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In-plane graphene/boron-nitride heterostructures as an efficient metal-free electrocatalyst for the oxygen reduction reaction

Journal Article


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Abstract


  • Exploiting metal-free catalysts for the oxygen reduction reaction (ORR) and understanding their catalytic mechanisms are vital for the development of fuel cells (FCs). Our study has demonstrated that in-plane heterostructures of graphene and boron nitride (G/BN) can serve as an efficient metal-free catalyst for the ORR, in which the C-N interfaces of G/BN heterostructures act as reactive sites. The formation of water at the heterointerface is both energetically and kinetically favorable via a four-electron pathway. Moreover, the water formed can be easily released from the heterointerface, and the catalytically active sites can be regenerated for the next cycle. Since G/BN heterostructures with controlled domain sizes have been successfully synthesized in recent reports (e.g. Nat. Nanotechnol., 2013, 8, 119), our results highlight the great potential of such heterostructures as a promising metal-free catalyst for the ORR in FCs.

UOW Authors


  •   Sun, Qiao (external author)
  •   Sun, Caixia (external author)
  •   Du, Aijun (external author)
  •   Dou, Shi Xue
  •   Li, Zhen

Publication Date


  • 2016

Citation


  • Sun, Q., Sun, C., Du, A., Dou, S. Xue. & Li, Z. (2016). In-plane graphene/boron-nitride heterostructures as an efficient metal-free electrocatalyst for the oxygen reduction reaction. Nanoscale, 8 (29), 14084-14091.

Scopus Eid


  • 2-s2.0-84979587780

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3226&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2205

Number Of Pages


  • 7

Start Page


  • 14084

End Page


  • 14091

Volume


  • 8

Issue


  • 29

Abstract


  • Exploiting metal-free catalysts for the oxygen reduction reaction (ORR) and understanding their catalytic mechanisms are vital for the development of fuel cells (FCs). Our study has demonstrated that in-plane heterostructures of graphene and boron nitride (G/BN) can serve as an efficient metal-free catalyst for the ORR, in which the C-N interfaces of G/BN heterostructures act as reactive sites. The formation of water at the heterointerface is both energetically and kinetically favorable via a four-electron pathway. Moreover, the water formed can be easily released from the heterointerface, and the catalytically active sites can be regenerated for the next cycle. Since G/BN heterostructures with controlled domain sizes have been successfully synthesized in recent reports (e.g. Nat. Nanotechnol., 2013, 8, 119), our results highlight the great potential of such heterostructures as a promising metal-free catalyst for the ORR in FCs.

UOW Authors


  •   Sun, Qiao (external author)
  •   Sun, Caixia (external author)
  •   Du, Aijun (external author)
  •   Dou, Shi Xue
  •   Li, Zhen

Publication Date


  • 2016

Citation


  • Sun, Q., Sun, C., Du, A., Dou, S. Xue. & Li, Z. (2016). In-plane graphene/boron-nitride heterostructures as an efficient metal-free electrocatalyst for the oxygen reduction reaction. Nanoscale, 8 (29), 14084-14091.

Scopus Eid


  • 2-s2.0-84979587780

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3226&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2205

Number Of Pages


  • 7

Start Page


  • 14084

End Page


  • 14091

Volume


  • 8

Issue


  • 29