Grain growth kinetics of LiMn2O4 nanocrystals during calcining process

LiMn 2 O 4 nanocrystal was synthesized by coprecipitation using Mn(CH 3 COO) 2 and LiOH as raw materials. Samples were characterized by thermo gravimetric/differential scanning calorimetry, X-ray diffraction and transmission electron microscope. Effort of calcination temperatures (600, 650, 700, 750...

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Bibliographic Details
Published in:Integrated ferroelectrics 2017-02, Vol.178 (1), p.35-41
Main Authors: Song, Xiao-lan, Zhang, Ying, Zhou, Yong-xin, Liu, Shi-chao, Liu, Dong-feng
Format: Article
Language:English
Subjects:
Alloys
calcination
Computer simulation
Coprecipitation
Differential scanning calorimetry
Grain growth
Grain size
Gravimetry
Heat measurement
Kinetics
kinetics model
LiMn
Nanocrystals
Raw materials
Reaction kinetics
Roasting
X-ray diffraction
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Summary:LiMn 2 O 4 nanocrystal was synthesized by coprecipitation using Mn(CH 3 COO) 2 and LiOH as raw materials. Samples were characterized by thermo gravimetric/differential scanning calorimetry, X-ray diffraction and transmission electron microscope. Effort of calcination temperatures (600, 650, 700, 750 and 800°C) on grain size of LiMn 2 O 4 was discussed. Results indicated that temperature had positive correlation with grain size. Grain growth kinetics of LiMn 2 O 4 nanocrystal was simulated with a conventional model and an isothermal model. Simulation results indicated that the isothermal model was suitable to fit with data, implying the important roles of diffusion and surface reaction.
ISSN:1058-4587
1607-8489
DOI:10.1080/10584587.2017.1322390