New findings on the phase transitions in Li1-xNiO2:: in situ synchrotron X-ray diffraction studies

被引：89

作者：

Yang, XQ ^{[1
]}

Sun, X ^{[1
]}

McBreen, J ^{[1
]}

机构：

[1] Brookhaven Natl Lab, Upton, NY 11973 USA

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 1999年 / 1卷 / 06期

关键词：

lithium batteries; lithium nickel oxide; in situ X-ray diffraction; intercalation cathode materials;

D O I：

10.1016/S1388-2481(99)00046-6

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A synchrotron X-ray source was used for in situ X-ray diffraction (XRD) studies on a Li1-xNiO2 cathode in the transmission mode. New phase transitions, different from those published in the literature, were observed. When a Li \ LiNiO2 cell was charged at the C/13 and C/84 rates in the 3.5 to 5.1 V range, there were two first-order phase transitions. with all three phases having a hexagonal structure. These new findings question the interpretation of XRD patterns used in the literature as evidence for monoclinic phase formation in this system during charge. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：227 / 232

页数：6

共 7 条

[1]

Gao YA, 1998, ELECTROCHEM SOLID ST, V1, P117, DOI 10.1149/1.1390656

[2] SOME MAGNETIC AND CRYSTALLOGRAPHIC PROPERTIES OF THE SYSTEM LIX+NI1-2X++NIX+++O [J].