Yu Tianliang, Wang Youfu, Jiang Kaiyue, Zhai Guangqun, Ke Changchun, Zhang Jichao, Li Jiantong, Tranca Diana, Kymakis Emmanuel, Zhuang Xiaodong
meso-Entropy Matter Lab, Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou, 213164, China.
Themeso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
Chemistry. 2021 Apr 7;27(20):6340-6347. doi: 10.1002/chem.202100171. Epub 2021 Mar 5.
Coordination polymer frameworks (CPFs) have broad applications due to their excellent features, including stable structure, intrinsic porosity, and others. However, preparation of thin-film CPFs for energy storage and conversion remains a challenge because of poor compatibility between conductive substrates and CPFs and crucial conditions for thin-film preparation. In this work, a CPF film was prepared by the coordination of the anisotropic four-armed ligand and Cu at the liquid-liquid interface. Such film-based micro-supercapacitors (MSCs) are fabricated through high-energy scribing and electrolytes soaking. As-fabricated MSCs displayed high volumetric specific capacitance of 121.45 F cm . Besides, the volumetric energy density of MSCs reached 52.6 mWh cm , which exceeds the electrochemical performance of most reported CPF-based MSCs. Especially, the device exhibited alternating current (AC) line filtering performance (-84.2° at 120 Hz) and a short resistance capacitance (RC) constant of 0.08 ms. This work not only provides a new CPF for MSCs with AC line filtering performance but also paves the way for thin-film CPFs preparation with versatile applications.
配位聚合物框架（CPFs）因其优异的特性而具有广泛的应用，包括结构稳定、固有孔隙率等。然而，由于导电基底与CPFs之间的相容性差以及薄膜制备的关键条件，制备用于能量存储和转换的薄膜CPFs仍然是一个挑战。在这项工作中，通过在液-液界面使各向异性的四臂配体与铜配位制备了CPF薄膜。通过高能划刻和电解质浸泡制备了这种基于薄膜的微型超级电容器（MSCs）。所制备的MSCs表现出121.45 F cm的高体积比电容。此外，MSCs的体积能量密度达到52.6 mWh cm，超过了大多数已报道的基于CPF的MSCs的电化学性能。特别是，该器件表现出交流（AC）线路滤波性能（在120 Hz时为-84.2°）和0.08 ms的短电阻电容（RC）常数。这项工作不仅为具有AC线路滤波性能的MSCs提供了一种新的CPF，也为具有广泛应用的薄膜CPFs制备铺平了道路。
