Journal
CELLULOSE
Volume 29, Issue 4, Pages 2525-2537Publisher
SPRINGER
DOI: 10.1007/s10570-022-04454-4
Keywords
Polypyrrole; Silver nanoparticles; Cotton fabric; Flexible supercapacitor; UV-induced polymerization
Funding
- National Natural Science Foundation of China [51763008]
- Natural Science Foundation of Guangxi Province [2019GXNSFAA245028, 2018GXNSFAA281241]
- Opening Project of Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization [HZXYKFKT201909]
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By fixing graphene oxide and polypyrrole/silver nanoparticles on cotton fabric, researchers have developed flexible electrodes for fabric-based supercapacitors. These electrodes, combining three active materials, exhibit good electrochemical performance, which is significant for flexible fabric-based supercapacitors.
Cotton fabric (CF) fabricated by natural cellulose fibers has porous structure, abundant hydrophilic hydroxyl groups and good mechanical flexibility, which is a promising substrate for flexible fabric-based supercapacitors. Graphene oxide (GO) nanosheets were fixed on the CF by vacuum filtration, and then the pyrrole monomers and silver ions (Ag+) were adsorbed to the surface of GO/CF by pi-pi and electrostatic interactions, respectively. Polypyrrole/silver (PPy/Ag) nanoparticles were generated on the surface of GO/CF via in situ UV-induced polymerization, forming the flexible PPy/Ag/GO/CF electrodes. The electrodes combine three active materials (PPy, Ag and GO), which show good electrochemical performance. The electrode prepared under optimum conditions (UV irradiation time: 120 min; mass loading of GO on the CF: 3 mg cm(-2)) exhibits a high specific capacitance of 1664.0 mF cm(-2). The flexible symmetric quasi-solid-state fabric-based supercapacitor (QFSC) based on the optimum electrode also keeps superior electrochemical performance and excellent mechanical flexibility, which has a great application prospect for wearable energy storage devices.
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