Investigation of Fe valence in LiFePO4 by Mossbauer and XANES spectroscopic techniques

被引：51

作者：

Prince, AAM

Mylswamy, S

Chan, TS

Liu, RS

Hannoyer, B

Jean, M

Shen, CH

Huang, SM

Lee, JF

Wang, GX

机构：

[1] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan

[2] Univ Rouen, Lab Anal Spectroscop & Traitement Surface Mat, Rouen, France

[3] SYNergy ScienTech Corp, Hsinchu 300, Taiwan

[4] Natl Synchrotron Radiat Res Ctr, Hsinchu 300, Taiwan

[5] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2500, Australia

来源：

SOLID STATE COMMUNICATIONS | 2004年 / 132卷 / 07期

关键词：

lithium ion batteries; cathode material; electric charge and discharge; Mossbauer spectroscopy; XANES;

D O I：

10.1016/j.ssc.2004.08.027

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A crystalline form of LiFePO4 has been synthesized by solid-state reaction using LiOH, FeC2O4.2H(2)O and (NH4)(2)HPO4 under reducing (5% H-2 and 95% Ar) atmosphere. The sample was characterized by X-ray diffraction (XRD), Mossbauer and Xray absorption near-edge spectroscopic (XANES) methods. The crystal parameters were derived from Rietveld's refinement of the XRD data. The oxidation state of Fe was investigated by Mossbauer and Fe K-edge XANES spectral techniques. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：455 / 458

页数：4

共 14 条

[1] Lithium extraction/insertion in LiFePO4:: an X-ray diffraction and Mossbauer spectroscopy study [J].

Andersson, AS ;

Kalska, B ;

Häggström, L ;

Thomas, JO .

SOLID STATE IONICS, 2000, 130 (1-2) :41-52

[2] Lithium iron(II) phospho-olivines prepared by a novel carbothermal reduction method [J].

Barker, J ;

Saidi, MY ;

Swoyer, JL .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2003, 6 (03) :A53-A55

[3] Electronically conductive phospho-olivines as lithium storage electrodes [J].

Chung, SY ;

Bloking, JT ;

Chiang, YM .

NATURE MATERIALS, 2002, 1 (02) :123-128

[4] Structural investigations of LiFePO4 electrodes by Fe X-ray absorption spectroscopy [J].

Deb, A ;

Bergmann, U ;

Cairns, EJ ;

Cramer, SP .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (22) :7046-7049

[5] Approaching theoretical capacity of LiFePO4 at room temperature at high rates [J].

Huang, H ;

Yin, SC ;

Nazar, LF .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2001, 4 (10) :A170-A172

[6]

JURASZEK J, UNPUB MOSFIT PROGRAM

[7]

Larson A. C., 1994, GSAS EXPGUI

[8] Phospho-olivines as positive-electrode materials for rechargeable lithium batteries [J].

Padhi, AK ;

Nanjundaswamy, KS ;

Goodenough, JB .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (04) :1188-1194

[9] Magnetic structures of the triphylite LiFePO4 and of its delithiated form FePO4 [J].

Rousse, G ;

Rodriguez-Carvajal, J ;

Patoux, S ;

Masquelier, C .

CHEMISTRY OF MATERIALS, 2003, 15 (21) :4082-4090

[10] Reaction behavior of LiFePO4 as a cathode material for rechargeable lithium batteries [J].

Takahashi, M ;

Tobishima, S ;

Takei, K ;

Sakurai, Y .

SOLID STATE IONICS, 2002, 148 (3-4) :283-289

← 1 2 →