The Synthesis and SEM Characterization of Spherical LiMnPO4/C Composite Prepared by Spray Drying

Yan Jie Zhang; Xue Yong Wang; Yang Gao

doi:10.4028/www.scientific.net/AMR.631-632.472

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 631-632The Synthesis and SEM Characterization of...

The Synthesis and SEM Characterization of Spherical LiMnPO₄/C Composite Prepared by Spray Drying

Abstract:

Spherical LiMnPO₄/C composite micro-particles with different carbon content were prepared by spray drying followed by heat treatment in the range of spray drying temperature from 220°C to 270°C. The structure, morphology and electrochemical performance of the resulting spherical LiMnPO₄/C microparticles were characterized by X-ray diffraction, SEM and standard electrochemical techniques. Caron coated LiMnPO₄ could be prepared from the as-prepared powders followed by heat treatment at 600°C for 12h in a Ar+10%H2 atmosphere. The sample was identified as olivine structure of LiMnPO₄ without any impurity and spherical powders with approximately 3-5μm in primary particles size. Sample which was synthesized at 220°C SD temperature,10% carbon content showed the best electrochemical performance due to its small and homogeneous particle size diffusion, uniform carbon coating.

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Periodical:

Advanced Materials Research (Volumes 631-632)

Pages:

472-475

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.631-632.472

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Online since:

January 2013

Authors:

Yan Jie Zhang, Xue Yong Wang, Yang Gao

Keywords:

Carbon Coating, SD Temperature, Spray Drying

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