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


Autoria(s): Sun, Qiao; Sun, Caixia; Du, Aijun; Li, Zhen; Dou, Shi Xue
Data(s)

23/12/2014

Resumo

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 fourelectron pathway. Moreover, the water formed can be easily released from the heterointerface, and the catalytically active sites can be regenerated for the next reaction. 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 ORR in FCs.

Formato

application/pdf

Identificador

http://eprints.qut.edu.au/79650/

Relação

http://eprints.qut.edu.au/79650/1/__staffhome.qut.edu.au_staffgroupd%24_du9_Desktop_Qiao-JACS_Unpublished%20works%20submitted%20to%20jacs%20supported%20by%20ARC%20grant.pdf

Sun, Qiao, Sun, Caixia, Du, Aijun, Li, Zhen, & Dou, Shi Xue (2014) In-plane graphene/boron-nitride heterostructure as efficient metal-free electrocatalyst for the oxygen reduction reaction. [Working Paper] (Unpublished)

http://purl.org/au-research/grants/ARC/DP130102420

Direitos

Copyright 2014 [please consult the authors]

Fonte

School of Chemistry, Physics & Mechanical Engineering; Faculty of Science and Technology

Palavras-Chave #Fuel Cell #Oxygen Reduction
Tipo

Working Paper