Myung–Hoon Kima, Young–Jae Kima, Jung–Yeul Kimb, You–Ki Leeb, J.A. Ascencioc, and Jong–Wan Parka,
a Division of Materials Science and Engineering, Hanyang University, 17 Haengdang–Dong, Seongdong–Gu, Seoul 133–791, Korea.
e mail:myung97@ihanyang.ac.kr , kim0jae@ihanyang.ac.kr
b Division of Semiconductor and Electronics Engineer, Uiduk University, 50 Yukum–Li Kangdong–Myun, Kyoungju–Si, Koungsangbuk–Do, 780–713 Korea.
e mail: jykim@uu.ac.kr, leeyk@uu.ac.kr
c Programa de Investigación y Desarrollo de Ductos, Instituto Mexicano del Petróleo.
e mail: jascencio@yahoo.com ]]>
* Corresponding Author:
e–mail : jwpark@hanyang.ac.kr,
Tel : +82–2–2220–0386, Fax: +82–2–2298–2850
Recibido el 9 de junio de 2006
Aceptado el 27 de septiembre de 2006
Abstract
]]> We have prepared the Si/Mo multilayer by alternate deposition with a multi–gun rf/dc magnetron sputtering system. A current collector was Cu foil that had a rough surface. Pre–treatment with plasma on the surface was performed in order to improve adhesion between an electrode and substrate and to remove contamination on the surface. The structural and electrochemical characteristics of yhe Si/Mo multilayer were investigated. The initial capacity of the Si thin film rapidly degraded after 40 cycles, whereas the multilayer maintained more than 90 % of the initial capacity (2653 mAhg–1) after 100 cycles.Keywords: Silicon; molybdenum, multilayer; anode; Li ion secondary battery.
Resumen
Se prepararon las multiples capas de Si/Mo por deposición alternada mediante un sistema de erosión catódica de magnetrón rf/dc de múltiples canones. Un colector de corriente era la lámina de Cu de superficie áspera. Se realizó el pre–tratamiento con plasma en la superficie para mejorar la propiedad de adherencia entre electrodo y sustrato y para eliminar contaminación de la superficie. Se investigaron las características estructurales y electroquímicas de las multicapas de Si/Mo. La capacidad inicial de la película delgada de Si degrado rápidamente después de 40 ciclos mientras que las multicapas mantuvieron más del 90% de la capacidad inicial (2653 mAhg-1) después de 100 ciclos.
Descriptores: Silicio; molibdeno; multicapas; anodo; batería secundaria Li–ion.
PACS: 82.45.–h; 82.47.Aa
DESCARGAR ARTÍCULO EN FORMATO PDF
]]>References
1. T. Ohzuku, Y. Iwakashi, and K. Sawai, J. Electrochem. Soc. 140 (1993) 2490. [ Links ]
2. S. Megahed and B. Scrosati, J. Power Sources 51 (1994) 79. [ Links ]
3. C.J. Wen and R.A. Huggins, J. Solid State Chem. 37 (1976) 271. [ Links ]
4. J.O. Besenhard, J. Yang, and M. Winter, J. Power Sources 68 (1997) 87. [ Links ]
5. B.A. Boukamp, G.C. Lesh, and R.A. Huggins, J. Electrochem. Soc. 128 (1981) 725. [ Links ]
6. R.A. Huggins and B.A. Boukamp, US patent #4,436,796 (1984). [ Links ]
7. J. Yang, M. Winter, and J.O. Besenhard, Solid State Ionics 90 (1996) 281. [ Links ]
8. W.J. Weydanz, M. Wohlfahrt–Mehrens, and R.A. Huggins, J. Power Sources 81–82 (1997) 237. [ Links ]
9. G.X. Wang et al., J. Power Sources 88 (2000) 278. [ Links ]
10. Il–seok Kim, P.N. Kumta, and G.E. Blomgren, Electrochem. Solid–State Lett. 3 (2000) 493. [ Links ]
11. H. Kim, J. Choi, H.–J. Sohn, and T. Kang, J. Electrochem. Soc. 14 (1999) 4401. [ Links ]
12. T. Moriga, K. Watanabe, D. Tsuji, S. Massaki, and L. Nakabayahsi, J. Solid State Chem. 153 (2000) 386. [ Links ]
13. G.A. Roberts, E.J. Cairns, and J.A. Reimers, J. Power Sources 110 (2002) 424. [ Links ]
14. M. Yoshio et al., J. Electrochem. Soc. A 149 (2002) 1598. [ Links ]
15. J.R. Dahn et al., Thin Solid Films 111 (2002) 408. [ Links ]
16. Y.–L. Kim et al., Electrochimica Acta 00 (2003) 1. [ Links ]
17. K.L. Lee, J.Y Jung, S.W. Lee, H.S. Moon, and J.W. Park, J. Power Sources 129 (2004) 270. [ Links ]
18. T. Motooka and O.W. Holland, Appl. Phys. Lett. 58 (1991) 2360; [ Links ]Electrochem. Solid–state lett. A 6 (2003) 198. [ Links ]
19. Tsutomu Takamura, Shigeki Ohara, Makiko Uehara, and Junji Suzuki, Kyoichi Sekine, J. Power Sources 129 (2004) 96. [ Links ]
20. R.A. Huggins, J. Power Sources 81–82 (1999) 13. [ Links ]
21. J.O. Besenhard, J. Yang, and M. Winter, J. Power Sources 68 (1997) 87. [ Links ] ]]>