Enhanced Li-Transport on the Nanoscale: TiO2-B Nanowires

被引:7
作者
Koudriachova, M. V. [1 ]
机构
[1] UCL, London WC1E 6BT, England
关键词
TiO2-B; nanowires; electrode materials; Li-batteries; diffusion; ab initio simulations; LITHIUM INTERCALATION; INSERTION;
D O I
10.4028/www.scientific.net/JNanoR.11.159
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The origin of enhanced intercalation of Li-ions into TiO2-B is being examined using first principles density functional calculations. Using advanced simulation techniques, we built a comprehensive description of Li-intercalation into TiO2-B and demonstrate that it acts as a capacitor at [Li]/[Ti] <= 0.5, while at higher concentrations the insertion capacity is limited by Li self-diffusion.
引用
收藏
页码:159 / 164
页数:6
相关论文
共 18 条
[1]   Building better batteries [J].
Armand, M. ;
Tarascon, J. -M. .
NATURE, 2008, 451 (7179) :652-657
[2]   TiO2-B nanowires [J].
Armstrong, AR ;
Armstrong, G ;
Canales, J ;
Bruce, PG .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (17) :2286-2288
[3]   TiO2(B) nanowires as an improved anode material for lithium-ion batteries containing LiFePO4 or LiNi0.5Mn1.5O4 cathodes and a polymer electrolyte [J].
Armstrong, Graham ;
Armstrong, A. Robert ;
Bruce, Peter G. ;
Reale, Priscilla ;
Scrosati, Bruno .
ADVANCED MATERIALS, 2006, 18 (19) :2597-+
[4]   Structural evolution during the reaction of Li with nano-sized rutile type TiO2 at room temperature [J].
Baudrin, E. ;
Cassaignon, S. ;
Koesch, M. ;
Jolivet, J. -P. ;
Dupont, L. ;
Tarascon, J. -M. .
ELECTROCHEMISTRY COMMUNICATIONS, 2007, 9 (02) :337-342
[5]   PHYSICAL-PROPERTIES OF BRONZE MXTIO2(B) [J].
BROHAN, L ;
MARCHAND, R .
SOLID STATE IONICS, 1983, 9-10 (DEC) :419-424
[6]   Nanomaterials for rechargeable lithium batteries [J].
Bruce, Peter G. ;
Scrosati, Bruno ;
Tarascon, Jean-Marie .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (16) :2930-2946
[7]   THE SOFT CHEMICAL SYNTHESIS OF TIO2 (B) FROM LAYERED TITANATES [J].
FEIST, TP ;
DAVIES, PK .
JOURNAL OF SOLID STATE CHEMISTRY, 1992, 101 (02) :275-295
[8]   Mechanism of lithium intercalation in titanates [J].
Koudriachova, Marina V. .
JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2010, 14 (04) :549-553
[9]   Effect of diffusion on lithium intercalation in titanium dioxide [J].
Koudriachova, MV ;
Harrison, NM ;
de Leeuw, SW .
PHYSICAL REVIEW LETTERS, 2001, 86 (07) :1275-1278
[10]   Lithium intercalation in TiO2 modifications [J].
Nuspl, G ;
Yoshizawa, K ;
Yamabe, T .
JOURNAL OF MATERIALS CHEMISTRY, 1997, 7 (12) :2529-2536