Bifunctional urchin-like WO3@PANI electrodes for superior electrochromic behavior and lithium-ion battery
- 36 Downloads
A improved bifunctional nanostructure composite was designed and fabricated as reversible electrodes for electrochromic film and lithium-ion battery. This unique optic-electro responsive urchin-like architecture assembled from WO3@PANI nanobelts were prepared by solvothermal and electropolymerization methods. As expected, the composite exhibits the superior optical-electrochemical performances. The composite owns quick switching time ranging from purple, green, yellow, gray to blue via voltage regulation, better rate performance and long-term cycling stability in the galvanostatic charge/discharge process. Benefited from stable structure and short diffusion path, it also demonstrates a distinct optical modulation (△T = 45%) and excellent durability after long-term cycles (1200 cycles). The as-prepared electrode exhibits outstanding cycling stability (capacity retention of 516 mAh g−1 after 1200 cycles with a low average fading capacity of ca. 0.103 mAh g−1 and fading cyclic rate of ca. 0.02% per cycle). The long-term stability studies reveal that urchin-like composite has much more excellent optical and electrochemical durability. The morphology and structure of the composite were carried out by characterization equipment. This effective synthesis strategy will have profound implications for developing the other inorganic–organic nanocomposites in optical and electrochemical field.
We thank National Natural Science Foundation of China (Nos. 51572058, 51502057), National Key Rerch & Development Program (2016YFB0303903, 2016YFE0201600), the International Science & Technology Cooperation Program of China (2013DFR10630, 2015DFE52770), and Foundation of Equipment Development (6220914010901).
- 1.S. Hoseinzadeh, R. Ghasemiasl, A. Bahari, A.H. Ramezani, n-Type WO3 semiconductor as a cathode electrochromic material for ECD devices. J. Mater. Sci.: Mater. Electron. 28, 14446–14452 (2017)Google Scholar
- 12.S. Mohammed Harshulkhan, K. Janaki, G. Velraj, R. Sakthi Ganapathy, S. Krishnaraj, Structural and optical properties of Ag doped tungsten oxide (WO3) by microwave-assisted chemical route. J. Mater. Sci.: Mater. Electron. 27, 3158–3163 (2016)Google Scholar
- 25.X.C. Fang, M.D. Yao, L.Y. Guo, Y.P. Xu, W.W. Zhou, M.P. Zhuo, C. Shi, L.Y. Liu, L.Z. Wang, X.F. Li, W.F. Chen, One-step, solventless, and scalable mechanosynthesis of WO3·2H2O ultrathin narrow nanosheets with superior UV–Vis-light-driven photocatalytic activity. ACS Sustain. Chem. Eng. 5, 10735–10743 (2017)CrossRefGoogle Scholar
- 39.S.W. Cai, H.L. Wen, S.Z. Wang, H.J. Niu, C. Wang, X.K. Jiang, X.D. Bai, W. Wang, Electrochromic polymers electrochemically polymerized from 2, 5-dithienylpyrrole (DTP) with different triarylamine units: synthesis, characterization and optoelectrochemical properties. Electrochim. Acta 228, 332–342 (2017)CrossRefGoogle Scholar