Raman characterization of Li(Al1-xCox)O2

被引：19

作者：

Chen, G ^{[1
]}

Hao, W

Shi, Y

Wu, Y

机构：

[1] Jilin Univ, Dept Mat Sci, Changchun 130023, Peoples R China

[2] Jilin Univ, Inst Mat Sci, Changchun 130023, Peoples R China

[3] Emory Univ, Dept Phys, Atlanta, GA 30322 USA

[4] Jilin Univ, Key Lab Supermol Struct & Spect, Changchun 130023, Peoples R China

[5] Emory Univ, Dept Phys, Atlanta, GA 30322 USA

来源：

JOURNAL OF MATERIALS RESEARCH | 2000年 / 15卷 / 03期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1557/JMR.2000.0086

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

For the first time, we measured Raman spectra from Li(Al1-xCox)O-2 (x = 0.5 to 0.9), a new cathode material for lithium batteries. Whereas LiCoO2 sintered at 400 degrees C develops a spinel structure, Li(Al1-xCox)O-2 sintered at 380 degrees C is amorphous, as shown by its single broad Raman band. Li(Al1-xCox)O-2 sintered at 700 or 900 degrees C shows Raman peaks independent of x that coincide with those from LiCoO2, indicating that Li(Al1-xCox)O-2 has the alpha-NaFeO2 structure (space group R (3) over bar m). Traces of the impurity phase Co3O4 appear in samples treated at 900 degrees C but not at 700 degrees C. The Raman peak widths exceed those in LiCoO2, suggesting that replacement of Co by Al increases disorder among the Li ions.

引用

页码：583 / 585

页数：3

共 10 条

[1]

*ASTM, 16427 ASTM

[2] Identification of cathode materials for lithium batteries guided by first-principles calculations [J].

Ceder, G ;

Chiang, YM ;

Sadoway, DR ;

Aydinol, MK ;

Jang, YI ;

Huang, B .

NATURE, 1998, 392 (6677) :694-696

[3]

FERRARO JR, 1994, INTRO RAMAN SPECTROS, pCH1

[4] THE RAMAN-SPECTRA OF CO3O4 [J].

HADJIEV, VG ;

ILIEV, MN ;

VERGILOV, IV .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1988, 21 (07) :L199-L201

[5] Vibrational spectroscopic and electrochemical studies of the low and high temperature phases of LiCo(1-x)M(x)O(2) (M=Ni or Ti) [J].

Huang, WW ;

Frech, R .

SOLID STATE IONICS, 1996, 86-8 :395-400

[6]

Inaba M, 1997, J RAMAN SPECTROSC, V28, P613, DOI 10.1002/(SICI)1097-4555(199708)28:8<613::AID-JRS138>3.0.CO

[7]

2-T

[8]

INABA M, 1995, CHEM LETT, V889

[9] LiAlyCo1-yO2 (R(3)over-bar-m) intercalation cathode for rechargeable lithium batteries [J].

Jang, YI ;

Huang, BY ;

Wang, HF ;

Sadoway, DR ;

Ceder, G ;

Chiang, YM ;

Liu, H ;

Tamura, H .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (03) :862-868

[10] SYNTHESIS AND ELECTROCHEMISTRY OF SPINEL LT-LICOO2 [J].

ROSSEN, E ;

REIMERS, JN ;

DAHN, JR .

SOLID STATE IONICS, 1993, 62 (1-2) :53-60

← 1 →