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

서지정보

ㆍ발행기관 : 한국탄소학회 ㆍ수록지정보 : Carbon letters / 33권 / 3호
ㆍ저자명 : Danyun Lei, Xiang‑Dan Li, Min‑Jung Ma, Da‑Young Kim, Jae‑Hyun Noh, Byoung‑Suhk Kim

목차

Salt-activated phenolic resinPAN-derived core-sheath nanostructured carbon nanofiber composites for capacitive energy storage
Abstract
1 Introduction
2 Experimental
2.1 Preparation and stabilization of the PRPAN-based nanofibers
2.2 Salt activation and carbonization of the stabilized PRPAN-based nanofibers
2.3 Characterization
3 Results and discussion
4 Conclusion
Acknowledgements
References

영어 초록

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.

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