材料科学
电致变色
执行机构
假电容
纳米线
纳米技术
电致变色装置
人工肌肉
光电子学
电极
超级电容器
电化学
计算机科学
化学
物理化学
人工智能
作者
Kerui Li,Yuanlong Shao,Hongping Yan,Zhi Lü,Kent J. Griffith,Jinhui Yan,Gang Wang,Hongwei Fan,Jingyu Lu,Wei Huang,Bin Bao,Xuelong Liu,Chengyi Hou,Qinghong Zhang,Yaogang Li,Junsheng Yu,Hongzhi Wang
标识
DOI:10.1038/s41467-018-07241-7
摘要
Materials with synchronous capabilities of color change and actuation have prospects for application in biomimetic dual-stealth camouflage and artificial intelligence. However, color/shape dual-responsive devices involve stimuli that are difficult to control such as gas, light or magnetism, and the devices show poor coordination. Here, a flexible composite film with electrochromic/actuating (238° bending angle) dual-responsive phenomena, excellent reversibility, high synchronization, and fast response speed (< 5 s) utilizes a single active component, W18O49 nanowires. From in situ synchrotron X-ray diffraction, first principles calculations/numerical simulations, and a series of control experiments, the actuating mechanism for macroscopic deformation is elucidated as pseudocapacitance-based reversible lattice contraction/recovery of W18O49 nanowires (i.e. nanostructure change at the atomic level) during lithium ion intercalation/de-intercalation. In addition, we demonstrate the W18O49 nanowires in a solid-state ionic polymer-metal composite actuator that operates stably in air with a significant pseudocapacitive actuation.
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