Synthesis of LiFePO4/C by Carbon Thermal Reduction Method and its Electrochemical Properties

Chao Chen; Yun Zhang; Fu Wang; Ji Zhou Zou

doi:10.4028/www.scientific.net/AMR.335-336.1364

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 335-336Synthesis of LiFePO4/C by Carbon Thermal Reduction...

Synthesis of LiFePO₄/C by Carbon Thermal Reduction Method and its Electrochemical Properties

Abstract:

LiFePO₄/C were successfully synthesized by carbon thermal reduction method at sintering temperature of 650 °C for 12h, using Li₂CO₃, FePO₄ and three organic carbon sources (citric acid, glucose and ascorbic acid) as starting materials. The crystal structure, morphology and electrochemical performances were characterized by X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM) and Charge/Discharge Test. The results showed that the sample using glucose as carbon source was shuttle type porous particles with bore diameter from 50 to 100 nm, charge/discharge test showed that the sample had not only high initial discharge capacity of 155.1mAh/g at 0.1C (17mA/g), and 144.8 mAh/g at 1C, but also excellent rate performance. Moreover, the capacities lose which was only 0.97% after 10 cycling number at 1C indicate its good cycling stability.

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Periodical:

Advanced Materials Research (Volumes 335-336)

Pages:

1364-1367

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.335-336.1364

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Online since:

September 2011

Authors:

Chao Chen, Yun Zhang, Fu Wang, Ji Zhou Zou

Keywords:

Carbon-Thermal Reduction, Cathode Material, LiFePO₄/C, Lithium-Ion Battery, Short-Time Sintering

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