LITHIUM ORDERING IN CHEMICALLY DELITHIATED LixCoO2
来源期刊：Acta Metallurgica Sinica2006年第3期
论文作者：Y. G. Shi W.H. Tian X. Liu J. Q. Li H.X. Yang
Key words：LixCoO2; delithiated; Li-ordering;
Abstract: Chemical delithiated LixCoO2 (x=1, 0.7, 0.66 and 0.57) has been synthesized by using a strong oxidant, NaS2O8. The structure investigations indicate that all the samples remain with hexagonal cells, which have expansion of c axis during Li extraction. Transmission electron microscopy (TEM)observations revealed the presence of superstructures arising from intercalated Li-ordering corresponding to first-principle calculations. The measurements of the physical properties are also influenced by Li concentration.
Y. G. Shi1，W.H. Tian2，X. Liu2，J. Q. Li1，H.X. Yang1
(1.Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, The Chinese Academy of Sciences, Beijing 100080, China;
2.Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083, China)
Abstract:Chemical delithiated LixCoO2 (x=1, 0.7, 0.66 and 0.57) has been synthesized by using a strong oxidant, NaS2O8. The structure investigations indicate that all the samples remain with hexagonal cells, which have expansion of c axis during Li extraction. Transmission electron microscopy (TEM)observations revealed the presence of superstructures arising from intercalated Li-ordering corresponding to first-principle calculations. The measurements of the physical properties are also influenced by Li concentration.
Key words:LixCoO2; delithiated; Li-ordering;
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