Electrochemical studies of nanoncrystalline Mg2Si thin film electrodes prepared by pulsed laser deposition

被引:82
作者
Song, SW [1 ]
Striebel, KA
Reade, RP
Roberts, GA
Cairns, EJ
机构
[1] Ernest Orlando Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA
关键词
D O I
10.1149/1.1527937
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Electrochemically active thin films of Mg2Si in various film thicknesses of 30-380 nm have been prepared with the pulsed laser deposition technique. The thinnest film of 30 nm showed a highly stable cycling behavior at 0.1-1.0 V vs. Li, delivering capacity greater than 2000 mAh/g for more than 100 cycles. Though the film morphology became remarkably rougher with cycling, the films showed good stability. However, the first cycle irreversible capacity loss increased with film thickness. Therefore, lithium adsorption/desorption reaction forming Li-Si alloy at the Si-rich film surface is suggested as one of the sources of the large capacity of the 30 nm film. The superior capacity retention, when compared to porous electrodes of this alloy, may be attributed to a limited structural volume change in the two-dimensional film, shorter lithium diffusion path and enhanced conductivity from stainless steel substrate. The goals of this study are to promote the emerging need of thin film anodes for all solid-state microbatteries and clarify the capacity failure of powder intermetallic anodes for rechargeable lithium batteries. (C) 2002 The Electrochemical Society.
引用
收藏
页码:A121 / A127
页数:7
相关论文
共 41 条
  • [21] Li H, 1998, ELECTROCHEM SOLID ST, V1, P241
  • [22] Li NC, 2000, ELECTROCHEM SOLID ST, V3, P316, DOI 10.1149/1.1391134
  • [23] Mechanically alloyed Sn-Fe(-C) powders as anode materials for Li-ion batteries -: III.: Sn2Fe:SnFe3C active/inactive composites
    Mao, O
    Dahn, JR
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (02) : 423 - 427
  • [24] Reaction mechanism of metal silicide Mg2Si for Li insertion
    Moriga, T
    Watanabe, K
    Tsuji, D
    Massaki, S
    Nakabayashi, I
    [J]. JOURNAL OF SOLID STATE CHEMISTRY, 2000, 153 (02) : 386 - 390
  • [25] Charge-discharge performance of electron-beam-deposited tin oxide thin-film electrodes
    Nam, SC
    Kim, YH
    Cho, WI
    Cho, BW
    Chun, HS
    Yun, KS
    [J]. ELECTROCHEMICAL AND SOLID STATE LETTERS, 1999, 2 (01) : 9 - 11
  • [26] RESONANT RAMAN-SCATTERING IN II-IV SEMICONDUCTORS MG2SI, MG2GE, AND MG2SN
    ONARI, S
    CARDONA, M
    [J]. PHYSICAL REVIEW B, 1976, 14 (08): : 3520 - 3531
  • [27] ROBERTS GA, IN PRESS J POWER SOU
  • [28] Cyclic voltammetry of pulsed laser deposited LixMn2O4 thin films
    Rougier, A
    Striebel, KA
    Wen, SJ
    Cairns, EJ
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1998, 145 (09) : 2975 - 2980
  • [29] Characterization of pulsed laser-deposited LiMn2O4 thin films for rechargeable lithium batteries
    Rougier, A
    Striebel, KA
    Wen, SJ
    Richardson, TJ
    Reade, RP
    Cairns, EJ
    [J]. APPLIED SURFACE SCIENCE, 1998, 134 (1-4) : 107 - 115
  • [30] Synthesis and anode behavior of lithium storage intermetallic compounds with various crystallinities
    Sakaguchi, H
    Honda, H
    Esaka, T
    [J]. JOURNAL OF POWER SOURCES, 1999, 81 : 229 - 232