Microfluidic-spinning construction of black-phosphorus-hybrid microfibres for non-woven fabrics toward a high energy density flexible supercapacitor.
Microfluidic-spinning construction of black-phosphorus-hybrid microfibres for non-woven fabrics toward a high energy density flexible supercapacitor.
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用于无纺布的黑磷混合微纤维的微流体纺丝结构，用于高能量密度柔性超级电容器
DOI：
10.1038/s41467-018-06914-7
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发表时间：
2018-11-01
影响因子：
16.6
通讯作者：
Chen S
中科院分区：
文献类型：
--
作者：
Wu X;Xu Y;Hu Y;Wu G;Cheng H;Yu Q;Zhang K;Chen W;Chen S
柔性超级电容器最近引起了人们的强烈兴趣。然而，通过实用材料和合成技术实现高能量密度是一个重大挑战。在这里，我们开发了一种由黑磷制成的异质结构材料，它与碳纳米管化学桥接。利用微流体纺丝技术，黑磷碳纳米管被进一步组装成非织造纤维织物，作为超级电容器电极提供高性能。该柔性超级电容器具有高能量密度（96.5 mW h cm−3）、大容量电容（308.7 F cm−3）、长循环稳定性和变形耐久性等特点。性能的关键在于黑磷/碳纳米管的开放二维结构、丰富的通道（孔隙<1 nm）、增强的导电性、机械稳定性以及快速的离子传递和离子泛洪。得益于这种设计，高能柔性超级电容器可以为各种电子设备供电（例如，发光二极管、智能手表和显示器）。这样的设计可能会指导下一代可穿戴电子产品的发展。具有灵活性和可变形性的超级电容器对可穿戴设备很有吸引力；然而，实现高能量密度仍然具有挑战性。在这里，作者报告了一种基于黑磷和碳纳米管的无纺布，用于超级电容器，具有显着的性能。
Flexible supercapacitors have recently attracted intense interest. However, achieving high energy density via practical materials and synthetic techniques is a major challenge. Here, we develop a hetero-structured material made of black phosphorous that is chemically bridged with carbon nanotubes. Using a microfluidic-spinning technique, the hybrid black phosphorous–carbon nanotubes are further assembled into non-woven fibre fabrics that deliver high performance as supercapacitor electrodes. The flexible supercapacitor exhibits high energy density (96.5 mW h cm−3), large volumetric capacitance (308.7 F cm−3), long cycle stability and durability upon deformation. The key to performance lies in the open two-dimensional structure of the black phosphorous/carbon nanotubes, plentiful channels (pores <1 nm), enhanced conduction, and mechanical stability as well as fast ion transport and ion flooding. Benefiting from this design, high-energy flexible supercapacitors can power various electronics (e.g., light emitting diodes, smart watches and displays). Such designs may guide the development of next-generation wearable electronics. Supercapacitors that exhibit flexibility and deformability are attractive for wearable devices; however achieving high energy density remains challenging. Here the authors report a non-woven fabric based on black phosphorus and carbon nanotubes for use in a supercapacitor with notable performance.
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