Nitrogen-Deficient Graphitic Carbon Nitride with Enhanced Performance for Lithium Ion Battery Anodes

Jingjing Chen, Zhiyong Mao, Lexi Zhang, Dajian Wang, Ran Xu, Lijian Bie, Bradley D. Fahlman

Research output: Contribution to journalArticlepeer-review

230 Scopus citations

Abstract

Graphitic carbon nitride (g-C3N4) behaving as a layered feature with graphite was indexed as a high-content nitrogen-doping carbon material, attracting increasing attention for application in energy storage devices. However, poor conductivity and resulting serious irreversible capacity loss were pronounced for g-C3N4 material due to its high nitrogen content. In this work, magnesiothermic denitriding technology is demonstrated to reduce the nitrogen content of g-C3N4 (especially graphitic nitrogen) for enhanced lithium storage properties as lithium ion battery anodes. The obtained nitrogen-deficient g-C3N4 (ND-g-C3N4) exhibits a thinner and more porous structure composed of an abundance of relatively low nitrogen doping wrinkled graphene nanosheets. A highly reversible lithium storage capacity of 2753 mAh/g was obtained after the 300th cycle with an enhanced cycling stability and rate capability. The presented nitrogen-deficient g-C3N4 with outstanding electrochemical performances may unambiguously promote the application of g-C3N4 materials in energy-storage devices.

Original languageEnglish
Pages (from-to)12650-12657
Number of pages8
JournalACS Nano
Volume11
Issue number12
DOIs
StatePublished - Dec 26 2017

Keywords

  • graphitic carbon nitride
  • lithium ion battery
  • magnesiothermic denitriding
  • nitrogen deficiency
  • nitrogen-doped carbon

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