基于钛酸钡/聚噻吩的电致变色超级电容器电极

电致变色功能引入超级电容器时可以通过颜色变化防止其过度充电。通过化学氧化聚合成功制备了一种基于钛酸钡和聚噻吩（PEDOT）的电致变色超级电容器电极材料。该电极材料显示出核壳纳米结构，具有115.3 F/g的高电容值，并且在1 500次循环后能保留93.0%。此外，由于PEDOT自身的电致变色特性，得到的复合电极在充放电过程中会发生颜色的变化，充放电前后具有52.9%的光学调制，进而以可观测的方式直观展示当前能量存储水平。

Electrochromic Supercapacitor Electrode Based on Barium Titanate/Polythiophene

Electrochromic functionality is introduced into supercapacitors to preventing them from overcharging. A high-performance electrochromic supercapacitor electrode material based on barium titanate (BT) and polythiophene (PEDOT) was successfully prepared by chemical oxidation polymerization. The electrode material shows core-shell nanostructures and a high capacitance value of 115.3 F/g, and can retain 93.0% of the initial capacitance value after 1 500 cycles. In addition, due to the electrochromic characteristics of PEDOT, the prepared composite electrode will undergo color changes during the charging and discharging process and has an optical modulation of 52.9% before and after being fully charged and discharged, thus enabling electrochromic energy storage. This electrochromic supercapacitor electrode directly displays the current energy storage level in an observable way.