Elucidating d-π conjugated two-dimensional 2,3,6,7,10,11-hexahydroxytriphenylene based conductive metal-organic framework for hybrid supercapacitors

IF 4.5 3区化学 Q1 Chemical Engineering Journal of Electroanalytical Chemistry Pub Date : 2023-08-15 DOI:10.1016/j.jelechem.2023.117564

Muhammad Zahir Iqbal , Misbah Shaheen , Muhammad Waqas Khan , Salma Siddique , Sidra Farid , Sikandar Aftab , Saikh Mohammad Wabaidur

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引用次数: 1

Abstract

Electrochemical energy technology demands highly proficient and stable systems which ultimately rely upon the discovery and development of promising electrode materials. Here, we report a two-dimensional conductive nickel- metal organic framework (Ni-MOF) for energy storage application. A novel Ni- based MOF was synthesized by utilizing a distinctive ligand 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP termed as Ni₃(HHTP)₂. The highly conductive, porous and stable two dimensional $π$ -conjugated structure of HHTP makes Ni₃(HHTP)₂ an auspicious contender for energy storage applications. We characterize the Ni₃(HHTP)₂ developed through hydrothermal route for its structural properties and then explore its energy storage profile by fabricating the hybrid energy storage device. The Ni₃(HHTP)₂ based asymmetric device exhibits the capacity of 194 C/g providing the energy (E_s) and power density (P_s) of 43 Wh/kg and 2400 W/kg, respectively. We then scrutinize its capacitive and diffusive components by calculating regression parameters k₁ and k₂ using Dunn’s model to bring further insight into the electrochemical characteristics of the electrode material. Ni₃(HHTP)₂ is an appealing member of 2D conductive MOFs to utilize for energy storage applications.

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杂化超级电容器用d-π共轭二维2,3,6,7,10,11-六羟基三苯导电金属-有机框架的研究

电化学能源技术需要高度熟练和稳定的系统，最终依赖于有前途的电极材料的发现和发展。本文报道了一种用于储能的二维导电镍金属有机骨架(Ni-MOF)。利用独特的配体2,3,6,7,10,11-六羟基三苯(HHTP)合成了一种新型镍基MOF，称为Ni3(HHTP)2。HHTP的高导电性、多孔性和稳定的二维π共轭结构使Ni3(HHTP)2成为储能应用的有力竞争者。我们对水热法制备的Ni3(HHTP)2进行了结构表征，并通过制造混合储能装置探索了其储能特性。基于Ni3(HHTP)2的非对称器件的容量为194 C/g，能量(Es)和功率密度(Ps)分别为43 Wh/kg和2400 W/kg。然后，我们通过使用Dunn的模型计算回归参数k1和k2来仔细检查其电容和扩散成分，以进一步了解电极材料的电化学特性。Ni3(HHTP)2是一种具有吸引力的二维导电mof，可用于储能应用。

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来源期刊

Journal of Electroanalytical Chemistry Chemical Engineering-General Chemical Engineering

CiteScore

7.50

自引率

6.70%

发文量

912

审稿时长

>12 weeks

期刊介绍： The Journal of Electroanalytical Chemistry is the foremost international journal devoted to the interdisciplinary subject of electrochemistry in all its aspects, theoretical as well as applied. Electrochemistry is a wide ranging area that is in a state of continuous evolution. Rather than compiling a long list of topics covered by the Journal, the editors would like to draw particular attention to the key issues of novelty, topicality and quality. Papers should present new and interesting electrochemical science in a way that is accessible to the reader. The presentation and discussion should be at a level that is consistent with the international status of the Journal. Reports describing the application of well-established techniques to problems that are essentially technical will not be accepted. Similarly, papers that report observations but fail to provide adequate interpretation will be rejected by the Editors. Papers dealing with technical electrochemistry should be submitted to other specialist journals unless the authors can show that their work provides substantially new insights into electrochemical processes.