Fe2O3 nanocluster-decorated graphene as O-2 electrode for high energy Li-O-2 batteries

Zhang, Wenyu and Zeng, Yi and Xu, Chen and Tan, Huiteng and Liu, Weiling and Zhu, Jixin and Xiao, Ni and Hng, Huey Hoon and Ma, Jan and Hoster, Harry E. and Yazami, Rachid and Yan, Qingyu (2012) Fe2O3 nanocluster-decorated graphene as O-2 electrode for high energy Li-O-2 batteries. RSC Advances, 2 (22). pp. 8508-8514. ISSN 2046-2069

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Abstract

Fe2O3 nanocluster-decorated graphene (Fe2O3/graphene) hybrids with controlled contents of Fe2O3 were prepared by a facile electrochemical process. These Fe2O3/graphene hybrids were tested as O-2 electrodes for Li-O-2 batteries, which exhibited enhanced discharge capacities as compared to that of a pure graphene based O-2 electrode, e.g. the Fe2O3/graphene electrode with 29.0 wt% of Fe2O3 delivered a discharge capacity of 8290 mA h g(-1) and a round-trip efficiency of 65.9% as compared to 5100 mA h g(-1) and 57.5% for a pure graphene electrode. The excellent electrochemical properties of Fe2O3/graphene as an O-2 electrode is ascribed to the combination of the fast kinetics of electron transport provided by the graphene sheets and the high electrocatalytic activity for O-2 reduction provided by the Fe2O3.

Item Type:
Journal Article
Journal or Publication Title:
RSC Advances
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1600
Subjects:
ID Code:
72928
Deposited By:
Deposited On:
13 Feb 2015 13:39
Refereed?:
Yes
Published?:
Published
Last Modified:
01 May 2020 03:20