共 49 条
Synthesis and characterization of graphene-nickel oxide nanostructures for fast charge-discharge application
被引:137
作者:
Kottegoda, Iresha R. M.
[1
]
Idris, Nurul Hayati
[1
,2
]
Lu, Lin
[1
]
Wang, Jia-Zhao
[1
]
Liu, Hua-Kun
[1
]
机构:
[1] Univ Wollongong, Inst Superconducting & Elect Mat, ARC Ctr Excellence Electromat Sci, Wollongong, NSW 2519, Australia
[2] Univ Malaysia Terengganu, Fac Sci, Dept Phys Sci, Kuala Terengganu 21030, Malaysia
基金:
澳大利亚研究理事会;
关键词:
NiO nanoparticles;
Graphene;
Nickel oxide-graphene composites;
Lithium batteries;
LITHIUM-ION BATTERIES;
ANODE MATERIAL;
REVERSIBLE CAPACITY;
ELECTRODE MATERIALS;
CYCLIC PERFORMANCE;
ENERGY-STORAGE;
GRAPHITE OXIDE;
LI STORAGE;
COMPOSITE;
NIO;
D O I:
10.1016/j.electacta.2011.03.143
中图分类号:
O646 [电化学、电解、磁化学];
学科分类号:
081704 ;
摘要:
Graphene-metal oxide composites as anode materials for Li-ion batteries have been investigated extensively, but these attempts are mostly limited to moderate rate charge-discharge applications. Here, graphene-nickel oxide nanostructures have been synthesised using a controlled hydrothermal method, which enabled in situ formation of NiO with a coralloid nanostructure on graphene. Graphene/NiO (20%), graphene/NiO (50%) and pure NiO show stable discharge capacities of 185 mAh/g at 20 C (1 C = 300 mA/g), 450 mAh/g at 1 C, and 400 mAh/g at 1 C, respectively. High rate capability and good stability in prolonged charge-discharge cycling permit the application of the material in fast charging batteries for upcoming electric vehicles. To the best of our knowledge such fast rate performance of graphene/metal oxide composite as anode and such stability for pure NiO as anode have not been reported previously. (C) 2011 Elsevier Ltd. All rights reserved.
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页码:5815 / 5822
页数:8
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