基于氧化钨和普鲁士蓝的可变色超级电容器

doi:10.19799/j.cnki.2095-4239.2021.0106

储能科学与技术 ›› 2021, Vol. 10 ›› Issue (3): 952-957.doi: 10.19799/j.cnki.2095-4239.2021.0106

• 固态离子学与储能专刊 • 上一篇下一篇

基于氧化钨和普鲁士蓝的可变色超级电容器

毕志杰(), 赵宁, 郭向欣()

青岛大学物理科学学院，山东青岛 266071

收稿日期:2021-03-16 修回日期:2021-03-26 出版日期:2021-05-05 发布日期:2021-04-30
通讯作者: 郭向欣 E-mail:bizhijie@qdu.edu.cn;xxguo@qdu.edu.cn
作者简介:毕志杰（1991—），男，博士研究生，讲师，研究方向为电致变色器件及固态二次电池，E-mail：bizhijie@qdu.edu.cn；
基金资助:
国家自然科学基金项目(22005163);山东省“泰山学者”基金，山东省固态电池工程实验室

Electrochromic-supercapacitors based on tungsten oxide and prussian blue

Zhijie BI(), Ning ZHAO, Xiangxin GUO()

College of Physics, Qingdao University, Qingdao 266071, Shandong, China

Received:2021-03-16 Revised:2021-03-26 Online:2021-05-05 Published:2021-04-30
Contact: Xiangxin GUO E-mail:bizhijie@qdu.edu.cn;xxguo@qdu.edu.cn

摘要/Abstract

摘要：

氧化钨(WO₃)薄膜作为阴极电致变色材料，还原态(阳离子嵌入)时着色而氧化态(阳离子脱出)时褪色；而普鲁士蓝(Prussian blue，PB)薄膜作为阳极电致变色材料，还原态(阳离子嵌入)时褪色而氧化态(阳离子脱出)时着色。利用不同离子存储状态下WO₃和PB薄膜的变色互补性，构筑了基于WO₃和PB薄膜的可变色超级电容器。利用脉冲激光沉积法和电沉积法在透明导电玻璃表面制备了WO₃/PB复合薄膜，并以该复合薄膜为电极，构筑了对称型可变色超级电容器。结果表明，WO₃/PB复合薄膜具有优异的循环稳定性，循环200圈后，面电容量的保持率可达83.8%；在650 nm时，由于WO₃和PB薄膜在不同电压下的协同变色，超级电容器的光透过率差在完全着色与褪色时为53.2%。该超级电容器在不同充、放电状态下可清晰地显示不同的颜色组合及光对比度，从而实现利用颜色变化指示超级电容器的能量存储状态。本研究有助于推动电致变色和能量存储领域的交叉融合，为超级电容器能量存储状态的可视化提供实验依据。

关键词: 电致变色, 超级电容器, 氧化钨, 普鲁士蓝, 双功能

Abstract:

The WO₃ is a typical cathodic electrochromic material, which colors in the reduction (cation intercalation) state and fades in the oxidation (cation deintercalation) state. However, Prussian blue (PB) is a typical anodic electrochromic material, which colors in the oxidation (cation de-intercalation) state and fades in the reduction (cation intercalation) state. The electrochromic-supercapacitor was constructed based on the WO₃ and PB films due to the matched color changes for WO₃ and PB films under different ion-storage states. The WO₃ and PB composite films were prepared on the surface of transparent conductive glasses using the pulsed laser deposition and electro-deposition methods. The symmetric electrochromic-supercapacitor was fabricated using WO₃ and PB composite films as electrodes. The results showed that the WO₃/PB composite film presents superior cycling stability with the areal capacitance retention of 83.8% after 200 cycles. In addition, the supercapacitor presents an optical contrast of 53.2% between the total coloring and bleaching states at 650 nm, which is ascribed to the synergetic color changes for WO₃ and PB films under different voltages. Such supercapacitor exhibits different color changes under different charge-discharge states; thus, realizing the indication of energy-storage states through color changes. Our work pushes the combination of electrochromism and energy storage, leading to the visualization of energy-storage states for supercapacitors.

Key words: electrochromic, supercapacitor, tungsten oxide, Prussian blue, bi-functional

中图分类号:

TQ 152

毕志杰, 赵宁, 郭向欣. 基于氧化钨和普鲁士蓝的可变色超级电容器[J]. 储能科学与技术, 2021, 10(3): 952-957.

Zhijie BI, Ning ZHAO, Xiangxin GUO. Electrochromic-supercapacitors based on tungsten oxide and prussian blue[J]. Energy Storage Science and Technology, 2021, 10(3): 952-957.

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基于氧化钨和普鲁士蓝的可变色超级电容器

Electrochromic-supercapacitors based on tungsten oxide and prussian blue

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