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Electrochemical properties and structural characterization of layered Li[Ni0.5Mn0.5]O2 cathode materials |
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| Authors: | Y-K Sun CS Yoon |
| Affiliation: | a Department of Chemical Engineering, Center for Information and Communication Materials, Hanyang University, 17 Haendang-Dong, Seongdong-Gu, Seoul 133-791, South Korea b Department of Materials Science and Engineering, Hanyang University, Seongdong-Gu, Seoul 133-791, South Korea c High-Tech Research Center, Kanagawa University, Yokohama 221-8686, Japan |
| Abstract: | Layered LiNi0.5Mn0.5]O2 materials with high homogeneity and crystallinity were prepared using high speed ball milling. The LiNi0.5Mn0.5]O2 electrode delivered a high discharge capacity of 152 mA h g−1 between 2.8 and 4.3 V with excellent cycleability. The TEM analysis showed that the LiNi0.5Mn0.5]O2 electrode went through a considerable morphological change without altering its initial layered structure while the electrode retained its initial discharge capacity even after 50 cycles. |
| Keywords: | Lithium secondary batteries Layered manganese Cathode materials Structural change TEM |
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