REVERSIBILITY OF LITHIUM INTERCALATION IN LITHIUM AND SODIUM PHYLLOMANGANATES

被引:32
作者
LE CRAS, F [1 ]
ROHS, S [1 ]
ANNE, M [1 ]
STROBEL, P [1 ]
机构
[1] CNRS, CRISTALLOG LAB, F-38042 GRENOBLE 9, FRANCE
关键词
LITHIUM INTERCALATION; PHYLLOMANGANATES; SODIUM;
D O I
10.1016/0378-7753(94)02092-H
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
The cycling of sodium and lithium phyllomanganates in liquid lithium batteries was investigated both by galvanostatical and potentiostatical methods. Slow-scanning voltammograms show the occurrence of a single-phase reaction extending from 3.1 to 2.6 V on discharge for both compounds. On cycling, the voltammogram of Li phyllomaganate smears out, while the current peak narrows in the case of Na. In both cases, the initial capacity of similar to 240 Ah/kg drops continuously on cycling between 2 and 4 V. X-ray diffraction shows an important disordering with cycling, with the possible emergence of a cubic-packed, spinel-like structure.
引用
收藏
页码:319 / 322
页数:4
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