A highly nitrogen-doped porous graphene - an anode material for lithium ion batteries

Journal Article


Abstract


  • A novel nitrogen-doped porous graphene material (NPGM) was prepared by freeze-drying a graphene/melamine-formaldehyde hydrogel and subsequent thermal treatment. The use of melamine-formaldehyde resin as a cross-linking agent and nitrogen source enhances the nitrogen content. NPGM possesses a hierarchical porous structure, a large Brunauer-Emmett-Teller surface area (up to 1170 m2 g-1), and a considerable nitrogen content (5.8 at%). NPGM displays a discharge capacity of 672 mA h g-1 at a current density of 100 mA g-1 when used as an anode material for lithium ion batteries, much higher than that observed for a nitrogen-free graphene porous material (450 mA h g-1). The NPGM electrode also possesses superior cycle stability. No capacity loss was observed even after 200 charge/discharge cycles at a current density of 400 mA g-1. The enhanced electrochemical performance is attributed to nitrogen doping, high specific surface area, and the three-dimensional porous network structure.

Authors


  •   Sui, Zhu-Yin (external author)
  •   Wang, Caiyun
  •   Yang, Quan-Sheng (external author)
  •   Shu, Kewei (external author)
  •   Liu, Yu-Wen (external author)
  •   Han, Bao Hang (external author)
  •   Wallace, Gordon G.

Publication Date


  • 2015

Citation


  • Sui, Z., Wang, C., Yang, Q., Shu, K., Liu, Y., Han, B. & Wallace, G. G. (2015). A highly nitrogen-doped porous graphene - an anode material for lithium ion batteries. Journal of Materials Chemistry A, 3 (35), 18229-18237.

Scopus Eid


  • 2-s2.0-84940049661

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1579

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 18229

End Page


  • 18237

Volume


  • 3

Issue


  • 35

Place Of Publication


  • United Kingdom

Abstract


  • A novel nitrogen-doped porous graphene material (NPGM) was prepared by freeze-drying a graphene/melamine-formaldehyde hydrogel and subsequent thermal treatment. The use of melamine-formaldehyde resin as a cross-linking agent and nitrogen source enhances the nitrogen content. NPGM possesses a hierarchical porous structure, a large Brunauer-Emmett-Teller surface area (up to 1170 m2 g-1), and a considerable nitrogen content (5.8 at%). NPGM displays a discharge capacity of 672 mA h g-1 at a current density of 100 mA g-1 when used as an anode material for lithium ion batteries, much higher than that observed for a nitrogen-free graphene porous material (450 mA h g-1). The NPGM electrode also possesses superior cycle stability. No capacity loss was observed even after 200 charge/discharge cycles at a current density of 400 mA g-1. The enhanced electrochemical performance is attributed to nitrogen doping, high specific surface area, and the three-dimensional porous network structure.

Authors


  •   Sui, Zhu-Yin (external author)
  •   Wang, Caiyun
  •   Yang, Quan-Sheng (external author)
  •   Shu, Kewei (external author)
  •   Liu, Yu-Wen (external author)
  •   Han, Bao Hang (external author)
  •   Wallace, Gordon G.

Publication Date


  • 2015

Citation


  • Sui, Z., Wang, C., Yang, Q., Shu, K., Liu, Y., Han, B. & Wallace, G. G. (2015). A highly nitrogen-doped porous graphene - an anode material for lithium ion batteries. Journal of Materials Chemistry A, 3 (35), 18229-18237.

Scopus Eid


  • 2-s2.0-84940049661

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1579

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 18229

End Page


  • 18237

Volume


  • 3

Issue


  • 35

Place Of Publication


  • United Kingdom