Zhuang Biying, Zhang Qianqian, Zhou Kailing, Wang Hao
Key Laboratory for New Functional Materials of Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology Beijing 100124 P.R. China
RSC Adv. 2023 Jun 16;13(27):18229-18237. doi: 10.1039/d3ra01701j. eCollection 2023 Jun 15.
The designed growth of titanium dioxide (TiO)/poly(3,4-ethylenedioxythiophene) (PEDOT) nanorod arrays has been achieved by the combination of hydrothermal and electrodeposition methods. Due to the use of one-dimensional (1D) TiO nanorod arrays as the template of the nanocomposites (TiO/PEDOT), the surface area of the active materials is enlarged and the diffusion distance of the ions is shortened. The nanorod structure also contributes to increasing the length of PEDOT conjugated chains and facilitates the transfer of electrons in the conjugated chains. Consequently, the TiO/PEDOT film delivers a shorter response time (∼0.5 s), higher transmittance contrast (∼55.5%) and long-cycle stability compared to the pure PEDOT film. In addition, the TiO/PEDOT electrode is further developed to be a smart bi-functional electrochromic device exhibiting energy storage performance. We expect that this work may lead to new designs for powerful intelligent electrochromic energy storage devices.
通过水热法和电沉积法相结合，实现了二氧化钛（TiO）/聚（3,4-亚乙基二氧噻吩）（PEDOT）纳米棒阵列的定向生长。由于使用一维（1D）TiO纳米棒阵列作为纳米复合材料（TiO/PEDOT）的模板，活性材料的表面积得以增大，离子的扩散距离得以缩短。纳米棒结构也有助于增加PEDOT共轭链的长度，并促进共轭链中电子的转移。因此，与纯PEDOT薄膜相比，TiO/PEDOT薄膜具有更短的响应时间（约0.5秒）、更高的透过率对比度（约55.5%）和长循环稳定性。此外，TiO/PEDOT电极进一步发展成为一种具有能量存储性能的智能双功能电致变色器件。我们期望这项工作能够为强大的智能电致变色储能器件带来新的设计思路。
