当前位置：
X-MOL 学术
›
J. Alloys Compd.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
A polypyrrole/graphene nanoscroll 3D conductive interpenetrating heterostructure for high-performance fabric-based supercapacitors
Journal of Alloys and Compounds ( IF 5.8 ) Pub Date : 2024-12-19 , DOI: 10.1016/j.jallcom.2024.178159 Qingwei Huang, Junyan Li, Leilin Zhuo, Yudong Chen, Xiaohong Liu, Wangchuan Xiao, Hong Chen, Meijuan Lin, Qidan Ling
Journal of Alloys and Compounds ( IF 5.8 ) Pub Date : 2024-12-19 , DOI: 10.1016/j.jallcom.2024.178159 Qingwei Huang, Junyan Li, Leilin Zhuo, Yudong Chen, Xiaohong Liu, Wangchuan Xiao, Hong Chen, Meijuan Lin, Qidan Ling
|
Polypyrrole (PPy) is acknowledged as a suitable material for flexible supercapacitors due to its outstanding electrical conductivity, flexibility, and pseudocapacitance. Nevertheless, similar to other conductive polymers, PPy is prone to structural collapse during charge-discharge cycles, detrimentally impacting its cycling stability. To address this issue, a novel 3D conductive interpenetrating heterostructure comprising PPy and Graphene nanoscroll (GNS) was developed and anchored onto a poly(3,4-ethylene dioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)-modified cotton fabric via a one-step in-situ polymerization. The 1D interconnected network of GNS serves as an effective conductive framework, optimizing electron mobility, creating additional active sites, and alleviating the volumetric changes in PPy chains during the electrochemical cycling process. Benefiting from effective charge transport and electrolyte diffusion channels, abundant active sites, and mechanical stability, the resulting GNS/PPy/PEDOT:PSS/Cotton composite (GPPC) electrode showcased an impressive areal specific capacitance of 4217 mF·cm-2 (1 mA·cm-2), while sustaining 94.8% capacitance retention after 7000 charge-discharge processes. The assembled symmetrical flexible supercapacitors (GPPC-SFSC) achieved a high energy density of 274.5 μWh·cm-2 at a power density of 460 μW·cm-2. Moreover, the GPPC-SFSC maintained 90.3% of initial capacitance after 1000 bending cycles to 180° and 100% and 71.4% of initial capacitance after 1000 cycles under bending of 45° and 180°, respectively, affirming its high utility in various flexible electronic systems.
更新日期：2024-12-20
京公网安备 11010802027423号