Boron-Induced Nitrogen Fixation in 3D Carbon Materials for Supercapacitors

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Peng Sun
  • Jian Huang
  • Feng Xu
  • Tianquan Lin
  • Wei Zhao
  • Wujie Dong
  • Fuqiang Huang

Detail(s)

Original languageEnglish
Pages (from-to)28075-28082
Journal / PublicationACS Applied Materials and Interfaces
Volume12
Issue number25
Online published26 May 2020
Publication statusPublished - 24 Jun 2020
Externally publishedYes

Abstract

Nitrogen-rich carbon materials attract great attention because of their admirable performance in energy storage and electrocatalysis. However, their conductivity and nitrogen content are somehow contradictory because good conductivity requires high-temperature heat treatment, which decomposes most of the nitrogen species. Herein, we propose a facile method to solve this problem by introducing boron (B) to fix the nitrogen in a three-dimensional (3D) carbon material even at 1000 °C. Besides, this N-rich carbon material has a high content of pyrrolic nitrogen due to the selective stabilization of B, which is favorable in electrochemical reactions. Density functional theory (DFT) investigation demonstrates that B reduces the energy level of neighboring N species (especially pyrrolic nitrogen) in the graphene layer, making it difficult to escape. Thus, this carbon material simultaneously, achieves high conductivity (30 S cm-1) and nitrogen content (7.80 atom %), thus showing an outstanding capacitance of 412 F g-1 and excellent rate capability. Copyright © 2020 American Chemical Society.

Research Area(s)

  • carbon materials, cycling stability, first-principles calculation, nitrogen fixation, supercapacitor

Citation Format(s)

Boron-Induced Nitrogen Fixation in 3D Carbon Materials for Supercapacitors. / Sun, Peng; Huang, Jian; Xu, Feng et al.
In: ACS Applied Materials and Interfaces, Vol. 12, No. 25, 24.06.2020, p. 28075-28082.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review