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Citation: 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 LiNi_xMn_2-xO₄[J]. Acta Physico-Chimica Sinica, ;2007, 23(0): 26-30. doi: 10.3866/PKU.WHXB2007Supp07 shu

Synthesis Mechanisms and Properties of Cathode Material LiNi_xMn_2-xO₄

1.
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

Available Online: 4 January 2008

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.
- Cathode material; LiNixMn2-xO4; Synthesis mechanism; Property
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沈阳化工大学材料科学与工程学院沈阳 110142

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Synthesis Mechanisms and Properties of Cathode Material LiNixMn2-xO4

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通讯作者: 陈斌, bchen63@163.com

Synthesis Mechanisms and Properties of Cathode Material LiNi_xMn_2-xO₄