Feng Mengyue, Zhang Yang, Zhu Xiaolin, Chen Wenxing, Lu Wangyang, Wu Guan
National Engineering Lab for Textile Fiber Materials & Processing Technology, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China.
Zhejiang Provincial Innovation Center of Advanced Textile Technology, Shaoxing, 312000, P. R. China.
Angew Chem Int Ed Engl. 2023 Aug 14;62(33):e202307195. doi: 10.1002/anie.202307195. Epub 2023 Jul 10.
Designing deformable supercapacitors (D-SCs) that have robust skeleton and smoothly active channels for charges kinetic migration and faradic storage are highly crucial for wearable systems. Here, we develop the high-performance D-SCs made of the covalent organic frameworks(COF)@amino-modified Ti C T deposited on decorated nylon 6 (DPA) film (COF@N-Ti C T /DPA) via layer-by-layer fabrication. The hierarchical COF@N-Ti C T /DPA exhibits admirable specific capacitance, rate performance and cycling stability in three-electrode system due to the superior H storage property and large interfacial charge transfer clarified by density functional theory calculations. Additionally, the solid-state D-SCs deliver favourable energy density and practical energy-supply applications. Particularly, the solid-state D-SCs present high deformable stabilities, with regard to 80.7, 80.6 and 83.4 % capacitance retention after 5000 bending cycles, 2000 stretching cycles and 5000 folding cycles, separately.
设计具有坚固骨架和用于电荷动力学迁移及法拉第存储的顺畅活性通道的可变形超级电容器（D-SC）对于可穿戴系统至关重要。在此，我们通过逐层制造开发了由共价有机框架（COF）@氨基修饰的Ti C T沉积在装饰尼龙6（DPA）薄膜上制成的高性能D-SC（COF@N-Ti C T /DPA）。由于密度泛函理论计算表明其具有优异的氢存储性能和大的界面电荷转移，分层的COF@N-Ti C T /DPA在三电极系统中表现出令人钦佩的比电容、倍率性能和循环稳定性。此外，固态D-SC具有良好的能量密度和实际能量供应应用。特别是，固态D-SC具有高可变形稳定性，在5000次弯曲循环、2000次拉伸循环和5000次折叠循环后，电容保持率分别为80.7%、80.6%和83.4%。
