Study on the Theoretical Capacity of Spinel Lithium Titanate Induced by Low-Potential Intercalation

被引：164

作者：

Ge, Hao ^{[1
]}

Li, Ning ^{[1
]}

Li, Deyu ^{[1
]}

Dai, Changsong ^{[1
]}

Wang, Dianlong ^{[1
]}

机构：

[1] Harbin Inst Technol, Dept Appl Chem, Harbin 150001, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 16期

关键词：

ELECTROCHEMICAL PROPERTIES; ION BATTERIES; X LESS; LI4TI5O12; PERFORMANCE;

D O I：

10.1021/jp9017184

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 view that the theoretical capacity of spinel Li4Ti5O12 is limited by the number of available octahedral sites to accommodate lithium ions is debated. Combining the electrochemical and XRD results with the crystal structure of Li4Ti5O12, we demonstrate the corresponding reaction mechanism of the low-potential intercalation behavior of Li4Ti5O12 and modify the classical viewpoint on the theoretical capacity of Li4Ti5O12. The theoretical capacity of Li4Ti5O12 is limited by the number of tetravalent titanium ions, but not the octahedral or tetrahedral sites to accommodate lithium ions in the voltage range of 2.5 to 0.01 V, corresponding to 293 mAhg(-1), but not 175 mAhg(-1).

引用

页码：6324 / 6326

页数：3

共 17 条

[1] The plastic-crystalline phase of succinonitrile as a universal matrix for solid-state ionic conductors [J].

Alarco, PJ ;

Abu-Lebdeh, Y ;

Abouimrane, A ;

Armand, M .

NATURE MATERIALS, 2004, 3 (07) :476-481

[2] Batteries - The battery: Not yet a terminal case [J].

Alper, J .

SCIENCE, 2002, 296 (5571) :1224-1226

[3] SYNTHESIS AND CRYSTALLOGRAPHIC STUDY OF NEW SOLID SOLUTION OF SPINELLE LI1+XTI2-XO4 LESS THAN OR EQUAL TO X LESS THAN OR EQUAL TO O,333 [J].

DESCHANV.A ;

RAVEAU, B ;

SEKKAL, Z .

MATERIALS RESEARCH BULLETIN, 1971, 6 (08) :699-&

[4] Study on the effect of Li doping in spinel Li4+xTi5-xO12 (0 ≤ x ≤ 0.2) materials for lithium-ion batteries [J].

Ge, Hao ;

Li, Ning ;

Li, Deyu ;

Dai, Changsong ;

Wang, Dianlong .

ELECTROCHEMISTRY COMMUNICATIONS, 2008, 10 (07) :1031-1034

[5] Electrochemical characteristics of spinel Li4Ti5O12 discharged to 0.01 V [J].

Ge, Hao ;

Li, Ning ;

Li, Deyu ;

Dai, Changsong ;

Wang, Dianlong .

ELECTROCHEMISTRY COMMUNICATIONS, 2008, 10 (05) :719-722

[6] THE SUPERCONDUCTOR-SEMICONDUCTOR TRANSITION IN THE LI1+XTI2-XO4 SPINEL SYSTEM [J].

HARRISON, MR ;

EDWARDS, PP ;

GOODENOUGH, JB .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1985, 52 (03) :679-699

[7] Preparation and cycling performance of Al3+ and F- co-substituted compounds Li4AlxTi5-xFyO12-y [J].

Huang, SH ;

Wen, ZY ;

Gu, ZH ;

Zhu, XJ .

ELECTROCHIMICA ACTA, 2005, 50 (20) :4057-4062

[8] Preparation and electrochemical performance of Ag doped Li4Ti5O12 [J].

Huang, SH ;

Wen, ZY ;

Zhu, XJ ;

Gu, ZH .

ELECTROCHEMISTRY COMMUNICATIONS, 2004, 6 (11) :1093-1097

[9]

Nagaura T., 1990, Prog. batteries sol. cells, V9, P209

[10] Materials science - Toward flexible batteries [J].

Nishide, Hiroyuki ;

Oyaizu, Kenichi .

SCIENCE, 2008, 319 (5864) :737-738

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