Characteristics of lithium iron phosphate (LiFePO4)particles synthesized in subcritical and supercritical water

被引：104

作者：

Lee, J ^{[1
]}

Teja, AS ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2005年 / 35卷 / 01期

关键词：

lithium iron phosphate (LiFePO4); subcritical and supercritical hydrothermal synthesis; particle size; morphology;

D O I：

10.1016/j.supflu.2004.12.005

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 effect of temperature, pH, time, and reactant concentrations on the size and morphology of lithium iron phosphate (LiFePO4) particles synthesized in a batch hydrothermal reactor was investigated in this work. It was found that LiFePO4 could only be synthesized at neutral or slightly basic pH in both subcritical and supercritical water. Synthesis in subcritical water resulted in micron-sized particles of high crystallinity, whereas synthesis in supercritical water produced submicron particles. A more uniform particle size distribution was obtained at low reactant concentrations, irrespective of the synthesis temperature. Qualitative explanations for these observations are provided in terms of nucleation, growth, and agglomeration phenomena at subcritical and supercritical conditions. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：83 / 90

页数：8

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