Highly Flexible, Freestanding Supercapacitor Electrode with Enhanced Performance Obtained by Hybridizing Polypyrrole Chains with MXene
City University of Hong Kong · Ningbo Institute of Industrial Technology · +1 more institution
Abstract
Though polypyrrole (PPy) is widely used in flexible supercapacitors owing to its high electrochemical activity and intrinsic flexibility, limited capacitance and cycling stability of freestanding PPy films greatly reduce their practicality in real‐world applications. Herein, we report a new approach to enhance PPy's capacitance and cycling stability by forming a freestanding and conductive hybrid film through intercalating PPy into layered Ti 3 C 2 (l‐Ti 3 C 2 , a MXene material). The capacitance increases from 150 (300) to 203 mF cm −2 (406 F cm −3 ). Moreover, almost 100% capacitance retention is achieved, even after 20 000 charging/discharging cycles. The analyses reveal that l‐Ti 3 C 2 effectively prevents…
Citation impact
- FWCI
- 34.20
- Percentile
- 100%
- References
- 53
Authors
11Topics & keywords
- Materials science
- Supercapacitor
- Polypyrrole
- Capacitance
- Electrode
- Conductive polymer
- Electrochemistry
- Electrolyte