超级电容器
材料科学
电容
电解质
电极
化学工程
储能
聚合物
电化学
功率密度
复合材料
化学
功率(物理)
物理
物理化学
量子力学
工程类
作者
Shi-fang Ye,Ke-Hu Zhu,Weigang Ma,Li-yang Dou,Pei-xin Cui,Heng Sha,Xiaodong Han,Zi-Chun Fan,Xueyu Tao
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:2022-07-01
卷期号:169 (7): 073501-073501
被引量:1
标识
DOI:10.1149/1945-7111/ac7ade
摘要
With the rapid development of the wearable devices and flexible supercapacitors (FSCs), urgent demand for electrodes with high specific capacitance and excellent flexibility have been put forward. Herein, a self-standing conducting polymer hydrogel electrode has been successfully synthesized by in situ polymerization of aniline (ANI) in aqueous solution of polyvinyl alcohol (PVA), phytic acid (PA) and sodium chloride (NaCl). The prepared PANI/PVA/NaCl (PPN) hydrogel electrode shows high specific capacitance (1544 mF cm −2 at current density of 1 mA cm −2 ), good flexibility (elongation at fracture of 110%), satisfactory electrochemical stability (92% capacitance retention after 500 repeated bending cycles) and excellent cycling stability (78.2% capacitance retention after 10000 cycles) due to the uniform 3D interconnected structure driven by NaCl pseudo template. In order to further explore the potential application prospects of the synthesized hydrogel in flexible devices, a series of all-hydrogel-state FSCs are assembled based on the prepared PPN hydrogel electrodes and typical PVA/H 2 SO 4 electrolyte. The assembled FSCs exhibit high energy density of 51.1 μ Wh cm −2 at power density of 250 μ W cm −2 and long-life stability of 81.10% capacitance retention after 10000 charge/discharge cycles. This work provides a new synthesis strategy for the high performance energy storage electrodes and devices.
科研通智能强力驱动
Strongly Powered by AbleSci AI