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Acta Physico-Chimica Sinica  2007, Vol. 23 Issue (12): 1954-1957    DOI: 10.3866/PKU.WHXB20071223
Note     
A Novel Cathode Material Lithium Vanadium Phosphate Synthesized by Liquid-phase Sphericizing Granulation
HOU Chun-Ping; YUE Min
Shenzhen BTR New Energy Materials Inc., Shenzhen 518106, Guangdong Province, P. R. China
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Abstract  A novel cathode material lithium vanadium phosphate with the microstructure of submicro-particles aggregate was synthesized by liquid-phase sphericizing granulation. XRD pattern showed that the crystal structure of Li3V2(PO4)3 was monoclinic and belonged to P21/n space group. SEM revealed that the diameters of the particle and aggregated particle were in submicron range and about 10 滋m, respectively, with a narrowdistribution. The electrochemical testing showed that the obtained Li3V2(PO4)3 had the maximum discharge capacity of 126.67 mAh·g-1 and initial coulombic efficiency of 95.6%in the range of 3.0-4.3 V (vs Li/Li+), and 170.47mAh·g-1 and 97.5%in the range of 3.0-4.9 V (vs Li/Li+) at a density of 55.6 mA·g-1, respectively. Moreover, the material had a better cycle stability.

Key wordsLi-ion batteries      Cathode material      Lithiumvanadiumphosphate      Liquid-phase method      Sphericizing granulation     
Received: 17 September 2007      Published: 07 November 2007
MSC2000:  O646  
Corresponding Authors: HOU Chun-Ping     E-mail: hugohou@btrchina.com
Cite this article:

HOU Chun-Ping; YUE Min. A Novel Cathode Material Lithium Vanadium Phosphate Synthesized by Liquid-phase Sphericizing Granulation. Acta Physico-Chimica Sinica, 2007, 23(12): 1954-1957.

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http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20071223     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2007/V23/I12/1954

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