Micrometer-scale amorphous Si thin-film electrodes fabricated by electron-beam deposition for Li-ion batteries

被引:138
作者
Yin, JT
Wada, M
Yamamoto, K
Kitano, Y
Tanase, S
Sakai, T [1 ]
机构
[1] Natl Inst Adv Ind Sci & Technol, Ikeda, Osaka 5638577, Japan
[2] Fukuda Met Foil & Powder Co Ltd, Yamashima Ku, Kyoto 607, Japan
关键词
D O I
10.1149/1.2160429
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
A series of micrometer-scale Si thin films were fabricated by electron-beam deposition on the Cu substrate with specially treated concave-convex surface. The combined analyses involving scanning and transmission electron microscopy, selected area electron diffraction, and X-ray diffraction revealed that the deposited Si layer possessed good adhesion to the substrate and a discontinuous amorphous microstructure in which there existed large amounts of interface regions. The surface changes of the Si thin-film electrodes during Li insertion and extraction were investigated by glow discharge optical emission spectroscopy. The half-cell tests showed that these thicker films had higher capacity and more impressive cycleability relative to those reported in the literature; their cycleability could be substantially improved by limiting Li insertion depth. The full-cell tests indicated that Si films thicker than 4 mu m could provide sufficient capacity to match the standard LiCoO2 cathode with a similar to 70-mu m-thick coating layer. Such cells demonstrated small self-discharge rate as well as good cycling stability and efficiency in the long run, suggesting feasibility for potential practical applications. (c) 2006 The Electrochemical Society.
引用
收藏
页码:A472 / A477
页数:6
相关论文
共 33 条
[1]  
ARAMATA M, 2004, 45 BATT S JAP KYOT J
[2]   The electrochemical reaction of Li with amorphous Si-Sn alloys [J].
Beaulieu, LY ;
Hewitt, KC ;
Turner, RL ;
Bonakdarpour, A ;
Abdo, AA ;
Christensen, L ;
Eberman, KW ;
Krause, JL ;
Dahn, JR .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (02) :A149-A156
[3]   Colossal reversible volume changes in lithium alloys [J].
Beaulieu, LY ;
Eberman, KW ;
Turner, RL ;
Krause, LJ ;
Dahn, JR .
ELECTROCHEMICAL AND SOLID STATE LETTERS, 2001, 4 (09) :A137-A140
[4]   The reaction of lithium with Sn-Mn-C intermetallics prepared by mechanical alloying [J].
Beaulieu, LY ;
Dahn, JR .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2000, 147 (09) :3237-3241
[5]   Will advanced lithium-alloy anodes have a chance in lithium-ion batteries? [J].
Besenhard, JO ;
Yang, J ;
Winter, M .
JOURNAL OF POWER SOURCES, 1997, 68 (01) :87-90
[6]   Amorphous silicon as a possible anode material for Li-ion batteries [J].
Bourderau, S ;
Brousse, T ;
Schleich, DM .
JOURNAL OF POWER SOURCES, 1999, 81 :233-236
[7]   Highly reversible lithium storage in nanostructured silicon [J].
Graetz, J ;
Ahn, CC ;
Yazami, R ;
Fultz, B .
ELECTROCHEMICAL AND SOLID STATE LETTERS, 2003, 6 (09) :A194-A197
[8]   In situ XRD and electrochemical study of the reaction of lithium with amorphous silicon [J].
Hatchard, TD ;
Dahn, JR .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2004, 151 (06) :A838-A842
[9]  
Huggins R.A., 2000, MAT LITHIUM ION BATT, P47
[10]   Lithium alloy negative electrodes formed from convertible oxides [J].
Huggins, RA .
SOLID STATE IONICS, 1998, 113 :57-67