High specific capacitance cotton fiber electrode enhanced with PPy and MXene by in situ hybrid polymerization

Fiber electrodes are the main functional elements of flexible and textile-based storage devices. This study proposes a Polypyrrole (PPy) and MXene composite, grown on cotton fiber, as a high capacitance electrode. Pyrrole (Py) and MXene are processed and deposited along with an in-situ polymerization. The mass and areal capacitance of the assembled (PPy/MXene)@Cotton electrode respectively reach to 506.6 F g(-1), at current density of 1 Ag-1 and 455.9 mF cm(-2) al scan rate of 0.9 mA cm(-2). These values outperform the PPy@Cot ton fiber electrode, around 45.8% and 119% respectively. As-prepared fiber electrodes with mechanical strength of 107.3 MPa and conductivity of 60.8 S/m, offer intriguing application prospects in the field of weaving and flexible fibrous supercapacitors. (C) 2021 Published by Elsevier B.V.

Automated summary

A Polypyrrole (PPy) and MXene composite grown on cotton fiber is proposed as a high capacitance electrode, outperforming traditional PPy@Cotton fiber electrodes. The assembled electrode shows high mass and areal capacitance, along with excellent mechanical strength and conductivity, offering promising application prospects in weaving and flexible fibrous supercapacitors.