The solvothermal method was used to synthesize monoclinal tungsten oxide W18O49 nanorods,and the morphology was able to be precisely controlled by changing the mass concentration of the tungsten hexachloride (WCl6).X-ray diffraction,transmission electron microscope and field emission scanning electron microscope were applied to characterized the structure and phase.The results showed that W18O49 nanorods exhibited excellent electrochromic properties when the concentration of WCl6 was 0.3mg/mL.The optical modulation range exceeded 34.3% at 750nm while the driving voltage was ±2.1V on the electrochromic devices (ECDs),and revealed satisfactory cycle stability.The excellent performance of ECDs can be attributed to the formation of oxygen defects and precisely control of material morphology.
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基金资助
中国博士后科学基金(2017M612063)
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