Ex-situ depth-sensing indentation measurements of electrochemically produced Si-Li alloy films

被引：127

作者：

Hertzberg, Benjamin ^{[1
]}

Benson, Jim ^{[1
]}

Yushin, Gleb ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2011年 / 13卷 / 08期

基金：

美国国家科学基金会;

关键词：

Anode; Alloy; Lithium; Silicon; Modulus; Hardness; ANODES; ELECTRODES;

D O I：

10.1016/j.elecom.2011.05.011

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We report for the first time ex-situ measurements of the Young's modulus and hardness of Si and Si-Li alloy thin film electrodes at various stages of lithium insertion via depth-sensing indentation experiments. Lithium is electrochemically inserted into the Si electrode, after which its mechanical properties are investigated in an anoxic environment. The Young's modulus was found to decrease from an initial value of 92 GPa for pure Si to 12 GPa at full lithium insertion (Li15Si4). The hardness changes from an initial value of 5 GPa for Si to 1.5 GPa for Li15Si4. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：818 / 821

页数：4

共 19 条

[1] Real Space Mapping of Li-Ion Transport in Amorphous Si Anodes with Nanometer Resolution [J].

Balke, Nina ;

Jesse, Stephen ;

Kim, Yoongu ;

Adamczyk, Leslie ;

Tselev, Alexander ;

Ivanov, Ilia N. ;

Dudney, Nancy J. ;

Kalinin, Sergei V. .

NANO LETTERS, 2010, 10 (09) :3420-3425

[2] Si electrodes for li-ion batteries - A new way to look at an old problem [J].

Beattie, S. D. ;

Larcher, D. ;

Morcrette, M. ;

Simon, B. ;

Tarascon, J. -M. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2008, 155 (02) :A158-A163

[3] Key Parameters Governing the Reversibility of Si/Carbon/CMC Electrodes for Li-Ion Batteries [J].

Bridel, J. -S. ;

Azais, T. ;

Morcrette, M. ;

Tarascon, J. -M. ;

Larcher, D. .

CHEMISTRY OF MATERIALS, 2010, 22 (03) :1229-1241

[4] High-performance lithium battery anodes using silicon nanowires [J].

Chan, Candace K. ;

Peng, Hailin ;

Liu, Gao ;

McIlwrath, Kevin ;

Zhang, Xiao Feng ;

Huggins, Robert A. ;

Cui, Yi .

NATURE NANOTECHNOLOGY, 2008, 3 (01) :31-35

[5] Analysis of Lithium Insertion/Deinsertion in a Silicon Electrode Particle at Room Temperature [J].

Chandrasekaran, Rajeswari ;

Magasinski, Alexandre ;

Yushin, Gleb ;

Fuller, Thomas F. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2010, 157 (10) :A1139-A1151

[6] Effect of phase transformations on the shape of the unloading curve in the nanoindentation of silicon [J].

Domnich, V ;

Gogotsi, Y ;

Dub, S .

APPLIED PHYSICS LETTERS, 2000, 76 (16) :2214-2216

[7] Deformations in Si-Li Anodes Upon Electrochemical Alloying in Nano-Confined Space [J].

Hertzberg, Benjamin ;

Alexeev, Alexander ;

Yushin, Gleb .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (25) :8548-+

[8] Nano- and bulk-silicon-based insertion anodes for lithium-ion secondary cells [J].

Kasavajjula, Uday ;

Wang, Chunsheng ;

Appleby, A. John .

JOURNAL OF POWER SOURCES, 2007, 163 (02) :1003-1039

[9] Superior Lithium Electroactive Mesoporous Si@Carbon Core-Shell Nanowires for Lithium Battery Anode Material [J].

Kim, Hyesun ;

Cho, Jaephil .

NANO LETTERS, 2008, 8 (11) :3688-3691

[10] Three-Dimensional Porous Silicon Particles for Use in High-Performance Lithium Secondary Batteries [J].

Kim, Hyunjung ;

Han, Byunghee ;

Choo, Jaebum ;

Cho, Jaephil .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (52) :10151-10154

← 1 2 →