Journal of Colloid and Interface Science 502 (2017) 33–43 Contents lists available at ScienceDirect Journal of Colloid and Interface Science journal homepage: www.elsevier.com/locate/jcis Facile preparation of 3D hierarchical coaxial-cable-like Ni-CNTs@beta- (Ni, Co) binary hydroxides for supercapacitors with ultrahigh speciﬁc capacitance Manyu Zhang, Xiaowei Ma, Han Bi, Xuebing Zhao, Chao Wang, Jie Zhang, Yuesheng Li, Renchao Che Laboratory of Advanced Materials, Department of Materials Science, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai 200438, People’s Republic of China graphical a bstract article i nfo abstract Article history: A facile chemical method for Co doping Ni-CNTs@a-Ni(OH) combining with an in situ phase transforma- Received 15 January 2017 tion process is successfully proposed and employed to synthesize three-dimensional (3D) hierarchical Ni- Revised 2 March 2017 CNTs@b-(Ni, Co) binary hydroxides. This strategy can effectively maintain the coaxial-cable-like structure Accepted 12 April 2017 of Ni-CNTs@a-Ni(OH) and meanwhile increase the content of Co as much as possible. Eventually, the Available online 13 April 2017 speciﬁc capacitances and electrical conductivity of the composites are remarkably enhanced. The opti- 1 1 2 mized composite exhibits high speciﬁc capacitances of 2861.8 F g at 1 A g (39.48 F cm at Keywords: 2 1
Journal of Colloid and Interface Science – Elsevier
Published: Sep 15, 2017
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