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TiO2 nanoparticles-functionalized two-dimensional WO3 for high-performance supercapacitors developed by facile two-step ALD process

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Abstract
TiO2 nanoparticles-functionalized two-dimensional (2D) WO3 (TiO2NP-WO3) films fabricated by the facile two-step atomic layer deposition (ALD) process with following post-annealing at 380 degrees C were investigated as electrode material for supercapacitors. The surface functionalization of 2D WO3 electrode by TiO2 nanoparticles significantly enhanced the specific capacitance by similar to 1.5 times over the pure 2D WO3 electrode. Transition of electric double-layer capacitive behavior to the pseudo-capacitive behavior was also observed. Besides, the TiO2NP-WO3 electrode exhibited faster charge transfer than the pure 2D WO3 electrodes, due to the conduction modulation from the development of TiO2-WO3 heterojunctions. The decoration of TiO2 nanoparticles on 2D WO3 electrodes by this two-step ALD process with the following post-annealing has been solidly proven to a facile and effective method to enhance supercapacitor performances along with advantage of ALD technique for fabrication of large-scale, ultrathin films over other conventional methods. The fabrication strategy of the 2D TiO2NP-WO3 electrodes presented in this work may open a new pathway for the design and functionalization of the other 2D nanomaterials for the energy conversion and storage devices.
Keywords
WO3, TiO2, Atomic layer deposition, Surface functionalization, Supercapacitor, ATOMIC LAYER DEPOSITION, BINDER-FREE ELECTRODES, TUNGSTEN TRIOXIDE, NANOTUBE ARRAYS, ENERGY-STORAGE, THIN-FILMS, GRAPHENE, OXIDE, CARBON, COMPOSITE

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Chicago
Hai, Zhenyin, Mohammad Karbalaeiakbari, Zihan Wei, Chenyang Xue, Hongyan Xu, Jie Hu, Lachlan Hyde, and Serge Zhuiykov. 2017. “TiO2 Nanoparticles-functionalized Two-dimensional WO3 for High-performance Supercapacitors Developed by Facile Two-step ALD Process.” Materials Today Communications 12: 55–62.
APA
Hai, Z., Karbalaeiakbari, M., Wei, Z., Xue, C., Xu, H., Hu, J., Hyde, L., et al. (2017). TiO2 nanoparticles-functionalized two-dimensional WO3 for high-performance supercapacitors developed by facile two-step ALD process. MATERIALS TODAY COMMUNICATIONS, 12, 55–62.
Vancouver
1.
Hai Z, Karbalaeiakbari M, Wei Z, Xue C, Xu H, Hu J, et al. TiO2 nanoparticles-functionalized two-dimensional WO3 for high-performance supercapacitors developed by facile two-step ALD process. MATERIALS TODAY COMMUNICATIONS. 2017;12:55–62.
MLA
Hai, Zhenyin et al. “TiO2 Nanoparticles-functionalized Two-dimensional WO3 for High-performance Supercapacitors Developed by Facile Two-step ALD Process.” MATERIALS TODAY COMMUNICATIONS 12 (2017): 55–62. Print.
@article{8600435,
  abstract     = {TiO2 nanoparticles-functionalized two-dimensional (2D) WO3 (TiO2NP-WO3) films fabricated by the facile two-step atomic layer deposition (ALD) process with following post-annealing at 380 degrees C were investigated as electrode material for supercapacitors. The surface functionalization of 2D WO3 electrode by TiO2 nanoparticles significantly enhanced the specific capacitance by similar to 1.5 times over the pure 2D WO3 electrode. Transition of electric double-layer capacitive behavior to the pseudo-capacitive behavior was also observed. Besides, the TiO2NP-WO3 electrode exhibited faster charge transfer than the pure 2D WO3 electrodes, due to the conduction modulation from the development of TiO2-WO3 heterojunctions. The decoration of TiO2 nanoparticles on 2D WO3 electrodes by this two-step ALD process with the following post-annealing has been solidly proven to a facile and effective method to enhance supercapacitor performances along with advantage of ALD technique for fabrication of large-scale, ultrathin films over other conventional methods. The fabrication strategy of the 2D TiO2NP-WO3 electrodes presented in this work may open a new pathway for the design and functionalization of the other 2D nanomaterials for the energy conversion and storage devices.},
  author       = {Hai, Zhenyin and Karbalaeiakbari, Mohammad and Wei, Zihan and Xue, Chenyang and Xu, Hongyan and Hu, Jie and Hyde, Lachlan and Zhuiykov, Serge},
  issn         = {2352-4928},
  journal      = {MATERIALS TODAY COMMUNICATIONS},
  language     = {eng},
  pages        = {55--62},
  title        = {TiO2 nanoparticles-functionalized two-dimensional WO3 for high-performance supercapacitors developed by facile two-step ALD process},
  url          = {http://dx.doi.org/10.1016/j.mtcomm.2017.06.006},
  volume       = {12},
  year         = {2017},
}

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