title: Mesoporous coaxial titanium nitride-vanadium nitride fibers of core-shell structures for high-performance supercapacitors.
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.
authors: Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
authors: Xinhong
authors: X
authors: Zhou
authors: Chaoqun
authors: C
authors: Shang
authors: Lin
authors: L
authors: Gu
authors: Shanmu
authors: S
authors: Dong
authors: Xiao
authors: X
authors: Chen
authors: Pengxian
authors: P
authors: Han
authors: Lanfeng
authors: L
authors: Li
authors: Jianhua
authors: J
authors: Yao
authors: Zhihong
authors: Z
authors: Liu
authors: Hongxia
authors: H
authors: Xu
authors: Yuwei
authors: Y
authors: Zhu
authors: Guanglei
authors: G
authors: Cui
mesh_terms: D000641:Ammonia / Q000737:chemistry; D058266:Dielectric Spectroscopy; D025802:Electric Capacitance; D010084:Oxidation-Reduction; D056951:Photoelectron Spectroscopy; D016062:Porosity; D014025:Titanium / Q000737:chemistry*; D014639:Vanadium / Q000737:chemistry*
chemical_list: D014639:Vanadium; C041500:titanium nitride; D000641:Ammonia; D014025:Titanium