Yu Zhixuan, Wang Rui, Tang Huayu, Zheng Ding, Yu Junsheng
State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China.
Polymers (Basel). 2024 Aug 15;16(16):2313. doi: 10.3390/polym16162313.
An integrated visual energy system consisting of conjugated polymer electrodes is promising for combining electrochromism with energy storage. In this work, we obtained copolymer bifunctional electrodes poly(3,6-dimethoxythieno[3,2-b]thiophene--2,3-dihydrothieno[3,4-b][1,4]dioxin-3-ylmethanol)(P(TT-OMe--EDTM)) by one-step electrochemical copolymerization, which exhibits favorable electrochromic and capacitive energy storage properties. Because of the synergistic effect of PTT-OMe and PEDTM, the prepared copolymers show better flexibility. Moreover, the morphology and electrochemical properties of the copolymers could be adjusted by depositing different molar ratios of 3,6-dimethoxythieno[3,2-b]thiophene (TT-OMe) and 2,3-dihydrothieno[3,4-b][1,4] dioxin-3-ylmethanol (EDTM). The P(TT-OMe--EDTM) electrodes realized a high specific capacitance (190 F/g at 5 mV/s) and recognizable color conversion. This work provides a novel and simple way to synergistically improve electrochromic and energy storage properties and develop thiophene-based conducting polymers for electrochromic energy storage devices.
一种由共轭聚合物电极组成的集成视觉能量系统有望将电致变色与能量存储结合起来。在这项工作中，我们通过一步电化学共聚获得了共聚物双功能电极聚（3,6 - 二甲氧基噻吩并[3,2 - b]噻吩 - 2,3 - 二氢噻吩并[3,4 - b][1,4]二恶英 - 3 - 基甲醇）（P(TT - OMe - EDTM)），该电极具有良好的电致变色和电容性储能特性。由于PTT - OMe和PEDTM的协同效应，制备的共聚物表现出更好的柔韧性。此外，通过沉积不同摩尔比的3,6 - 二甲氧基噻吩并[3,2 - b]噻吩（TT - OMe）和2,3 - 二氢噻吩并[3,4 - b][1,4]二恶英 - 3 - 基甲醇（EDTM），可以调节共聚物的形态和电化学性能。P(TT - OMe - EDTM)电极实现了高比电容（5 mV/s时为190 F/g）和可识别的颜色转换。这项工作提供了一种新颖且简单的方法来协同改善电致变色和储能性能，并开发用于电致变色储能器件的噻吩基导电聚合物。
