Solution phase synthesis of halogenated graphene and the electrocatalytic activity for oxygen reduction reaction

Wu, Kuang-Hsu, Wang, Da-Wei, Zeng, Qingcong, Li, Yang and Gentle, Ian R. (2014) Solution phase synthesis of halogenated graphene and the electrocatalytic activity for oxygen reduction reaction. Chinese Journal of Catalysis, 35 6: 884-890. doi:10.1016/S1872-2067(14)60108-X


Author Wu, Kuang-Hsu
Wang, Da-Wei
Zeng, Qingcong
Li, Yang
Gentle, Ian R.
Title Solution phase synthesis of halogenated graphene and the electrocatalytic activity for oxygen reduction reaction
Journal name Chinese Journal of Catalysis   Check publisher's open access policy
ISSN 1872-2067
0253-9837
Publication date 2014-06
Year available 2014
Sub-type Article (original research)
DOI 10.1016/S1872-2067(14)60108-X
Open Access Status
Volume 35
Issue 6
Start page 884
End page 890
Total pages 7
Place of publication Beijing China
Publisher Science Press
Collection year 2015
Language eng
Abstract Metal-free carbon electrocatalyts for the oxygen reduction reaction (ORR) are attractive for their high activity and economic advantages. However, the origin of the activity has never been clearly elucidated in a systematic manner. Halogen group elements are good candidates for elucidating the effect, although it has been a difficult task due to safety issues. In this report, we demonstrate the synthesis of Cl-, Br- and I-doped reduced graphene oxide through two solution phase syntheses. We have evaluated the effectiveness of doping and performed electrochemical measurements of the ORR activity on these halogenated graphene materials. Our results suggest that the high electronegativity of the dopant is not the key factor for high ORR activity; both Br- and I-doped graphene promoted ORR more efficiently than Cl-doped graphene. Furthermore, an unexpected sulfur-doping in acidic conditions suggests that a high level of sulfide can degrade the ORR activity of the graphene material.
Keyword Halogen-doping
Sulfur-doping
Graphene
Oxygen reduction reaction
Electrocatalyst
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Chemistry and Molecular Biosciences
 
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