Preparation and electrochemical performance of binder-free sodium vanadium bronze thin film electrodes based on a low temperature liquid phase deposition method

The NaV6O15 films with interesting morphologies have been prepared by a new, facial and low-cost low temperature liquid phase deposition and combined with an annealing process. The obtained films on ITO substrates have been directly used as electrodes without adding any other conductive agent or bin...

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Bibliographic Details
Published in:Materials chemistry and physics 2020-07, Vol.249, p.122935, Article 122935
Main Authors: Chen, Jing, Xu, Hai-Yan, Ruan, Jun-Hai, Xin, Yue-Ming, Li, Yan, Li, Dong-Cai, Wang, Ai-Guo, Sun, Dao-Sheng
Format: Article
Language:English
Subjects:
Annealing
Composition
Electrochemical analysis
Electrochemical performance
Electrodes
Liquid phase deposition
Liquid phases
Low temperature
Morphology
Nanorod
Nanorods
NaV6O15 film
Single crystals
Sodium compounds
Structural stability
Substrates
Thin films
Vanadates
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Summary:The NaV6O15 films with interesting morphologies have been prepared by a new, facial and low-cost low temperature liquid phase deposition and combined with an annealing process. The obtained films on ITO substrates have been directly used as electrodes without adding any other conductive agent or binder. The influences of the calcination temperature on the composition, morphology and electrochemical property of the products were investigated in detail. With the increase of annealing temperature, the single crystal sodium vanadate nanorods gradually formed. As a cathode, sodium vanadate nanorods annealed at 500 °C exhibit better structural stability and electrochemical performance than those annealed at 300 °C and 400 °C. The results have confirmed that the annealing treatment has a great influence on the composition, morphology, and electrochemical properties of sodium vanadate films, which might provide more insights about the effect of the structure on the electrochemical properties of sodium vanadate films. [Display omitted] •NaV6O15 thin films were prepared by a new low-temperature liquid deposition method.•The NaV6O15 films annealed at higher temperature consisted of homogeneous nanorods.•The morphology of NaV6O15 films changed with the increase of annealing temperature.•The obtained NaV6O15 films on ITO substrates have been directly used as electrodes.•The NaV6O15 films annealed at 500 °C exhibited better electrochemical properties.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2020.122935