Highly conductive and flexible molybdenum oxide nanopaper for high volumetric supercapacitor electrode

• Published in: Journal of materials chemistry. A, Materials for energy and sustainability Vol. 5; no. 6; pp. 2897 - 2903
• Main Authors: Huang, Liang, Yao, Bin, Sun, Jiyu, Gao, Xiang, Wu, Jiabin, Wan, Jun, Li, Tianqi, Hu, Zhimi, Zhou, Jun
• Format: Journal Article
• Language: English
• Published: 2017
• Subjects: Assembling; Capacitance; chemistry; Devices; Electrodes; electronic equipment; energy; Filtration; molybdenum; Molybdenum oxides; nanomaterials; Nanostructure; Renewable energy
• ISSN: 2050-7488; 2050-7496; 2050-7496
• DOI: 10.1039/C6TA10433A

Paper-like electrodes with high conductivity and flexibility hold great potential for assembling high-performance flexible electronic devices. In this study, a flexible conductive film was fabricated via vacuum filtration using highly conductive MoO 3−x ultralong nanobelts. This film has low sheet resistance of 5.1 Ω sq −1 and exhibits a stable three-dimensional structure even under 1000 times of bending test. Significantly, this free-standing film has a high volumetric capacitance of 652 F cm −3 . Moreover, a symmetric device based on this electrode demonstrates good cycling stability with a capacitance retention of 85.7% after 25 000 cycles. We anticipate that this strategy can also be applied to other three-dimensional flexible porous films based on one-dimensional conductive nanostructure, which could open up new opportunities for energy storage and conversion.