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Morphology Control of LiMnPO4 Cathodes by a Careful Choice of Additives

Published online by Cambridge University Press:  11 July 2013

Hung-Cuong Dinh ,
Sun-il Mho ,
Yongku Kang  and
In-Hyeong Yeo
Hung-Cuong Dinh
Affiliation:
Division of Energy Systems Research, Ajou University, Suwon 443-749, Korea
Sun-il Mho
Affiliation:
Division of Energy Systems Research, Ajou University, Suwon 443-749, Korea
Yongku Kang
Affiliation:
Division of Advanced Materials, Korea Research Institute of Chemical Technology, Daejeon 305-600, Korea
In-Hyeong Yeo
Affiliation:
Department of Chemistry, Dongguk University, Seoul 100-715, Korea
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Abstract

LiMnPO4 cathode materials of various sizes and shapes are synthesized by a hydrothermal method. In order to control the morphology of the LiMnPO4 particles, a nonionic surfactant or a cationic surfactant has employed as a key additive to the reactant solution. LiMnPO4 nanoparticles of grain-shape and rod-shape can be made with sizes between about 100 and 300 nm by adding a nonionic large polymer surfactant. Micrometer-sized LiMnPO4 particles of cuboid shape result from the reaction with a cationic surfactant. LiMnPO4 spheres of about 20 μm diameter are produced when no surfactant is added. The cathode composed of nanocrystalline (about 100 nm size) LiMnPO4 exhibited the best performance with the specific capacity of 153 mAhg-1 for the first battery cycle.

Keywords

hydrothermalmorphologyenergy storage
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1541: Symposium F – Materials for Vehicular and Grid Energy Storage , 2013 , mrss13-1541-f05-17
Copyright
Copyright © Materials Research Society 2013 

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