聚(3,4-亚乙基二氧噻吩)
材料科学
电容
石墨烯
超级电容器
复合数
佩多:嘘
导电聚合物
复合材料
聚合物
电极
纳米技术
化学
物理化学
作者
Wen Chen,Han Xiao,Xufeng Zhou,Xueyan Xu,Shunqiong Jiang,Zhihong Qin,Shiyun Ding,Cancan Bian,Zhaoping Liu
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2022-06-10
卷期号:5 (6): 7277-7286
被引量:11
标识
DOI:10.1021/acsaem.2c00815
摘要
Graphene films have been extensively applied in supercapacitors owing to their high electrical conductivity and good mechanical strength; however, their application in stretchable supercapacitors is still hampered by their low elastic deformation ability. Herein, hybridizing graphene with the hydrogel of a conductive polymer (PEDOT:PSS) endows graphene films with substantially improved ductility. The resultant graphene-conductive polymer hydrogel composite film (GCPH) can be stretched to as long as 114.6% of its original length. Meanwhile, it possesses a much higher specific capacitance (28.52 F g–1) than that of the pure graphene film, as the PEDOT:PSS hydrogel prevents graphene from restacking. A proof-of-concept all-gel-state planar supercapacitor based on GCPH film electrodes is fabricated, which exhibits excellent electrochemical performance under a stretching state. The device shows no significant capacitance decline even when it is stretched to 220% of its original length (20% more than the pre-strain limit), and it maintains 98.23% of its initial capacitance after repeated stretching–releasing cycles.
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