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Lithium Insertion Behaviour of Li1+xV3O8 Prepared by Sol-Gel Method in Methanol

Published online by Cambridge University Press:  10 February 2011

J. Kawakita
Affiliation:
Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi 3–14–1, Kouhoku-ku, Yokohama 223, JAPAN, [email protected]
Y. Katayama
Affiliation:
Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi 3–14–1, Kouhoku-ku, Yokohama 223, JAPAN, [email protected]
T. Miura
Affiliation:
Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi 3–14–1, Kouhoku-ku, Yokohama 223, JAPAN, [email protected]
T. Kishi
Affiliation:
Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi 3–14–1, Kouhoku-ku, Yokohama 223, JAPAN, [email protected]
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Abstract

Li1+xV3O8 (LT-M form) was obtained by sol-gel method in CH3OH. This form, prepared at 350°C, possessed smaller grain size and better electrochemical performance than the HT form prepared by conventional high temperature synthesis. High discharge capacity (372 mAh·g−1: x = 4.0) and reversible discharge and charge cycle were attained. When heated at 200°C, CH3OH molecules remained in the compound and crystallinity became lower by lithium insertion over x = 2.0. The lithium de-intercalation was irreversible.

Type
Research Article
Copyright
Copyright © Materials Research Society 1998

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References

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