著者

中野 秀之 奥田 匠昭 右京 良雄

出版者

公益社団法人日本セラミックス協会

雑誌

日本セラミックス協会学術論文誌 : Nippon Seramikkusu Kyokai gakujutsu ronbunshi (ISSN:18821022)

巻号頁・発行日

vol.109, no.1275, pp.974-977, 2001-11-01

被引用文献数

1

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Hydrothermal synthesis of lithium manganese oxide with α-NaFeO_2 structure has been studied. A Li_xMnO_2 nH_2O, (Li-birnessite), with rhombohedral symmetry was used as a starting material. When the molar ratio of Mn/Al was smaller than 0.9/0.1, spinel type lithium manganese oxides were obtained. On the other hand, when the molar ratio of Mn/Al was larger than 0.85/0.15, metastable lithium manganese oxides with α-NaFeO_2 structure formed at 80℃, and the capacity fade of the Li-ion cell with cathodes made of these oxides was very small in comparison with that of cathodes made of layered Li-manganese oxides, as previously reported.