Thermally-induced cation disorder in LiFePO4

被引：18
|
作者：
Biendicho, Jordi Jacas [1 ]
West, Anthony R. [1 ]
机构：
[1] Univ Sheffield, Dept Mat Sci & Engn, Sheffield S1 3JD, S Yorkshire, England
来源：
SOLID STATE IONICS | 2011年 / 203卷 / 01期
基金：
英国工程与自然科学研究理事会;
关键词：
LiFePO4; Lithium cathode; X-ray diffraction; Cation disorder; STABILITY; DIFFRACTION; PHOSPHATES; TRIPHYLITE; BATTERIES; LIXFEPO4; BEHAVIOR; OLIVINES; DEFECTS; OXIDES;
D O I：
10.1016/j.ssi.2011.08.006
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：
LiFePO4 has a fully ordered olivine structure in samples prepared by solid state reaction below similar to 800 degrees C but, with increasing temperature, a small amount of Li and Fe site exchange occurs reaching a value of about 4% just below melting at 975 degrees C. The disorder is reversible on annealing at lower temperatures and is detected by changes in lattice parameters and in cation site occupancies obtained by Rietveld refinement of X-ray powder diffraction data. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：33 / 36
页数：4
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