Thin-film lithium and lithium-ion batteries with electrochemically deposited molybdenum oxysulfide cathodes

被引:31
作者
Yufit, V
Nathan, M [1 ]
Golodnitsky, D
Peled, E
机构
[1] Tel Aviv Univ, Dept Elect Engn & Phys Elect, IL-69978 Tel Aviv, Israel
[2] Tel Aviv Univ, Sch Chem, Fac Exact Sci, IL-69978 Tel Aviv, Israel
关键词
lithium and lithium-ion thin-film batteries; MOS2 thin-film cathode; electrochemical cathode deposition;
D O I
10.1016/S0378-7753(03)00401-4
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Thin-film molybdenum oxysulfide films were deposited electrochemically on both nickel foils and nickel-coated silicon substrates, and used as cathodes in lithium battery cells that included a lithium anode and a hybride gel electrolyte (HPE) or solid polymer electrolyte (SPE). X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) characterizations indicated that the sub-micron thick MoOySz. films were amorphous, with the stoichiometry of the films varying with depth. A Li/HPE/MoOySz on nickel and nickel-coated silicon ran at i(d) = i(ch) = 100 muA/cm(2) and room temperature for 1000 charge/discharge cycles with 0.05% per cycle capacity loss and 100% Faradaic efficiency. Cells with SPE cycled at 125degreesC showed a higher per cycle capacity loss of 0.5%. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:169 / 173
页数:5
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