Highly Crosslinked Conductive Polymer Nanofibrous Films for High-Rate Solid-State Supercapacitors and Electromagnetic Interference Shielding

Haoran Lai, Congrui Bai, Yaqin Wang, Zhaoyang Fan, Ye Yuan, Huan Jiao

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

With their low cost and unique physicochemical properties, conductive polymer- based film electrodes drew much attention in flexible electronic devices. However, their poor intrinsic conductivities limit their applications in high-rate supercapacitors or high electromagnetic interference (EMI) shielding performance. It is meaningful to deal with the issue through the rational design of the film nanostructure. Herein, using specially treated PEDOT:PSS coated polyacrylonitrile (PAN) nanofibrous films (PPNFs) as a current collector, polyaniline (PANI) or polypyrrole (PPy) based highly crosslinked conductive nanofibrous films (HCC-NFs), named as PANI@PPNF and PPy@PPNF, are fabricated. The PANI@PPNF electrodes exhibit a specific capacitance of 156 mF cm–2 at a current density of 1 mA cm–2. Meanwhile, 41% capacity (64 mF cm–2) remained even at 20 mA cm–2. The remarkable rate performance of PANI@PPNFs demonstrates the HCC-NF structure brings a high-rate character for pseudocapacitive material. Furthermore, the solid-state supercapacitor shows long-term cycle stability at a high scan rate of 1 V s–1 for 5 000 cycles and over 75% of the specific capacitance is retained, suggesting excellent cycle stability of PANI@PPNF. Besides, PANI or PPy based HCC-NFs show high performance in EMI shielding. This conductive polymer-based HCC-NF structure offers a promising platform for designing multi-functional flexible electronic devices.

Original languageEnglish (US)
Article number2102115
JournalAdvanced Materials Interfaces
Volume9
Issue number9
DOIs
StatePublished - Mar 22 2022

Keywords

  • conductive polymer
  • crosslink
  • electromagnetic interference shielding
  • high-rate supercapacitor

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

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