Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Fe2O3 nanocluster-decorated graphene as O-2 electrode for high energy Li-O-2 batteries
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 - 2012/7/26
Y1 - 2012/7/26
N2 - 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.
AB - 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.
KW - LITHIUM ION BATTERIES
KW - CHEMICAL-VAPOR-DEPOSITION
KW - AIR BATTERY
KW - OXYGEN BATTERY
KW - FUEL-CELLS
KW - PERFORMANCE
KW - CATALYSTS
KW - STORAGE
KW - FILMS
KW - CAPABILITY
U2 - 10.1039/c2ra20757e
DO - 10.1039/c2ra20757e
M3 - Journal article
VL - 2
SP - 8508
EP - 8514
JO - RSC Advances
JF - RSC Advances
SN - 2046-2069
IS - 22
ER -