Ni掺杂W_(18)O_(49)/ITO-PET电致变色薄膜性能研究  

Study on the Properties of Ni-doping W_(18)O_(49)/ITO-PET Electrochromic Films

作　　者：朱多银 金志浩[1] 岳君容[2] 张建岭[2] 崔彦斌[2] ZHU Duoyin;JIN Zhihao;YUE Junrong;ZHANG Jianling;CUI Yanbin(College of Mechanical and Power Engineering,Shenyang University of Chemical Technology,Shenyang 110142,CHN;State Key Laboratory of Multi-phase Complex System,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,CHN)

机构地区：[1]沈阳化工大学机械与动力工程学院,沈阳110142 [2]中国科学院过程工程研究所多相复杂系统国家重点实验室,北京100190

出　　处：《光电子技术》2021年第4期289-294,314,共7页Optoelectronic Technology

摘　　要：以WCl_(6)和NiCl_(2)·6H_(2)O为钨源和镍源、PVP为表面活性剂、无水乙醇为溶剂,采用溶剂热法制备得到非化学计量比的W_(18)O_(49)和Ni掺杂W_(18)O_(49)纳米线(Ni-W_(18)O_(49)),并利用雾化沉积法将W_(18)O_(49)和Ni-W_(18)O_(49)纳米线喷涂在柔性ITO-PET透明导电基底得到W_(18)O_(49)/ITO-PET和NiW_(18)O_(49)/ITO-PET电致变色薄膜。测试结果表明,Ni掺杂使W_(18)O_(49)/ITO-PET电致变色薄膜着色/褪色响应时间由16.5 s/8.2 s减小为10 s/5.8 s,着色效率由56 cm^(2)·C^(-1)增至74 cm^(2)·C^(-1)。Ni-W_(18)O_(49)/ITO-PET电致变色薄膜经1500次充放电后容量保持率仍为70%。Ni掺杂W_(18)O_(49)使W;和氧空位含量增加,降低电荷转移阻力,从而改善电致变色性能。Non-stoichiometric W_(18)O_(49)nanowires and Ni-doped W_(18)O_(49)nanowires(Ni-W_(18)O_(49))were prepared by solvothermal method using WCl_(6) and NiCl_(2)·6 H_(2)O as tungsten and nickel precursor,PVP as surfactant and anhydrous ethanol as solvent.W_(18)O_(49)and Ni-W_(18)O_(49)nanowires were sprayed on the transparent conductive substrate of ITO-PET by atomization deposition method to obtain W_(18)O_(49)/ITO-PET and Ni-W_(18)O_(49)/ITO-PET electrochromic thin films.The experimental results indicated that the coloring/bleaching response time of W_(18)O_(49)/ITO-PET electrochromic film decreased from16.5 s/8.2 s to 10 s/5.8 s by Ni doping.The coloring efficiency of W_(18)O_(49)/ITO-PET electrochromic films increased from 56 cm^(2)·C^(-1) to 74 cm^(2)·C^(-1) after Ni doping.Ni-W_(18)O_(49)/ITO-PET electrochromic films has a capacity retention of 70%after 1500 charging-discharging cycles.Ni doped W_(18)O_(49)could increase the contents of W;and oxygen vacancy,reduce the charge transferring resistance,and improve the electrochromic performance.

关 键 词：镍掺杂 氧化钨 电致变色薄膜 溶剂热法 柔性基底 

分 类 号：TN389[电子电信—物理电子学] TB331[一般工业技术—材料科学与工程]