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Salt-activated phenolic resin/PAN-derived core-sheath nanostructured carbon nanofiber composites for capacitive energy storage

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2023, 33(3), pp.699-711
  • DOI : 10.1007/s42823-022-00451-6
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : October 14, 2022
  • Accepted : December 20, 2022
  • Published : May 1, 2023

Lei Danyun 1 Li Xiang-Dan 2 Ma Min-Jung 3 Kim Da-Young 3 Noh Jae-Hyun 3 Kim Byoung-Suhk 3

1College of Urban Construction, Wuchang Shouyi University
2Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities
3Jeonbuk National University

Accredited

ABSTRACT

In this study, we have fabricated the phenolic resin (PR)/polyacrylonitrile (PAN) blend-derived core-sheath nanostructured carbon nanofibers (CNFs) via one-pot solution electrospinning. The obtained core-sheath nanostructured carbon nanofibers were further treated by mixed salt activation process to develop the activated porous CNFs (CNF-A). Compared to pure PAN-based CNFs, the activated PR/PAN blend with PR 20% (CNF28-A)-derived core-sheath nanostructured CNFs showed enhanced specific capacitance of ~ 223 F g−1 under a three-electrode configuration. Besides, the assembled symmetric CNF28-A//CNF28-A device possessed a specific capacitance of 76.7 F g−1 at a current density of 1 A g−1 and exhibited good stability of 111% after 5,000 galvanostatic charge/discharge (GCD) cycles, which verifies the outstanding long-term cycle stability of the device. Moreover, the fabricated supercapacitor device delivered an energy density of 8.63 Wh kg−1 at a power density of 450 W kg−1.

Citation status

* References for papers published after 2022 are currently being built.