Electrical conductivity and charge compensation in Ta doped Li4Ti5O12

被引：238

作者：

Wolfenstine, J. ^{[1
]}

Allen, J. L. ^{[1
]}

机构：

[1] USA, AMSRD ARL SE DC, Res Lab, Adelphi, MD 20783 USA

来源：

JOURNAL OF POWER SOURCES | 2008年 / 180卷 / 01期

关键词：

anode; conductivity; defects; sintering; Li4Ti5O12;

D O I：

10.1016/j.jpowsour.2008.02.019

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：

Ta doping in Li4Ti5O12 (Li4Ti4.95Ta0.05O12) as function of different heat-treat atmospheres (oxidizing/reducing) was investigated and compared to Li4Ti5O12 to determine its effect on ionic/electronic conductivity and the charge compensating defects. Under oxidizing conditions Li4Ti4.95Ta0.05O12 was primarily an ionic conductor where the extra charge of Ta was compensated by Ti vacancies. Under reducing conditions Li4Ti4.95Ta0.05O12 was primarily an electronic conductor where the extra charge of Ta was compensated by an electron. The charge compensating defects were confirmed by sintering data. Published by Elsevier B.V.

引用

页码：582 / 585

页数：4

共 29 条

[1] Low temperature performance of nanophase Li4Ti5O12 [J].

Allen, J. L. ;

Jow, T. R. ;

Wolfenstine, J. .

JOURNAL OF POWER SOURCES, 2006, 159 (02) :1340-1345

[2]

Barsum MV., 1997, FUNDAMENTALS CERAMIC

[3] STUDY OF SOLID ELECTROLYTE POLARIZATION BY A COMPLEX ADMITTANCE METHOD [J].

BAUERLE, JE .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1969, 30 (12) :2657-&

[4] SINTERING AND GRAIN-GROWTH KINETICS OF MGAL2O4 [J].

BRATTON, RJ .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1971, 54 (03) :141-&

[5] THE AC CONDUCTIVITY OF POLYCRYSTALLINE LISICON, LI2+2XZN1-XGEO4, AND A MODEL FOR INTERGRANULAR CONSTRICTION RESISTANCES [J].

BRUCE, PG ;

WEST, AR .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1983, 130 (03) :662-669

[6] Studies of Mg-substituted Li4-xMgxTi5O12 spinel electrodes (0 ≤ x ≤ 1) for lithium batteries [J].

Chen, CH ;

Vaughey, JT ;

Jansen, AN ;

Dees, DW ;

Kahaian, AJ ;

Goacher, T ;

Thackeray, MM .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (01) :A102-A104

[7]

Chiang Y.M., 1997, PHYS CERAMICS

[8] STRUCTURE AND ELECTROCHEMISTRY OF THE SPINEL OXIDES LITI2O4 AND LI4/3TI5/3O4 [J].

COLBOW, KM ;

DAHN, JR ;

HAERING, RR .

JOURNAL OF POWER SOURCES, 1989, 26 (3-4) :397-402

[9]

David Kingery W., 1976, INTRO CERAMICS, V17

[10] SPINEL ANODES FOR LITHIUM-ION BATTERIES [J].

FERG, E ;

GUMMOW, RJ ;

DEKOCK, A ;

THACKERAY, MM .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1994, 141 (11) :L147-L150

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