and 1.1 μWh cm−2, respectively. These values are remarkably larger than those previously reported WTSCs. Moreover, our WTSC maintains more than 91% of its capacitance after 10,000 stretch-release cycles at tensile strains of up to 50%. The combination of the easy shapeable, robust and highly porous nitrogen-doped 3D NCA paves a new way for the development of high-performance wearable textile-based energy devices.

中文翻译：

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用于可拉伸线型超级电容器的高度多孔且易于成型的聚多巴胺衍生石墨烯涂层单壁碳纳米管气凝胶

摘要 易于成型的高度多孔且坚固的三维（3D）纳米碳结构（3D NCA）对于电化学储能装置的实际应用至关重要。在这里，报道了一种易于成型的氮掺杂石墨烯涂层 3D NCA，具有超高的比表面积、显着的稳健性和优异的水润湿性。首先制备由孤立的单壁碳纳米管组成的 3D 单壁碳纳米管 (SWCNT) 水凝胶，然后通过多巴胺的原位聚合将聚多巴胺 (pDA) 薄层均匀涂覆在制备的 3D SWCNT 水凝胶上。氮掺杂石墨烯涂层 3D NCA 是通过热解 pDA 涂层 3D NCA 获得的。通过将这种高度多孔的掺氮 3D NCA 装饰到螺旋状微碳纤维上，制造了高度可拉伸（~100% 应变）的线型超级电容器（WTSC）。WTSC 的面积比功率和能量密度分别确定为 2.59 mW cm-2 和 1.1 μWh cm-2。这些值明显大于先前报道的 WTSC。此外，我们的 WTSC 在拉伸应变高达 50% 的情况下，在 10,000 次拉伸-释放循环后仍保持其电容的 91% 以上。易于成型、坚固且高度多孔的掺氮 3D NCA 的组合为开发高性能可穿戴纺织品能源设备铺平了道路。我们的 WTSC 在拉伸应变高达 50% 的情况下，经过 10,000 次拉伸-释放循环后，仍能保持其电容的 91% 以上。易于成型、坚固且高度多孔的掺氮 3D NCA 的组合为开发高性能可穿戴纺织品能源设备铺平了道路。我们的 WTSC 在拉伸应变高达 50% 的情况下，经过 10,000 次拉伸-释放循环后，仍能保持其电容的 91% 以上。易于成型、坚固且高度多孔的掺氮 3D NCA 的组合为开发高性能可穿戴纺织品能源设备铺平了道路。