MXenes公司
电致变色
异质结
材料科学
纳米技术
电致变色装置
光电子学
电极
图层(电子)
灵活性(工程)
数码产品
纳米复合材料
柔性电子器件
化学
物理化学
统计
数学
作者
Li Ran,Xiaoyuan Ma,Jianmin Li,Jun Cao,Hongze Gao,Tianshu Li,Xiaoyu Zhang,Lichao Wang,Qinghong Zhang,Gang Wang,Chengyi Hou,Yaogang Li,Tomás Palacios,Yuxuan Lin,Hongzhi Wang,Xi Ling
标识
DOI:10.1038/s41467-021-21852-7
摘要
Transition metal oxides (TMOs) are promising electrochromic (EC) materials for applications such as smart windows and displays, yet the challenge still exists to achieve good flexibility, high coloration efficiency and fast response simultaneously. MXenes (e.g. Ti3C2Tx) and their derived TMOs (e.g. 2D TiO2) are good candidates for high-performance and flexible EC devices because of their 2D nature and the possibility of assembling them into loosely networked structures. Here we demonstrate flexible, fast, and high-coloration-efficiency EC devices based on self-assembled 2D TiO2/Ti3C2Tx heterostructures, with the Ti3C2Tx layer as the transparent electrode, and the 2D TiO2 layer as the EC layer. Benefiting from the well-balanced porosity and connectivity of these assembled nanometer-thick heterostructures, they present fast and efficient ion and electron transport, as well as superior mechanical and electrochemical stability. We further demonstrate large-area flexible devices which could potentially be integrated onto curved and flexible surfaces for future ubiquitous electronics. Though two-dimensional (2D) nanocomposite materials have been attractive for flexible electrochromic (EC) devices, achieving both high performance and durability remains a challenge. Here, the authors report high-performance, environmentally stable 2D MXene/transition metal oxide-based EC devices.
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