3D Printing of Additive-Free 2D Ti3C2Tx (MXene) Ink for Fabrication of Micro-Supercapacitors with Ultra-High Energy Densities
3D Printing of Additive-Free 2D Ti3C2Tx (MXene) Ink for Fabrication of Micro-Supercapacitors with Ultra-High Energy Densities
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DOI：
10.1021/acsnano.9b07325
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发表时间：
2020-01-01
期刊：
影响因子：
17.1
通讯作者：
Beidaghi, Majid
中科院分区：
文献类型：
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作者：
Orangi, Jafar;Hamade, Fatima;Beidaghi, Majid
自供电设备和小型化电子设备的最新发展增加了对能够在有限的占地面积内提供高功率和能量密度的片上能量存储设备的需求。在这里，我们报告了通过无添加剂和水性MXene墨水的三维(3D)打印来制造全固态微型超级电容器(MSCS)。所制备的MSCs得益于二维(2D)Ti3C2Tx MXene的高导电性和优异的电化学性质，以及3D叉指电极结构，以提供高面和体能量密度。我们证明，高浓度的MXene油墨在室温下具有理想的挤出打印粘弹性，因此可以用于在各种衬底上可扩展地制造具有不同结构和电极厚度的MSCs。所开发的印刷工艺可方便地用于在聚合物和纸衬底上制造柔性MSCs。印刷固态器件表现出出众的电化学性能，具有高达1035 mF cm(-2)的极高表面电容。我们的研究介绍了Ti3C2Tx MXene作为制备3D MSCs的极佳选择的电极材料，并展示了MXene墨水在室温下的3D打印。
Recent advances in the development of self-powered devices and miniaturized electronics have increased the demand for on-chip energy storage devices that can deliver high power and energy densities in a limited footprint area. Here, we report the fabrication of all-solid-state micro-supercapacitors (MSCs) through a three-dimensional (3D) printing of additive-free and waterbased MXene ink. The fabricated MSCs benefit from the high electrical conductivity and excellent electrochemical properties of two-dimensional (2D) Ti3C2Tx MXene and a 3D interdigital electrode architecture to deliver high areal and volumetric energy densities. We demonstrate that a highly concentrated MXene ink shows desirable viscoelastic properties for extrusion printing at room temperature and therefore can be used for scalable fabrication of MSCs with various architectures and electrode thicknesses on a variety of substrates. The developed printing process can be readily used for the fabrication of flexible MSCs on polymer and paper substrates. The printed solid-state devices show exceptional electrochemical performance with very high areal capacitance of up to similar to 1035 mF cm(-2). Our study introduces Ti3C2Tx MXene as an excellent choice of electrode material for the fabrication of 3D MSCs and demonstrates 3D printing of MXene inks at room temperature.