Lithium insertion into Li4V3O8 |
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Authors: | Jin Kawakita Takashi Miura Tomiya Kishi |
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Affiliation: | Department of Applied Chemistry, Faculty of Science and Technology, Keio University Hiyoshi 3-14-1, Kouhoku-ku, Yokohama 223-8522, Japan |
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Abstract: | The lithium insertion characteristics of lithium vanadate, Li4V3O8, were investigated using LiV3O8 prepared by the precipitation technique as the starting material. The Li4V3O8 phase was formed by lithiation over x=1.5 in Li1+xV3O8, and the diffusion of lithium in this phase determined the reaction rate of insertion more than x=1.5. Improvement of insertion kinetics in the Li4V3O8 phase extended the lithium insertion limit from x=3.2 to x=4.0, compared with the case of LiV3O8 by conventional high temperature synthesis. Lithium insertion proceeds as the single-phase reaction in the range of 3.2<x<4.0. |
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Keywords: | Vanadate Lithium Insertion Transition Diffusion |
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