Fe2O3 nanocluster-decorated graphene as O2 electrode for high energy Li-O2 batteries

Wenyu Zhang; Yi Zeng; Chen Xu; Huiteng Tan; Weiling Liu; Jixin Zhu; Ni Xiao; Huey Hoon Hng; Jan Ma; Harry E. Hoster; Rachid Yazami; Qingyu Yan

doi:10.1039/c2ra20757e

Fe₂O₃ nanocluster-decorated graphene as O₂ electrode for high energy Li-O₂ batteries

Wenyu Zhang, Yi Zeng, Chen Xu, Huiteng Tan, Weiling Liu, Jixin Zhu, Ni Xiao, Huey Hoon Hng, Jan Ma, Harry E. Hoster, Rachid Yazami, Qingyu Yan^*

^*Corresponding author for this work

Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

61 Citations (Scopus)

Abstract

Fe₂O₃ nanocluster-decorated graphene (Fe ₂O₃/graphene) hybrids with controlled contents of Fe ₂O₃ were prepared by a facile electrochemical process. These Fe₂O₃/graphene hybrids were tested as O₂ electrodes for Li-O₂ batteries, which exhibited enhanced discharge capacities as compared to that of a pure graphene based O₂ 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 O₂ reduction provided by the Fe₂O ₃.

Original language	English
Pages (from-to)	8508-8514
Number of pages	7
Journal	RSC Advances
Volume	2
Issue number	22
DOIs	https://doi.org/10.1039/c2ra20757e
Publication status	Published - Sept 28 2012
Externally published	Yes

ASJC Scopus Subject Areas

General Chemistry
General Chemical Engineering

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title = "Fe2O3 nanocluster-decorated graphene as O2 electrode for high energy Li-O2 batteries",

abstract = "Fe2O3 nanocluster-decorated graphene (Fe 2O3/graphene) hybrids with controlled contents of Fe 2O3 were prepared by a facile electrochemical process. These Fe2O3/graphene hybrids were tested as O2 electrodes for Li-O2 batteries, which exhibited enhanced discharge capacities as compared to that of a pure graphene based O2 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 O2 reduction provided by the Fe2O 3.",

author = "Wenyu Zhang and Yi Zeng and Chen Xu and Huiteng Tan and Weiling Liu and Jixin Zhu and Ni Xiao and Hng, {Huey Hoon} and Jan Ma and Hoster, {Harry E.} and Rachid Yazami and Qingyu Yan",

year = "2012",

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doi = "10.1039/c2ra20757e",

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AU - Zhang, Wenyu

AU - Zeng, Yi

AU - Xu, Chen

AU - Tan, Huiteng

AU - Liu, Weiling

AU - Zhu, Jixin

AU - Xiao, Ni

AU - Hng, Huey Hoon

AU - Ma, Jan

AU - Hoster, Harry E.

AU - Yazami, Rachid

AU - Yan, Qingyu

PY - 2012/9/28

Y1 - 2012/9/28

N2 - Fe2O3 nanocluster-decorated graphene (Fe 2O3/graphene) hybrids with controlled contents of Fe 2O3 were prepared by a facile electrochemical process. These Fe2O3/graphene hybrids were tested as O2 electrodes for Li-O2 batteries, which exhibited enhanced discharge capacities as compared to that of a pure graphene based O2 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 O2 reduction provided by the Fe2O 3.

AB - Fe2O3 nanocluster-decorated graphene (Fe 2O3/graphene) hybrids with controlled contents of Fe 2O3 were prepared by a facile electrochemical process. These Fe2O3/graphene hybrids were tested as O2 electrodes for Li-O2 batteries, which exhibited enhanced discharge capacities as compared to that of a pure graphene based O2 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 O2 reduction provided by the Fe2O 3.

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ER -

Fe₂O₃ nanocluster-decorated graphene as O₂ electrode for high energy Li-O₂ batteries

Abstract

ASJC Scopus Subject Areas

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