New anode materials of Li1+xV1−xO2 (0 ≤ x ≤ 0.1) for secondary lithium batteries: correlation between structures and properties
New anode materials of Li1+xV1−xO2 (0 ≤ x ≤ 0.1) for secondary lithium batteries: correlation between structures and properties
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DOI：
10.1007/s10800-011-0299-7
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发表时间：
2011-04
影响因子：
2.9
通讯作者：
Won Kim;Y. Jeong;H. Choi;Y. J. Kim;J. Song;H. Lee;Y. J. Lee
中科院分区：
文献类型：
--
作者：
Won Kim;Y. Jeong;H. Choi;Y. J. Kim;J. Song;H. Lee;Y. J. Lee
Li1+xV1−xO2(0 ≤x≤ 0.1) compounds were studied as the anode materials for a lithium-ion battery. The crystal and electronic structures of the prepared materials were correlated with electrical conductivities and electrochemical properties. The electrochemical behaviors were significantly dependent on the composition of Li1+xV1−xO2, and these were resulted from the perturbation of the local electronic structure arising from the increase in lithium contents in Li1+xV1−xO2rather than from the slight distortion in the crystal structure. The electrical conductivities of Li1+xV1−xO2increased with the increase in lithium contents in the compounds. Li1.1V0.9O2and Li1.075V0.925O2samples exhibit the first discharge capacities of 250 and 241 mAh g−1at 0.2 C-rate, respectively.
