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Synthesis and Characterization of LiFePO4/C Composite Obtained by One-Step Solid-State Reaction Using Solid PVA as Carbon Source

Published online by Cambridge University Press:  31 January 2011

Limei Yang ,
Guangchuan Liang ,
Li Wang ,
Xiaoke Zhi  and
Xiuqin Ou
Limei Yang
Affiliation:
[email protected], Institute of Power Source and Ecomaterials Science, Tianjin, China
Guangchuan Liang
Affiliation:
[email protected], Institute of Power Source and Ecomaterials Science, Tianjin, China
Li Wang
Affiliation:
[email protected], Institute of Power Source and Ecomaterials Science, Tianjin, China
Xiaoke Zhi
Affiliation:
[email protected], Institute of Power Source & Ecomaterials Science, Box1055, Hebei University of Technology, 300130, Tianjin, China, Tian Jin, 300130, China
Xiuqin Ou
Affiliation:
[email protected], Institute of Power Source and Ecomaterials Science, Tianjin, China
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Abstract

LiFePO4/C composite cathode materials were synthesized by one-step solid-state reaction using FePO4 as main raw materials and solid PVA (Polyvinyl Alcohol) as a reductive agent and carbon source. The sample was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), particle size analysis and charge-discharge test. The results indicated that the carbon generated from the pyrogenation of PVA did not affect the olivine structure of the cathode materials but considerably improved its high-rate discharge ability and cycle performance. The initial discharge capacity of the sample was 149.7, 133.1, 120.6, 93.0 mAh/g at 0.2C, 1C, 2C, 5C respectively, and the discharge capacity could reach 90 mAh/g at 5C rates after 80 cycles. It is believed that the carbon coating could lead to small particle size and high electronic conductivity of active materials, thus leading to excellent electrochemical performance of LiFePO4/C cathode materials.

Keywords

x-ray diffraction (XRD)crystallographic structurecoating
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1170: Symposium R – Materials for Renewable Energy at the Society and Technology Nexus , 2009 , 1170-R05-01
Copyright
Copyright © Materials Research Society 2009

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References

1 Mia, C.H., Zhang a, X.G., Zhaob, X.B., Li, H.L., Materials Science and Engineering B 129m, 8–13 (2006).Google Scholar
2 Shina, Ho Chul, Parka, Sung Bin, Janga, Ho, Chungb, Kyung Yoon, Chob, Won II, kimb, Chang Sam, Chob, Byung Won, Electrochimica Acta. 53, 7946–7951 (2008).Google Scholar
3 Zhuang, Dagao, Zhao, Xinbing, Xie, Jian, Tu, Jian, Zhu, Tiejun, Cao, Gaoshao, Acta Phys. -Chim. Sin. 22(7), 840–8449 (2006).Google Scholar
4 Liao, Xiao-Zhen, He, Yu-Shi, Ma, Zi-Feng, Zhang, Xiao-Ming, Wang, Liang, J. Power Sources. 174, 720–725 (2007).Google Scholar
5 Dominko, Robert, Bele, Marjan, Goupil, Jean-Michel, Gaberscek, Miran, Hanzel, Darko, Arcon, Iztok, Jamnik, Janez, Chem. Mater. 19, 2960–2969 (2007).Google Scholar
6 Luo, Shaohua, Tang, Zilong, Lu, Junbiao, Zhang, Zhongtai, Ceramics International. 34, 1349–1351 (2008).Google Scholar
7 Feya, George Ting-Kuo, Chena, Yun Geng, Kaob, Hsien-Ming, J. Power Sources. 189, 169–178 (2009).Google Scholar
8 Kima b, Do-Kyun, Hyun-Min Park, b, Su-Jin Jung, b, Yeon Uk Jeong, a, Joon-Hyung Lee, a, Kima, Jeong-Joo, J. Power Sources. 159, 237–240 (2006).Google Scholar
9 Gilman, J.W., VanderHart, D.L., Kashiwagi, T., Fire and polymers II. materials and test for hazard prevention, in: ACS Symposium Series 599, American Chemical Society, Washington, DC, August 21-26, 1994, p.161 (Chapter 11).Google Scholar
10 JiYun, Nan, Ha, Hyung-Wook, Jeong, Kyung Hee, Park, Heon-Yong, Kim, Keon, J. Power Sources. 160, 1361–1368 (2006)Google Scholar
11 Koltypin, M., Aurbach, D., Nazar, L., Ellis, B., J. Power Sources. 174, 1241–1250 (2007).Google Scholar
12 Kim, Cheol Woo, Park, Jong Suk, Lee, Kyung Sub, J. Power Sources. 163, 144–150 (2006).Google Scholar
13 Molenda, J., Stoklosa, A., Bak, T., Solid State Ionics. 36, 53–58 (1989).Google Scholar
14 Son, J.T., Kim, H.G., J. Power Sources. 147, 220–226 (2005).Google Scholar
15 Gao, Fei, Tang, Zhiyuan, Electrochimica Acta. 53, 5071–5075 (2008).Google Scholar