材料科学
佩多:嘘
羧甲基纤维素
超级电容器
电容
聚丙烯酰胺
羟乙基纤维素
复合材料
化学工程
功率密度
聚合物
纤维素
高分子化学
电极
功率(物理)
化学
冶金
物理化学
钠
工程类
物理
量子力学
作者
Chen Chen,Yueqin Li,Changhao Qian,Xiaohui Liu,Yong Yang,Han Lin,Qingshan Han
标识
DOI:10.1016/j.eurpolymj.2022.111563
摘要
In this paper, we study the role of carboxymethyl cellulose (CMC) as a template for helping poly(3,4-ethylenedioxythiophene) (PEDOT) uniformly disperse into polyacrylamide (PAAM) hydrogel scaffold. The presence of a large amount of hydrogen bonds and chain entanglements enabled excellent mechanical properties with great stretchability and resilience. With the optimum mass loading of PEDOT (9.75 mg/cm2), a sandwiched configuration of flexible supercapacitor based on the CMC-PEDOT/PAAM hydrogel can deliver the highest specific capacitance of 269 mF/cm2, a maximum energy density of 23.93 μWh/cm2 at a power density of 400 μW/cm2 and remained 16.18 μWh/cm2 at a power density of 3200 μW/cm2, as well as enhanced cycle stability with 88% retention after 5000 cycles. In addition, such device can withstand severely bending and compressing deformations and properly operate at extreme temperatures (−40 ∼ 90 °C) with excellent capacitance property. What’s more, the excellent conductivity of the CMC-PEDOT/PAAM hydrogel contributed to outstanding strain sensing performances. When the supercapacitor was used to power the hydrogel strain sensor, the obtained self-powered sensing system is capable of monitoring physiological signals accurately. The multifunctional performance of the CMC-PEDOT/PAAM hydrogel could be potentially used in flexible electronic devices.
科研通智能强力驱动
Strongly Powered by AbleSci AI