Browse > Article
http://dx.doi.org/10.5229/JKES.2006.9.3.107

Synthesis of Silicon-Carbon by Polymer Coating and Electrochemical Properties of Si-C|Li Cell  

Doh, Chil-Hoon (Korea Electrotechnology Research Institute)
Jeong, Ki-Young (Korea Electrotechnology Research Institute)
Jin, Bong-Soo (Korea Electrotechnology Research Institute)
An, Kay-Hyeok (BK21 Physics Div., Sungkyunkwan University)
Min, Byung-Chul (Dept. of Environmental Chem., Changwon College of Korea Polytechnic VII)
Choi, Im-Goo (Sodiff Advanced Materials Co., Ltd.)
Park, Chul-Wan (Sodiff Advanced Materials Co., Ltd.)
Lee, Kyeong-Jik (Sodiff Advanced Materials Co., Ltd.)
Moon, Seong-In (Korea Electrotechnology Research Institute)
Yun, Mun-Soo (Korea Electrotechnology Research Institute)
Publication Information
Journal of the Korean Electrochemical Society / v.9, no.3, 2006 , pp. 107-112 More about this Journal
Abstract
Si-C composites were prepared by the carbonization of silicon powder covered by polyaniline(PAn). Physical and electrochemical properties of the Si-C composites were characterized by the particle size analysis, X-ray diffraction technique, scanning electron microscope, and electrochemical test of battery. The average particle size of the Si was increased by the coating of PAn and somewhat reduced by the carbonization to give silicone-carbon composites. XRD analysis' results were confirmed co-existence of crystalline silicon and amorphous-like carbon. SEM photos showed that the silicon particle were well covered with carbonacious materials depend on the PAn content. Si-C|Li cells were fabricated using the Si-C composites and were tested using the galvanostatic charge-discharge test. Si-C|Li cells gave better electrochemical properties than that of Si|Li cell. Si-C|Li cell using the Si-C from HCl undoped PAn Precursor showed better electrochemical properties than that from HCl doped PAn Precursor. Using the electrolyte containing FEC as an additive, the initial discharge capacity was increased. After that the galvanostatic charge-discharge test with the GISOC(gradual increasing of the state of charge) condition was carried out. Si-C(Si:PAn:50:50 wt. ratio)|Li cell showed 414 mAh/g of the reversible specific capacity, 75.7% of IIE(initial intercalation efficiency), 35.4 mAh/g of IICs(surface irreversible specific capacity).
Keywords
Lithium battery; Anode; Silicon; Carbon;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 C. H. Doh. B. S. Jin, C. W. Park, S. I. Moon, and M. S. Yun, 'A Study on the Initial Irreversible Capacity of Lithium Intercalation Using Gradually Increasing State of Charge', J. of KlEE., 3-C, 189 (2003)   과학기술학회마을
2 C. H. Doh. C. W. Park, B. S. Jin, S. I. Moon, and M. S. Yun, 'A Study on the Electrochemical Properties of Carbon Nanotube Anodes Using a Gradual Increasing State of Charge Method', J. of KlEE., 4-C, 21 (2004)   과학기술학회마을
3 C. H. Doh, H. S. Kim, S. I. Moon, 'A study on the irreversible capacity of initial dopinglundoping of lithium into carbon', J. of Power Sources, 101, 96 (2001)   DOI   ScienceOn
4 Kim Kihoshita, 'CARBON', John Wiley & Sons, New York, p. 60, (1988)
5 P. Poizot, S Larulle, S. Grugeon, L. Dupont, J. M. Tarascon, 'Nanosized transition-metal oxides as negative-electrode materials for lithium-ion batteries', Nature, 407, 496 (2000)   DOI   ScienceOn
6 C. H. Doh, N. Kalaiselvi, C. W. Park, B. S. Jin, S. I. Moon, M. S. Yun, 'Synthesis and electrochemical characterization of novel high capacity Si3?xFexN4 anode for rechargeable lithium batteries', Electrochemistry Communications, 6, 965 (2004)   DOI   ScienceOn
7 B. S. Jin, C. H. Doh, S. I. Moon, M. S. Yun, J. K. Jeong, H. D. Nam, and H. G Park, 'Characteristics of MCMB Anode with VGCF As a Conducting Agent for LPB', J. of Korean Electrochemical Society, 7, 143 (2004)   DOI   ScienceOn
8 C. Berthier, W. Gorecki, M. Minier, M. B. Armand, J. M. Chabagno, and P. Rigaud, 'Microscopic investigation of ionic conductivity in alkali metal salts-poly(ethylene oxide) adducts', Solid State lonics, 11(1), 91 (1983)   DOI   ScienceOn
9 M. A. Ratner and D. F. Shriver, 'Ion transport in solvent-free polymers', Chemical Reviews, 88, 109 (1988)   DOI   ScienceOn
10 D. G. H. Ballard, P. Cheshire, T. S. Mann, and J. E. Przeworski, 'Ionic conductivity in organic solids derived from amorphous macromolecules', Macromolecules, 23(5), 1256 (1990)   DOI
11 G.X. Wang, Y Chen, K. Konstantinov, M. Lindsay, H. K. Liu, S. X. Dou, 'Investigation of cobalt oxides as anode materials for Li-ion batteries', J. of Power Sources, 109, 142 (2002)   DOI   ScienceOn
12 L. Y. Beaulieu, S. D. Beattie, T. D. Haichard, and J. R. Dhan, 'The Electrochemical Reaction of Lithium with Tin Studied By In Situ AFM', J. Electrochemical Society, 150, A419 (2003)   DOI   ScienceOn