Issue 20, 2014

Graphene–Co3O4 nanocomposite as an efficient bifunctional catalyst for lithium–air batteries

Abstract

A facile hydrothermal route has been developed to prepare graphene–Co3O4 nanocomposites. The graphene–Co3O4 nanocomposite catalyst demonstrates an excellent catalytic activity toward oxygen-reduction reaction including a considerably more positive half-wave potential (−0.23 V) than that of pristine graphene (−0.39 V), as well as higher cathodic currents. More importantly, this catalyst shows better long-term durability than the commercial Pt/C catalyst in an alkaline solution. The preliminary results indicate that the graphene–Co3O4 nanocomposite is an efficient and stable bifunctional catalyst for Li–air batteries and may be an alternative to the high-cost commercial Pt/C catalyst for the ORR/OER in alkaline solutions.

Graphical abstract: Graphene–Co3O4 nanocomposite as an efficient bifunctional catalyst for lithium–air batteries

Supplementary files

Article information

Article type
Paper
Submitted
15 Feb 2014
Accepted
24 Mar 2014
First published
25 Mar 2014

J. Mater. Chem. A, 2014,2, 7188-7196

Author version available

Graphene–Co3O4 nanocomposite as an efficient bifunctional catalyst for lithium–air batteries

C. Sun, F. Li, C. Ma, Y. Wang, Y. Ren, W. Yang, Z. Ma, J. Li, Y. Chen, Y. Kim and L. Chen, J. Mater. Chem. A, 2014, 2, 7188 DOI: 10.1039/C4TA00802B

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