Binary doping of nitrogen and phosphorus into porous carbon: A novel di-functional material for enhancing CO2 capture and super-capacitance

Yuan Wang, Jianfei Xiao, Hanzhi Wang, Tian C. Zhang, Shaojun Yuan

Research output: Contribution to journalArticlepeer-review

Abstract

Designing of hetero-atomic doped carbon-based systems through pyrolysis of abundant element organic precursors is a novel approach to construct rational porous carbon materials. Herein, a highly-cross-linked triazine polymer is employed to fabricate N, P co-doped porous carbon (A-TDP-12) with tunable active nitrogen in the carbon framework for simultaneous enhancement of CO2 capture capability and Supercapacitance (SC). The synthesized A-TDP-12 possesses a typical hierarchically porous framework (micro-pores and meso-pores) with a large surface area (1332 m2 g−1) and a rich content of N (7.89 atomic %) and P (0.74 atomic %). It delivers a CO2 adsorption capacity of 1.52 and 5.68 mmol g−1 at 1 and 5 bar, respectively, with almost no decay after successive 8 recycles. In 6 M KOH aqueous electrolyte, A-TDP-12 exhibits a superior specific capacitance of 172.7 F g−1 at a current density of 1 A g−1. Even at a high current density of 10 A g−1, 80% of its initial capacity still remains. This work not only offers a novel strategy for fabricating promising adsorbents and electrodes for CO2 uptake and SCs, but also provides new insights into design of porous carbon material for related applications.

Original languageEnglish (US)
Pages (from-to)73-81
Number of pages9
JournalJournal of Materials Science and Technology
Volume99
DOIs
StatePublished - Feb 10 2022

Keywords

  • Bi-function
  • CO capture
  • N,P co-doping
  • Porous carbon
  • Super-capacitors

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Polymers and Plastics
  • Metals and Alloys
  • Materials Chemistry

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