title: Titanium Oxynitride Nanoparticles Anchored on Carbon Nanotubes as Energy Storage Materials.
abstract: Sub-8 nm titanium oxynitride (TiON) nanoparticles were uniformly formed on the surface of carbon nanotubes (CNTs) by annealing amorphous TiO2 (a-TiO2) conformally coated CNTs (CNTs/a-TiO2) at 600 °C in ammonia gas. The novel CNTs/TiON nanocomposite was systematically characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy imaging (HRTEM), scanning transmission electron microscopy-energy dispersive spectroscopy (STEM-EDX), and X-ray photoelectron spectroscopy (XPS). The results show that Ti, O, and N are homogeneously distributed in TiON nanoparticles. The specific capacitance of CNTs/TiON exhibits 187 F g(-1) at a current density of 0.5 A g(-1), which is much higher than that of CNTs (33.4 F g(-1)) and CNTs/TiO2 (83.4 F g(-1)) obtained by annealing CNTs/a-TiO2 at 450 °C in nitrogen gas. CNTs/TiON also exhibits enhanced cycle durability, which enables it to be considered as a promising candidate for supercapacitors.
authors.forename: Litao
authors.initials: L
authors.lastname: Yan
authors.forename: Gen
authors.initials: G
authors.lastname: Chen
authors.affiliation: School of Chemical & Biomolecular Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
authors.forename: Shuai
authors.initials: S
authors.lastname: Tan
authors.forename: Meng
authors.initials: M
authors.lastname: Zhou
authors.affiliation: College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215000, P.R. China.
authors.forename: Guifu
authors.initials: G
authors.lastname: Zou
authors.forename: Shuguang
authors.initials: S
authors.lastname: Deng
authors.forename: Sergei
authors.initials: S
authors.lastname: Smirnov
authors.forename: Hongmei
authors.initials: H
authors.lastname: Luo
keywords: carbon nanotubes; conformal coating; electrochemical performance; supercapacitor; titanium oxynitride