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Three-Dimensional Porous Ti3C2Tx-NiO Composite Electrodes with Enhanced Electrochemical Performance for Supercapacitors

Department of Materials Science and Engineering, College of Mechanics and Materials, Hohai University, Nanjing 211100, China
Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
Key Laboratory of Superlight Materials & Surface Technology (Harbin Engineering University), Ministry of Education, Harbin 150001, China
Author to whom correspondence should be addressed.
Materials 2019, 12(1), 188;
Received: 5 December 2018 / Revised: 26 December 2018 / Accepted: 28 December 2018 / Published: 8 January 2019
(This article belongs to the Special Issue MAX Phases and MXenes: Synthesis and Applications)
PDF [2008 KB, uploaded 8 January 2019]


Ti3C2Tx and Ti3C2Tx-NiO composites with three-dimensional (3D) porous networks were successfully fabricated via vacuum freeze-drying. The microstructure, absorption, and electrochemical properties of the developed composites were investigated. Nickel oxide (NiO) nanoparticles could be evenly distributed on the three-dimensional network of three-dimensional Ti3C2Tx using solution processing. When employed as electrochemical capacitor electrodes in 1 M environmentally friendly sodium sulfate, Na2SO4, solution, the three-dimensional porous Ti3C2Tx-NiO composite electrodes exhibited considerable volume specific capacitance as compared to three-dimensional porous Ti3C2Tx. The three-dimensional porous Ti3C2Tx-NiO composite delivered a remarkable cycling performance with a capacitance retention of up to 114% over 2500 cycles. The growth trend of the capacitance with NiO content shows that nickel oxide plays a crucial role in the composite electrodes. These results present a roadmap for the development of convenient and economical supercapacitors in consideration with the possibilities of morphological control and the extensibility of the process. View Full-Text
Keywords: MXene; porous Ti3C2Tx-NiO composite; freeze-drying; electrode; supercapacitor MXene; porous Ti3C2Tx-NiO composite; freeze-drying; electrode; supercapacitor

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Zhang, K.; Ying, G.; Liu, L.; Ma, F.; Su, L.; Zhang, C.; Wu, D.; Wang, X.; Zhou, Y. Three-Dimensional Porous Ti3C2Tx-NiO Composite Electrodes with Enhanced Electrochemical Performance for Supercapacitors. Materials 2019, 12, 188.

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