Flexible metallic fabric supercapacitor based on graphene/polyaniline composites. (1st January 2018)

• Record Type: Journal Article
• Authors: Yu, Jianhui; Xie, Feifei; Wu, Zhengchen; Huang, Ting; Wu, Jifeng; Yan, Dandan; Huang, Chaoqiang; Li, Lei
• Is Part Of: Electrochimica acta. Volume 259(2018)
• Page Start: 968
• Page End: 974
• Publication Date: 2018-01-01
• Subjects: Metallic fabric -- Graphene -- Conductive polymer -- Wearable electronics -- Flexible supercapacitor; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2017.11.008
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: Mechanically flexible supercapacitors with fast charge-discharge capacity, high stability and good mechanical properties are essential for powering flexible electronics devices. In this paper, we report a simple process to obtain composite electrode consisting of graphene and polyaniline on stainless steel fabric. The all solid-state flexible supercapacitors based on the composite electrode exhibit a maximal specific capacitance of 1506.6 mF/cm 2, and capacitance retention of 92% after 5000 charge-discharge cycles. Furthermore, the bending test shows that the flexible supercapacitor maintains 95.8% of the original capacitance after 1000 bending cycles. The high capacitive performance and anti-bending property of the supercapacitor are ascribed to the favourable microstructure of graphene/polyaniline composite and high flexibility of stainless steel fabric. Our work demonstrates a novel type of high-performance flexible electrode, which will boost the development of flexible and wearable electronics and integrated fabric power devices. Graphical abstract: Highlights: We report a facile strategy to prepare sandwiched graphene/polyaniline electrodes. The flexible supercapacitor shows large specific capacitance of 1506.6 mF/cm 2 . After 1000 bending cycles, the capacitance of the device remains 95.8%.