双功能钼掺杂三氧化钨纳米线阵列的电致变色与电化学储能
Bi-functional Mo-doped WO3 nanowire array electrochromism-plus electrochemical energy storage.
作者信息
Zhou D, Shi F, Xie D, Wang D H, Xia X H, Wang X L, Gu C D, Tu J P
机构信息
State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China; Cyrus Tang Center for Sensor Materials and Applications, Zhejiang University, Hangzhou 310027, China.
出版信息
J Colloid Interface Sci. 2016 Mar 1;465:112-20. doi: 10.1016/j.jcis.2015.11.068. Epub 2015 Nov 27.
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 (3.2s and 2.6s for coloration and bleaching, respectively), significant optical modulation (56.7% at 750nm, 83.0% at 1600nm and 48.5% at 10μm), high coloration efficiency (123.5cm(2)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.
金属掺杂被认为是构建具有定制物理化学性质的先进半导体金属氧化物的有效方法。在此，通过硫酸盐辅助水热法合理制备了Mo掺杂的WO3纳米线阵列。与纯WO3相比，优化后的Mo掺杂WO3纳米线阵列表现出改善的电致变色性能，具有快速的切换速度（着色和漂白分别为3.2秒和2.6秒）、显著的光学调制（750nm处为56.7%，1600nm处为83.0%，10μm处为48.5%）、高着色效率（123.5cm²C⁻¹）和优异的循环稳定性。此外，作为概念验证，通过电致变色监测了Mo掺杂WO3纳米线阵列的电化学储能。这种电极设计方案可为开发用于双功能电致变色电池的高性能活性材料提供一种替代方法。
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