Ultrathin spinel LiMn2O4 nanowires as high power cathode materials for Li-ion batteries.
Ultrathin LiMn(2)O(4) nanowires with cubic spinel structure were synthesized by using a solvothermal reaction to produce α-MnO(2) nanowire followed by solid-state lithiation. LiMn(2)O(4) nanowires have diameters less than 10 nm and lengths of several micrometers. Galvanostatic battery testing showed that LiMn(2)O(4) 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.
Lee
Hyun-Wook
HW
Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea.
Muralidharan
P
P
Ruffo
Riccardo
R
Mari
Claudio M
CM
Cui
Yi
Y
Kim
Do Kyung
DK