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

被引：122
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
收藏
页码：818 / 821
页数：4
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  • [1] Real Space Mapping of Li-Ion Transport in Amorphous Si Anodes with Nanometer Resolution
    Balke, Nina
    Jesse, Stephen
    Kim, Yoongu
    Adamczyk, Leslie
    Tselev, Alexander
    Ivanov, Ilia N.
    Dudney, Nancy J.
    Kalinin, Sergei V.
    [J]. NANO LETTERS, 2010, 10 (09) : 3420 - 3425
  • [2] Si electrodes for li-ion batteries - A new way to look at an old problem
    Beattie, S. D.
    Larcher, D.
    Morcrette, M.
    Simon, B.
    Tarascon, J. -M.
    [J]. 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
    Bridel, J. -S.
    Azais, T.
    Morcrette, M.
    Tarascon, J. -M.
    Larcher, D.
    [J]. CHEMISTRY OF MATERIALS, 2010, 22 (03) : 1229 - 1241
  • [4] High-performance lithium battery anodes using silicon nanowires
    Chan, Candace K.
    Peng, Hailin
    Liu, Gao
    McIlwrath, Kevin
    Zhang, Xiao Feng
    Huggins, Robert A.
    Cui, Yi
    [J]. NATURE NANOTECHNOLOGY, 2008, 3 (01) : 31 - 35
  • [5] Analysis of Lithium Insertion/Deinsertion in a Silicon Electrode Particle at Room Temperature
    Chandrasekaran, Rajeswari
    Magasinski, Alexandre
    Yushin, Gleb
    Fuller, Thomas F.
    [J]. 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
    Domnich, V
    Gogotsi, Y
    Dub, S
    [J]. APPLIED PHYSICS LETTERS, 2000, 76 (16) : 2214 - 2216
  • [7] Deformations in Si-Li Anodes Upon Electrochemical Alloying in Nano-Confined Space
    Hertzberg, Benjamin
    Alexeev, Alexander
    Yushin, Gleb
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (25) : 8548 - +
  • [8] Nano- and bulk-silicon-based insertion anodes for lithium-ion secondary cells
    Kasavajjula, Uday
    Wang, Chunsheng
    Appleby, A. John
    [J]. JOURNAL OF POWER SOURCES, 2007, 163 (02) : 1003 - 1039
  • [9] Superior Lithium Electroactive Mesoporous Si@Carbon Core-Shell Nanowires for Lithium Battery Anode Material
    Kim, Hyesun
    Cho, Jaephil
    [J]. NANO LETTERS, 2008, 8 (11) : 3688 - 3691
  • [10] Three-Dimensional Porous Silicon Particles for Use in High-Performance Lithium Secondary Batteries
    Kim, Hyunjung
    Han, Byunghee
    Choo, Jaebum
    Cho, Jaephil
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (52) : 10151 - 10154
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