| Autor: |
Xue Yong Wang, Yan Jie Zhang, Yang Gao |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
Advanced Materials Research. :472-475 |
| ISSN: |
1662-8985 |
| DOI: |
10.4028/www.scientific.net/amr.631-632.472 |
| Popis: |
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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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