Cobalt-doped porous carbon nanosheets derived from 2D hypercrosslinked polymer with CoN4 for high performance electrochemical capacitors

Yuanhai Chen, Fengru Liu, Feng Qiu*, Chenbao Lu, Jialing Kang, Doudou Zhao, Sheng Han, Xiaodong Zhuang

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

9 Citations (Scopus)
286 Downloads (Pure)

Abstract

Cobalt-doped graphene-coupled hypercrosslinked polymers (Co-GHCP) have been successfully prepared on a large scale, using an efficient RAFT (Reversible Addition-Fragmentation Chain Transfer Polymerization) emulsion polymerization and nucleophilic substitution reaction with Co (II) porphyrin. The Co-GHCP could be transformed into cobalt-doped porous carbon nanosheets (Co-GPC) through direct pyrolysis treatment. Such a Co-GPC possesses a typical 2D morphology with a high specific surface area of 257.8 m2 g-1. These intriguing properties of transition metal-doping, high conductivity, and porous structure endow the Co-GPC with great potential applications in energy storage and conversion. Utilized as an electrode material in a supercapacitor, the Co-GPC exhibited a high electrochemical capacitance of 455 F g-1 at a specific current of 0.5 A g-1. After 2000 charge/discharge cycles, at a current density of 1 A g-1, the specific capacitance increased by almost 6.45%, indicating the excellent capacitance and durability of Co-GPC. These results demonstrated that incorporation of metal porphyrin into the framework of a hypercrosslinked polymer is a facile strategy to prepare transition metal-doped porous carbon for energy storage applications.

Original languageEnglish
Article number1339
Number of pages13
JournalPolymers
Volume10
Issue number12
Early online date4 Dec 2018
DOIs
Publication statusPublished - Dec 2018

Keywords

  • Hypercrosslinked polymer
  • Porous carbon
  • Supercapacitor
  • Transition metal-doping
  • Two-dimensional nanosheet

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