NH3诱导原位蚀刻策略衍生用于高性能柔性超级电容器的3D互连多孔MXene/碳点薄膜。

IF 31.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nano-Micro Letters Pub Date : 2023-10-18 DOI:10.1007/s40820-023-01204-4

Yongbin Wang, Ningjun Chen, Bin Zhou, Xuefeng Zhou, Ben Pu, Jia Bai, Qi Tang, Yan Liu, Weiqing Yang

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引用次数: 0

摘要

2D MXene（Ti3CNTx）因其金属导电性、超高电容性和优异的柔韧性而被认为是最有前途的柔性超级电容器电极材料。然而，它在电极制造过程中存在严重的重新堆积问题，限制了离子传输动力学和离子在电极中的可及性，特别是在垂直于电极表面的方向上。在此，我们报道了一种NH3诱导的原位蚀刻策略，以制备用于高性能柔性超级电容器的3D互连多孔MXene/碳点（p-MC）膜。预插层碳点（CDs）首先防止MXene的重新堆积，从而暴露出更多的内部电化学活性位点。部分分解的CDs产生NH3，用于向3D互连p-MC膜原位蚀刻MXene纳米片。得益于结构优点和3D互连的离子传输通道，p-MC膜电极实现了优异的重量电容（在2A g-1下为688.9F g-1）和优异的倍率性能。此外，将优化后的p-MC电极组装成具有高能量密度和优异循环稳定性的不对称固态柔性超级电容器，展示了p-MC电极在实际应用中的巨大前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

NH3-Induced In Situ Etching Strategy Derived 3D-Interconnected Porous MXene/Carbon Dots Films for High Performance Flexible Supercapacitors

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NH3-Induced In Situ Etching Strategy Derived 3D-Interconnected Porous MXene/Carbon Dots Films for High Performance Flexible Supercapacitors

Highlights

Porous MXene (p-MC) films with 3D-interconnected ion transmission paths are constructed by NH₃-induced in situ etching strategy.
The flexible p-MC film electrodes exhibit a superior capacitance of 688.9 F g⁻¹ with a good rate capability.
The as-assembled p-MC solid-state flexible supercapacitors reveal superior electrochemical performance (99.7 F g⁻¹ at 1 A g⁻¹) and excellent flexibility.

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

42.40

自引率

4.90%

发文量

715

审稿时长

13 weeks

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary and open-access journal that focus on science, experiments, engineering, technologies and applications of nano- or microscale structure and system in physics, chemistry, biology, material science, pharmacy and their expanding interfaces with at least one dimension ranging from a few sub-nanometers to a few hundreds of micrometers. Especially, emphasize the bottom-up approach in the length scale from nano to micro since the key for nanotechnology to reach industrial applications is to assemble, to modify, and to control nanostructure in micro scale. The aim is to provide a publishing platform crossing the boundaries, from nano to micro, and from science to technologies.