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Graphite-anchored lithium vanadium oxide as anode of lithium ion battery
被引:15
作者:
Yi, Jin
[1
,2
]
Key, Julian
[3
]
Wang, Fei
[1
,2
]
Wang, Yonggang
[1
,2
]
Wang, Congxiao
[1
,2
]
Xia, Yongyao
[1
,2
]
机构:
[1] Fudan Univ, Inst New Energy, Dept Chem, Shanghai 200433, Peoples R China
[2] Fudan Univ, Inst New Energy, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China
[3] Univ Western Cape, South African Inst Adv Mat Chem, ZA-7535 Cape Town, South Africa
基金:
中国国家自然科学基金;
关键词:
Lithium vanadium oxide;
Graphite;
Reversible capacity;
Cyclic stability;
ELECTROCHEMICAL IMPEDANCE;
THERMAL-STABILITY;
INTERCALATION;
ELECTROLYTE;
D O I:
10.1016/j.electacta.2013.05.035
中图分类号:
O646 [电化学、电解、磁化学];
学科分类号:
081704 ;
摘要:
Graphite-anchored lithium vanadium oxide (Li1.1V0.9O2) has been synthesized via a "one-pot" in situ method. The effects of the synthesis conditions, such as the ratio of reaction components and calcination temperature, on the electrochemical performance are systematically investigated by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), electrochemical impedance spectroscopy (EIS), galvanostatic discharge/charge tests and differential scanning calorimetry (DSC). Compared with the simple mixture of graphite and lithium vanadium oxide, the graphite-anchored lithium vanadium oxide delivers an enhanced reversible capacity, rate capability and cyclic stability. It also shows better thermal stability. (C) 2013 Elsevier Ltd. All rights reserved.
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页码:534 / 540
页数:7
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