Nanosheets Co<inf>3</inf>O<inf>4</inf> Interleaved with Graphene for Highly Efficient Oxygen Reduction

Odedairo, Taiwo, Yan, Xuecheng, Ma, Jun, Jiao, Yalong, Yao, Xiangdong, Du, Aijun and Zhu, Zhonghua (2015) Nanosheets Co<inf>3</inf>O<inf>4</inf> Interleaved with Graphene for Highly Efficient Oxygen Reduction. ACS Applied Materials and Interfaces, 7 38: 21373-21380. doi:10.1021/acsami.5b06063


Author Odedairo, Taiwo
Yan, Xuecheng
Ma, Jun
Jiao, Yalong
Yao, Xiangdong
Du, Aijun
Zhu, Zhonghua
Title Nanosheets Co3O4 Interleaved with Graphene for Highly Efficient Oxygen Reduction
Journal name ACS Applied Materials and Interfaces   Check publisher's open access policy
ISSN 1944-8252
1944-8244
Publication date 2015-09-30
Sub-type Article (original research)
DOI 10.1021/acsami.5b06063
Open Access Status Not Open Access
Volume 7
Issue 38
Start page 21373
End page 21380
Total pages 8
Place of publication Washington, United States
Publisher American Chemical Society
Collection year 2016
Language eng
Formatted abstract
Efficient yet inexpensive electrocatalysts for oxygen reduction reaction (ORR) are an essential component of renewable energy devices, such as fuel cells and metal-air batteries. We herein interleaved novel Co3O4 nanosheets with graphene to develop a first ever sheet-on-sheet heterostructured electrocatalyst for ORR, whose electrocatalytic activity outperformed the state-of-the-art commercial Pt/C with exceptional durability in alkaline solution. The composite demonstrates the highest activity of all the nonprecious metal electrocatalysts, such as those derived from Co3O4 nanoparticle/nitrogen-doped graphene hybrids and carbon nanotube/nanoparticle composites. Density functional theory (DFT) calculations indicated that the outstanding performance originated from the significant charge transfer from graphene to Co3O4 nanosheets promoting the electron transport through the whole structure. Theoretical calculations revealed that the enhanced stability can be ascribed to the strong interaction generated between both types of sheets.
Keyword fuel cell
Nanosheets CO3O4
nonprecious metal
oxygen reduction reaction
sheet-on-sheet heterostructure
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2016 Collection
 
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