Nitrided TiO2 nanoparticles/nanotube arrays for better electrochemical properties

[Display omitted] •The high-temperature nitridation is employed to fabricate nitrided TiO2 nanotubes.•Annealing temperature is a key factor to optimize electrochemical properties.•TiO2 nanotube arrays are treated by a hydrothermal solid–gas method.•Nanoparticles/nanotube structure can enhance electr...

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Bibliographic Details
Published in:Chemical physics letters 2019-09, Vol.730, p.340-344
Main Authors: Fan, Haowen, Zhang, Shaoyu, Zhu, Xufei
Format: Article
Language:English
Subjects:
Hydrothermal solid-gas reaction
Nanoparticles/nanotube arrays
Nitridation treatment
TiO2 nanotubes
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Summary:[Display omitted] •The high-temperature nitridation is employed to fabricate nitrided TiO2 nanotubes.•Annealing temperature is a key factor to optimize electrochemical properties.•TiO2 nanotube arrays are treated by a hydrothermal solid–gas method.•Nanoparticles/nanotube structure can enhance electrochemical properties. The high-temperature nitridation treatment and hydrothermal solid-gas reaction are employed to fabricate nitrided TiO2 nanoparticles/nanotube arrays for supercapacitors, to optimize their electrochemical properties. The annealing temperature in NH3 atmosphere was found to affect the chemical constitution and electrochemical performances of as-annealed TiO2 nanotubes. Attributed to the co-contribution of high-temperature nitridation treatment and nanoparticles/nanotube structure, the TiO2 nanoparticles/nanotube arrays annealed in NH3 atmosphere at 700 °C demonstrate the highest specific capacitance of 90.5 mF cm−2.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2019.06.025