Effect of Preparation Condition on Phase Behavior and Structure of Spinel LiMn2O4

Chem. J. Chinese Universities ›› 2002, Vol. 23 ›› Issue (8): 1462.

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Effect of Preparation Condition on Phase Behavior and Structure of Spinel LiMn₂O₄

GONG Jie^1,2, WANG Chun-Zhong¹, LIU Wei¹, YANG Jing-Hai^1,2, WEI Ying-Jin¹, ZONG Zhan-Guo², CHEN Gang¹

1. Key Laboratory of Automobile Materials, Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130023, China;
2. Institute of Condensed State Physics, Jilin Normal University, Siping 136000, China

Received:2001-08-02 Online:2002-08-24 Published:2002-08-24

Abstract

Abstract: Mixtures of LiNO₃ and Mn₂O₃, with different n(Li)/n(Mn) ratios[x=n(Li): n(Mn)=0.50, 0.52, 0.54, 0.58, 0.62 and 070], were sintered at 700 ℃. It is found that materials with x ratio between₀ 52 and 0.70 exhibit a single phase spinel structure. Lattice constant decreases with the increase of x value. The mixture of LiNO₃ and Mn₂O₃, with x =0.50, was sintered at different temperatures(300, 400, 500, 600 and 700 ℃). The results show that the materials sintered at temperature lower than 600℃, additional phase can be removed via over adding the lithium to extend x value larger than 0.52. Lattice constant increases with increasing the sintering temperature.

Key words: Spinel type structure, Lattice patameters, Binding energy

CLC Number:

O614

TrendMD:

GONG Jie, WANG Chun-Zhong, LIU Wei, YANG Jing-Hai, WEI Ying-Jin, ZONG Zhan-Guo, CHEN Gang. Effect of Preparation Condition on Phase Behavior and Structure of Spinel LiMn₂O₄[J]. Chem. J. Chinese Universities, 2002, 23(8): 1462.

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Effect of Preparation Condition on Phase Behavior and Structure of Spinel LiMn₂O₄

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