Synthesis of Al-Doped Lithium Manganese Oxide from Al2O3-Li2CO3-MnO2 Ternary System

Xin Yan Sun; Gang He; Jian He Hong; Ming Zhong He; Hai Feng Li

doi:10.4028/www.scientific.net/AMR.415-417.1721

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 415-417Synthesis of Al-Doped Lithium Manganese Oxide from...

Synthesis of Al-Doped Lithium Manganese Oxide from Al₂O₃-Li₂CO₃-MnO₂ Ternary System

Abstract:

Al-doped LiMn₂O₄ was synthesized by γ-Al₂O₃, which has not toxic gas decomposed in the synthesis process. Composition optimization of was carried out in view of the basic knowledge of ternary phase diagram to find the best composition of raw materials in Al₂O₃-Li₂CO₃-MnO₂ ternary system. The results showed that the Al₂O₃-Li₂O-Mn₂O₃ ternary eutectic molten compound with single spinel structure and good electrochemical performance could be formed at temperature of 800°C and the molar ratio of the starting materials in the range of n(Al₂O₃)=0~3.3 mol%, n(Li₂CO₃)=18~22 mol%, n(MnO₂)=75~82 mol%. The Al₂O₃-Li₂O-Mn₂O₃ ternary eutectic compound with the molar ratio of the starting materials of n(Al₂O₃):n(Li₂CO₃):n(MnO₂) at 0.02:0.5:1.96, showed the best electrochemical performance among all studied samples.

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Advanced Materials Research (Volumes 415-417)

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1721-1724

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.415-417.1721

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Online since:

December 2011

Authors:

Xin Yan Sun, Gang He, Jian He Hong, Ming Zhong He, Hai Feng Li

Keywords:

Cathode Material, Lithium-Ion Battery, Solid State Synthesis, Spinel

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