Effect of Conductive Additives on the Structural and Electrochemical Properties of Li4Ti5O12 Spinel

被引：4

作者：

Park, Jae-Hwan ^{[1
]}

Lee, Seongsu ^{[2
]}

Kim, Sung-Soo ^{[1
]}

Kim, Jong-Huy ^{[3
]}

机构：

[1] Chungnam Natl Uniers, Grad Sch Green Energy Technol, Taejon 305764, South Korea

[2] Korea Atom Energy Res Inst, Div Neutron Sci, Taejon 305353, South Korea

[3] Korea Inst Energy Res, Taejon 305343, South Korea

来源：

BULLETIN OF THE KOREAN CHEMICAL SOCIETY | 2012年 / 33卷 / 12期

关键词：

Lithium ion batteries; Lithium titanate; Carbon additive effect; Neutron diffraction; INSERTION; 2-PHASE; SAFETY; SIZE;

D O I：

10.5012/bkcs.2012.33.12.4059

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The effect of a conductive agent on the structural and electrochemical properties of Li4Ti5O12(LTO) spinel was investigated through neutron diffraction during Li intercalation and electrochemical measurements. The charging process of LTO is known as transformation of the white (Li-3)(8a)[LiTi5](16d)O-12 into a dark-colored (Li3-X)(8a)[LiX+Y](16c)[LiTi5](16d)O-12 by incorporating the inserted Li into octahedral 16c sites, and the Li in tetrahedral 8a sites shifted to 16c sites. The occupancy of the tetrahedral 8a site varied with the existence of carbon in the electrode. Without carbon, the lattice parameter and cell volume of LTO decreased more notably than in the carbon-containing LTO electrode during Li insertion process. These phenomena might be attributed that the Li occupancy of the tetrahedral 8a of the LTO electrode without carbon was less than that of the carbon-containing LTO electrode.

引用

页码：4059 / 4062

页数：4

共 12 条

[1] On the safety of the Li4Ti5O12/LiMn2O4 lithium-ion battery system [J].

Belharouak, I. ;

Sun, Y.-K. ;

Lu, W. ;

Amine, K. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2007, 154 (12) :A1083-A1087

[2] Size Effects in the Li4+xTi5O12 Spinel [J].

Borghols, W. J. H. ;

Wagemaker, M. ;

Lafont, U. ;

Kelder, E. M. ;

Mulder, F. M. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (49) :17786-17792

[3] 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

[4] Li insertion into Li4Ti5O12 p(Spinel) -: Charge capability vs. particle size in thin-film electrodes [J].

Kavan, L ;

Procházka, J ;

Spitler, TM ;

Kalbác, M ;

Zukalová, MT ;

Drezen, T ;

Grätzel, M .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (07) :A1000-A1007

[5] Structure, ionic conduction, and phase transformations in lithium titanate Li4Ti5O12 [J].

Leonidov, IA ;

Leonidova, ON ;

Perelyaeva, LA ;

Samigullina, RF ;

Kovyazina, SA ;

Patrakeev, MV .

PHYSICS OF THE SOLID STATE, 2003, 45 (11) :2183-2188

[6] ZERO-STRAIN INSERTION MATERIAL OF LI[LI1/3TI5/3]O-4 FOR RECHARGEABLE LITHIUM CELLS [J].

OHZUKU, T ;

UEDA, A ;

YAMAMOTO, N .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1995, 142 (05) :1431-1435

[7] Ab initio studies of structural and electronic properties of Li4Ti5O12 spinel [J].

Ouyang, C. Y. ;

Zhong, Z. Y. ;

Lei, M. S. .

ELECTROCHEMISTRY COMMUNICATIONS, 2007, 9 (05) :1107-1112

[8]

Rodriguez-Carvajal J., 1993, Physica B, V55, P192

[9] Evidence of two-phase formation upon lithium insertion into the Li1.33Ti1.67O4 spinel [J].

Scharner, S ;

Weppner, W ;

Schmid-Beurmann, P .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (03) :857-861

[10] Electrochemical Kinetics and Safety of 2-Volt Class Li-Ion Battery System Using Lithium Titanium Oxide Anode [J].

Takami, Norio ;

Inagaki, Hiroki ;

Kishi, Takashi ;

Harada, Yasuhiro ;

Fujita, Yumi ;

Hoshina, Keigo .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2009, 156 (02) :A128-A132

← 1 2 →