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Electrochemical properties of magnesium doped LiFePO4 cathode material prepared by sol–gel method
- Source :
- Materials Research Bulletin. 47:2819-2822
- Publication Year :
- 2012
- Publisher :
- Elsevier BV, 2012.
-
Abstract
- Magnesium doped Li1−2xMgxFePO4/C (x = 0.00, 0.01, 0.03, 0.05) cathode materials were synthesized by sol–gel method, and the effect of magnesium doping as well as its content on the electrochemical properties for lithium batteries was also investigated. Their morphology was studied with field emission scanning electron microscope and Li1−2xMgxFePO4 materials showed the olivine phase without impurities. The thin carbon layer of Li1−2xMgxFePO4/C was confirmed by high resolution transmission electron microscopy. The magnesium doped Li1−2xMgxFePO4/C particles were smaller than those undoped. The Li1−2xMgxFePO4/C materials showed better cycling behavior than undoped LiFePO4, especially at high C-rate in which Li0.94Mg0.03FePO4/C composition exhibited the best electrochemical properties.
- Subjects :
- Materials science
Scanning electron microscope
Magnesium
Mechanical Engineering
Doping
Inorganic chemistry
chemistry.chemical_element
Condensed Matter Physics
Cathode
law.invention
Field emission microscopy
chemistry
Chemical engineering
Mechanics of Materials
Transmission electron microscopy
law
General Materials Science
Lithium
High-resolution transmission electron microscopy
Subjects
Details
- ISSN :
- 00255408
- Volume :
- 47
- Database :
- OpenAIRE
- Journal :
- Materials Research Bulletin
- Accession number :
- edsair.doi...........eaeecb1a3cfc7c2ab9664a2aca5281ee