KINETIC STUDY OF SPINEL LiMn2O4 SYNTHESIZED BY SOLID REACTION WITH SOFT-CHEMICAL METHOD

The differential thermal analysis (DTA) curves were measured at different heating rates in flow-ing air for studying the synthesis of the spinel LiMn2O4 with Li2CO3 and MnO2. The reaction be-gan at about 503K, and finishedatabout 873K. The apparentactivation energy of Kissinger method(1-δ)1.67Coats-Redfern integral method was used to analyze the DTA curves of the samples at different heating rates, and the calculated apparent activation energy and frequency factor were diffraction (XRD) and scanning electron microscope (SEM) results shown that the synthesized LiMn2O4 possesses pure phase, regular shape and normal particle distribution.

作 者： C.Q. Xu Y.W.Tian Y.C.Zhai Z.J. Guo Z.Q. Huang   作者單位： School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China  刊 名： 金屬學(xué)報(bào)（英文版）  ISTIC EI 英文刊名： ACTA METALLURGICA SINICA  年，卷(期)： 2005 18(4)  分類號(hào)： O6  關(guān)鍵詞： lithium manganese oxides   synthesized kinetics   Kissinger method   Coats-Redfern integral method  

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