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Acta Physico-Chimica Sinica  2007, Vol. 23 Issue (Supp): 26-30    DOI: 10.3866/PKU.WHXB2007Supp07
Article     
Synthesis Mechanisms and Properties of Cathode Material LiNixMn2-xO4
CHEN Yong-Chong; XU Xing-Jun; CUI Hong-Zhi; DAI Ke-Hua; SONG Zhao-Shuang; JIANG Wei-Jun; QI Lu
Solid State Reaction and Diffusion Laboratory, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266510, Shandong Province, P. R. China; New Energy Material and Technology Laboratory, Department of Applied Chemistry, College of Chemistry &Molecular Engineering, Peking University, Beijing 100871, P. R. China; CITIC Guoan Mengguli New Energy Technology Company Ltd. (MGL), Beijing 102200, P. R. China
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Abstract  The synthesis reaction mechanisms were analyzed for the cathode materials LiNixMn2-xO4, which were synthesized by the solid-state reaction method and the wet-chemical method, respectively. XRD data indicated that a mixture precursor of Ni1Mn2O4 and Mn2O3 would be preferred for a solid solution of Ni3/4Mn1/4Mn2O4 when the solid-state reaction method was used for the material synthesis. As a result, the last product would be the mixture of NiO, LixNi1-xO and spinel LiNixMn2-xO4 (0<x<0.5) and naturally the electro-chemical performance was poor. The cathode material LiNixMn2-xO4 with excellent cycle performance was synthesized by the wet-chemical method. The first discharge capacity was 116 mAh·g-1 and the capacity after 200 cycles retains 105 mAh·g-1 on the discharge rate of 1.5C. Yet the capacity of the 4.7 V potential needs for further improvement.

Key wordsCathode material      LiNixMn2-xO4      Synthesis mechanism      Property     
Received: 01 January 1900      Published: 04 January 2008
MSC2000:  O646  
  O614  
Corresponding Authors: CHEN Yong-Chong     E-mail: matscichen@126.com
Cite this article:

CHEN Yong-Chong; XU Xing-Jun; CUI Hong-Zhi; DAI Ke-Hua; SONG Zhao-Shuang; JIANG Wei-Jun; QI Lu. Synthesis Mechanisms and Properties of Cathode Material LiNixMn2-xO4. Acta Physico-Chimica Sinica, 2007, 23(Supp): 26-30.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB2007Supp07     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2007/V23/ISupp/26

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