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Cycleable graphite/FeSi6 alloy composite as a high capacity anode material for Li-ion batteries
被引:65
|作者:
Li, T.
[1
]
Cao, Y. L.
[1
]
Ai, X. P.
[1
]
Yang, H. X.
[1
]
机构:
[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China
关键词:
Fe-Si alloy;
Mechanical ball milling;
Anode material;
Li-ion battery;
D O I:
10.1016/j.jpowsour.2008.02.057
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
FeSi6/graphite composite was prepared by mechanical ball milling. The FeSi6 alloy particles consist of an electrochemically active silicon phase and inactive phases FeSi2, distributed uniformly in the graphite matrix. The composite anode offers a large reversible capacity (about 800 mAh g(-1)) and good cycleability. due to the buffering effect of the inactive FeSi2 phase and graphite layers on the volumetric changes of Si phase during lithium-Si alloying reaction. Since FeSi6 alloy is a low-cost industrial material, this alloy compound provides a possible alternative for development of high capacity lithium-ion batteries. (c) 2008 Elsevier B.V. All rights reserved.
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页码:473 / 476
页数:4
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