Graphene-Co3O4 nanocomposite as electrocatalyst with high performance for oxygen evolution reaction

Zhao, Yufei, Chen, Shuangqiang, Sun, Bing, Su, Dawei, Huang, Xiaodan, Liu, Hao, Yan, Yiming, Sun, Kening and Wang, Guoxiu (2015) Graphene-Co3O4 nanocomposite as electrocatalyst with high performance for oxygen evolution reaction. Scientific Reports, 5 . doi:10.1038/srep07629


Author Zhao, Yufei
Chen, Shuangqiang
Sun, Bing
Su, Dawei
Huang, Xiaodan
Liu, Hao
Yan, Yiming
Sun, Kening
Wang, Guoxiu
Title Graphene-Co3O4 nanocomposite as electrocatalyst with high performance for oxygen evolution reaction
Formatted title
Graphene-Co3O4 nanocomposite as electrocatalyst with high performance for oxygen evolution reaction
Journal name Scientific Reports   Check publisher's open access policy
ISSN 2045-2322
Publication date 2015-01-06
Year available 2015
Sub-type Article (original research)
DOI 10.1038/srep07629
Open Access Status DOI
Volume 5
Total pages 7
Place of publication London, United Kingdom
Publisher Nature Publishing Group
Language eng
Formatted abstract
Graphene-Co3O4 composite with a unique sandwich-architecture was successfully synthesized and applied as an efficient electrocatalyst for oxygen evolution reaction. Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) analyses confirmed that Co3O4 nanocrystals were homogeneously distributed on both sides of graphene nanosheets. The obtained composite shows enhanced catalytic activities in both alkaline and neutral electrolytes. The onset potential towards the oxygen evolution reaction is 0.406 V (vs. Ag/AgCl) in 1 M KOH solution, and 0.858 V (vs. Ag/AgCl) in neutral phosphate buffer solution (PBS), respectively. The current density of 10 mA/cm2 has been achieved at the overpotential of 313 mV in 1M KOH and 498mV in PBS. The graphene-Co3O4 composite also exhibited an excellent stability in both alkaline and neutral electrolytes. In particular, no obvious current density decay was observed after 10 hours testing in alkaline solution and the morphology of the material was well maintained, which could be ascribed to the synergistic effect of combining Co3O4 and graphene.
Keyword Multidisciplinary Sciences
Science & Technology - Other Topics
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID DP1093855
FT110100800
21175012
2012DFR40240
201306030039
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 72 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 81 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Wed, 15 Mar 2017, 01:00:30 EST by Web Cron on behalf of Learning and Research Services (UQ Library)