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Science 22 April 1994:
Vol. 264. no. 5158, pp. 556 - 558
DOI: 10.1126/science.264.5158.556
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Articles

A Mechanism of Lithium Storage in Disordered Carbons

Kenji Sato 1, Minoru Noguchi 1, Atsushi Demachi 1, Naohiko Oki 1, and Morinobu Endo 2

1 Honda Research and Development Co., Ltd., Wako Research Center, 1-4-1 Chuo, Wako-shi, Saitama, 351-01 Japan
2 Faculty of Engineering, Shinshu University, 500 Wakasato, Nagano, 380 Japan

High-resolution electron microscopy and lithium-7 nuclear magnetic resonance measurements were carried out for a disordered carbon material, prepared by heat treatment of polyphenylene, in which lithium was stored electrochemically. The nuclear magnetic resonance spectrum suggests the existence of Li2 covalent molecules in the carbon material. This extra covalent site of lithium storage promises extraordinarily high energy density for secondary batteries.

Submitted on November 3, 1993
Accepted on March 1, 1994


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Mechanisms for Lithium Insertion in Carbonaceous Materials.
J. R. Dahn, T. Zheng, Y. Liu, and J. S. Xue (1995)
Science 270, 590-593
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Science. ISSN 0036-8075 (print), 1095-9203 (online)