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Ultrathin Spinel LiMn2O4 Nanowires as High Power Cathode Materials for Li-Ion Batteries
被引:451
作者:
Lee, Hyun-Wook
[1
]
Muralidharan, P.
[1
]
Ruffo, Riccardo
[2
]
Mari, Claudio M.
[2
]
Cui, Yi
[3
]
Kim, Do Kyung
[1
]
机构:
[1] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
[2] Univ Milano Bicocca, Dipartimento Sci Mat, I-20125 Milan, Italy
[3] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA
关键词:
Energy storage;
lithium ion battery;
LiMn2O4;
nanowires;
high power density;
Jahn-Teller distortion;
MANGANESE-DIOXIDE;
LITHIUM;
ELECTRODES;
OPTIMIZATION;
PERFORMANCE;
CAPACITY;
CELL;
D O I:
10.1021/nl101047f
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Ultrathin LiMn2O4 nanowtres with cubic spinet structure were synthesized by using a solvothermal reaction to produce alpha-MnO2 nanowire followed by solid-state lit-Nation. LiMn2O4 nanowires have diameters less than 10 nm and lengths of several micrometers Galvanostatic battery testing showed that LiMn2O4 nanowires deliver 100 and 78 mAh/g at very high rate (60C and 150C, respectively) in a larger potential window with very good capacity retention and outstanding structural stability Such performances are due to both the favorable morphology and the high crystallinity of nanowires
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页码:3852 / 3856
页数:5
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