Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1296472 | Solid State Ionics | 2011 | 5 Pages |
Abstract
Li1 + x(Ni0.5Mn0.5)1 − xO2 cathode material for Li-ion batteries has been prepared by a molten salt method using Li2CO3 salt. The influences of synthetic temperature and time have been intensively investigated. It is easy to obtain materials with a hexagonal α-NaFeO2 structure except broad peaks between 20° and 25°. Nickel in Li1 + x(Ni0.5Mn0.5)1 − xO2 is oxidized to a trivalent state while manganese maintained a tetravalent state. It is found that the discharge capacities of all samples increase with cycling. The sample prepared at 850 °C for 5 h has a discharge capacity of 130 mAh g− 1 between 2.5 and 4.5 V versus VLi+/Li at a specific current of 0.13 mA cm− 2 after 50 cycles at 25 °C.
Related Topics
Physical Sciences and Engineering
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Electrochemistry
Authors
Xuan Zhao, Yunjiang Cui, Liang Xiao, Haixia Liang, Hanxing Liu,