Redox behavior and surface characterization of LiFePO4 in lithium hydroxide electrolyte

被引：80

作者：

Manickam, Minakshi ^{[1
]}

Singh, Pritam

Thurgate, Stephen

Prince, Kathryn

机构：

[1] Murdoch Univ, Div Sci & Engn, Murdoch, WA 6150, Australia

[2] Australian Nucl Sci & Technol Org, Lucas Heights, NSW 2234, Australia

来源：

JOURNAL OF POWER SOURCES | 2006年 / 158卷 / 01期

关键词：

redox; intercalation; lithium iron phosphate; lithium hydroxide;

D O I：

10.1016/j.jpowsour.2005.08.059

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 redox behavior and surface characterization of LiFePO4 in aqueous lithium hydroxide (LiOH) electrolyte have been investigated. The objective of this work is to investigate the electrochemical behavior of LiFePO4 in an aqueous lithium hydroxide electrolyte and its comparison with that in non-aqueous lithium ion electrolytes. Cyclic voltammetry results show that LiFePO4 undergoes partially reversible oxidation/reduction. The products formed on electrooxidation and subsequent reduction of LiFePO4 were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and secondary ion mass spectrometry (SIMS). It is found that lithium extraction from LiFePO4 occurs during oxidation. The products formed on subsequent reduction consist of LiFePO4 and Fe3O4. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：646 / 649

页数：4

共 11 条

[1] Conductivity improvements to spray-produced LiFePO4 by addition of a carbon source [J].