Electrochemical Performance of LiFePO4/C Prepared from Different Carbon Source

Ai Fang Liu

doi:10.4028/www.scientific.net/AMR.983.238

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 983Electrochemical Performance of LiFePO4/C Prepared...

Electrochemical Performance of LiFePO₄/C Prepared from Different Carbon Source

Abstract:

Cathode material LiFePO₄/C was prepared via optimized solid state reaction and calcinations using different carbon source. The crystalline and morphology of the resultant powder was evaluated by X-Ray diffraction (XRD), scanning electronic microscope (SEM). The electrochemical performance was measured by galvanostatic charge-discharge test at 0.1C and 0.5C. The results demonstrated that the sample with layer-like stacking microstructure had the best capacity retention up to 96% after 50-cycle at 0.5C; the sample with good carbon coating using glucose as carbon source exhibited the lowest flat charge plateau and the highest flat discharge plateau, also the best storage performance at 60 oC temperature. Nevertheless, the sample with spherical-like shape and homogeneous particle size had the most capacity loss, maybe due to the increased internal resistance caused by the big interstices between the particle sizes.

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Periodical:

Advanced Materials Research (Volume 983)

Pages:

238-241

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.983.238

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Online since:

June 2014

Authors:

Ai Fang Liu*

Keywords:

Carbon Source, Lithium Iron Phosphate (LiFePO₄), Lithium-Ion Battery

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