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Acta Phys. -Chim. Sin.  2008, Vol. 24 Issue (03): 513-519    DOI: 10.3866/PKU.WHXB20080329
Note     
Synthesis of LiNi1/3Co1/3Mn1/3O2 Cathode Material by Eutectic Molten Salt LiOH-LiNO3
CHANG Zhao-Rong; CHEN Zhong-Jun; WU Feng; TANG Hong-Wei; ZHU Zhi-Hong
College of Chemistry and Environmental Science, Henan Normal University, Xinxiang 453007, Henan Province, P. R. China; College of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100080, P. R. China
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Abstract  The powder of LiNi1/3Co1/3Mn1/3O2 were prepared directly without artificial grinding and washing by a eutectic molten-salt mixture (0.38LiOH·H2O-0.62LiNO3) method. According to this method, the eutectic molten-salt mixture was self-mixed with precursor thoroughly at low temperature, and then sintered at a certain temperature. The tap-density of the powder obtained was 2.87 g·cm-3. The well-layered 琢-NaFeO2 structure and regular morphology were confirmed by X-ray diffraction (XRD) and scanning electronmicroscopy (SEM).XPSstudies showed that the predominant oxidation states of Ni, Co, andMn in the compound were 2+, 3+, and 4+, respectively. Cathodic behaviour was examined by charge-discharge cycling. The synthesized powder showed a reversible capacity of 160 mAh·g -1 at a specific current of 0.2C in the rang 3.0-4.3 V up to 50 cycles without noticeable capacity-fading.

Key wordsEutectic molten salt      Cathode material      XPS      LiNi1/3Co1/3Mn1/3O2     
Received: 07 September 2007      Published: 21 January 2008
MSC2000:  O646  
  O614  
  TM912.9  
Corresponding Authors: WU Feng     E-mail: wufeng863@vip.sina.com
Cite this article:

CHANG Zhao-Rong; CHEN Zhong-Jun; WU Feng; TANG Hong-Wei; ZHU Zhi-Hong. Synthesis of LiNi1/3Co1/3Mn1/3O2 Cathode Material by Eutectic Molten Salt LiOH-LiNO3. Acta Phys. -Chim. Sin., 2008, 24(03): 513-519.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB20080329     OR     http://www.whxb.pku.edu.cn/Y2008/V24/I03/513

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