7Li-NMR study of carbon fiber and graphite anodes for lithium ion batteries

被引：44

作者：

Imanishi, N ^{[1
]}

Kumai, K ^{[1
]}

Kokugan, H ^{[1
]}

Takeda, Y ^{[1
]}

Yamamoto, O ^{[1
]}

机构：

[1] Mie Univ, Fac Engn, Dept Chem, Tsu, Mie 514, Japan

来源：

SOLID STATE IONICS | 1998年 / 107卷 / 1-2期

关键词：

Li-7-NMR; lithium battery; carbon; intercalation;

D O I：

10.1016/S0167-2738(97)00520-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Lithium intercalation of a highly crystallized carbon fiber and natural graphite were investigated using Li-7-NMR spectroscopy. The carbon fiber having the higher crystallinity, showed resonance signals belonging to LiCx (x > 12), LiC12, LiC6 phases and decomposition products. The transition between these phases is fundamentally consistent with the theoretical mechanism. However, the spectra of the graphite showed an occurrence of an irregular structure in addition to these normal phases. This signal shows reversible behavior upon intercalation, and is attributed to the lithium in a turbostratic structure.

引用

页码：135 / 144

页数：10

共 11 条

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