| Literature DB >> 21728351 |
Xinhong Zhou1, Chaoqun Shang, Lin Gu, Shanmu Dong, Xiao Chen, Pengxian Han, Lanfeng Li, Jianhua Yao, Zhihong Liu, Hongxia Xu, Yuwei Zhu, Guanglei Cui.
Abstract
In this study, titanium nitride-vanadium nitride fibers of core-shell structures were prepared by the coaxial electrospinning, and subsequently annealed in the ammonia for supercapacitor applications. These core-shell (TiN-VN) fibers incorporated mesoporous structure into high electronic conducting transition nitride hybrids, which combined higher specific capacitance of VN and better rate capability of TiN. These hybrids exhibited higher specific capacitance (2 mV s(-1), 247.5 F g(-1)) and better rate capability (50 mV s(-1), 160.8 F g(-1)), which promise a good candidate for high-performance supercapacitors. It was also revealed by electrochemical impedance spectroscopy (EIS) and X-ray photoelectron spectroscopy (XPS) characterization that the minor capacitance fade originated from the surface oxidation of VN and TiN.Entities:
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Year: 2011 PMID： 21728351 DOI： 10.1021/am200564b
Source DB: PubMed Journal: ACS Appl Mater Interfaces ISSN： 1944-8244 Impact factor: 9.229