Hierarchically activated porous carbon derived from zinc-based fluorine containing metal-organic framework as extremely high specific capacitance and rate performance electrode material for advanced supercapacitors

Sedahmed Osman; Raja Arumugam Senthil; Junqing Pan; Lulu Chai; Yanzhi Sun; Yufeng Wu

doi:10.1016/j.jcis.2021.01.109

Hierarchically activated porous carbon derived from zinc-based fluorine containing metal-organic framework as extremely high specific capacitance and rate performance electrode material for advanced supercapacitors

J Colloid Interface Sci. 2021 Jun:591:9-19. doi: 10.1016/j.jcis.2021.01.109. Epub 2021 Feb 3.

Authors

Sedahmed Osman¹, Raja Arumugam Senthil², Junqing Pan³, Lulu Chai⁴, Yanzhi Sun⁴, Yufeng Wu⁵

Affiliations

¹ State Key Laboratory of Chemical Resources Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China; Department of Chemistry and Life Sciences, College of Science and Technology, Merowe University of Technology, Northern State 43312, Sudan.
² State Key Laboratory of Chemical Resources Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China; Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China.
³ State Key Laboratory of Chemical Resources Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address: jqpan@mail.buct.edu.cn.
⁴ State Key Laboratory of Chemical Resources Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China.
⁵ Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China.

PMID: 33588311
DOI: 10.1016/j.jcis.2021.01.109

Abstract

In this work, a hierarchically activated porous carbon (APC) was synthesized using fluorine-containing metal-organic framework via facile combined carbonization and KOH activation treatments. The influences of activation conditions on the surface structures and electrochemical performance of APC were systematically studied. Afterwards, the electrochemical responses of APC electrode were further assessed from the cyclic voltammetry and galvanostatic charge-discharge examinations by 6 M KOH electrolyte. The as-obtained APC electrode delivered the high specific capacitances of 540.8 and 280 F g^-1 at 1 and 500 A g^-1, correspondingly with superior capacitance retention of 94% after 250,000 cycles even at 100 A g^-1, which is showing that its outstanding capacitance, remarkable rate capacity, and very-long cyclic life. Furthermore, the as-assembled APC-based symmetrical supercapacitor offers a superb energy density of 19 Wh kg^-1 at 182 W kg^-1, indicating its large-scale application. Thus, this work proposes a potential route to synthesize highly efficient porous carbon material for the future development of energy storage systems.

Keywords: Activated porous carbon; High specific capacitance; KOH activation; Metal-organic framework; Supercapacitor.