Bi-functional Mo-doped WO₃ nanowire array electrochromism-plus electrochemical energy storage

详细信息    查看全文

• 作者：D. Zhou^a ; F. Shi^a ; D. Xie^a ; D.H. Wang^a ; X.H. Xia^a ; ^b ; X.L. Wang^a ; ^b ; C.D. Gu^a ; ^b ; J.P. Tu^a ; ^b ; ^{tujp@zju.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; ^{tujplab@zju.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Tungsten trioxide ; Nanowire ; Doping ; Electrochromism ; Electrochemical energy storage
• 刊名：Journal of Colloid and Interface Science
• 出版年：2016
• 出版时间：1 March 2016
• 年：2016
• 卷：465
• 期：Complete
• 页码：112-120
• 全文大小：1654 K

文摘

Metal-doping is considered to be an effective way for construction of advanced semiconducting metal oxides with tailored physicochemical properties. Herein, Mo-doped WO₃ nanowire arrays are rationally fabricated by a sulfate-assisted hydrothermal method. Compared to the pure WO₃, the optimized Mo-doped WO₃ nanowire arrays exhibit improved electrochromic properties with fast switching speed (3.2 s and 2.6 s for coloration and bleaching, respectively), significant optical modulation (56.7% at 750 nm, 83.0% at 1600 nm and 48.5% at 10 μm), high coloration efficiency (123.5 cm² C⁻¹) and excellent cycling stability. In addition, as a proof of concept, the Mo-doped WO₃ nanowire arrays are demonstrated with electrochemical energy storage monitored by the electrochromism. This electrode design protocol can provide an alternative way for developing high-performance active materials for bi-functional electrochromic batteries.