Single Crystal Growth,Structure and Physical Property of LiCoO2 and LiNiO2 |
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| Authors: | Junji Akimoto Yoshito Gotoh |
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| Affiliation: | National Institute of Materials and Chemical Research , 1-1 Higashi, Tsukuba, Ibaraki , 305-8565 , Japan |
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| Abstract: | Abstract Single crystals of LiCoO2 and LiNiO2 have been successfully grown for the first time by a flux method. A single-crystal X-ray diffraction study confirmed trigonal symmetry, and their lattice parameters were a = 2.8161(5) Å and c = 14.0536(5) Å for LiCoO2, and a = 2.8899(13) Å and c = 14.1938(17) Å for LiNiO2, respectively. The cation distribution in Li0.92Ni1.08O2 was determined to be (Li0.74Ni0.26)3a[Li0.18Ni0.82]3bO2 with a final R value of 2.7% by a single-crystal X-ray structure analysis. LiCoO2 proved to show a semiconducting behavior below room temperature by an in-plane electrical resistivity measurement using the single crystal specimen. |
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| Keywords: | single crystal growth structure analysis lithium-ion battery |
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