Effects of Different Granularity Control Methods on Morphology, Structure and Electrochemical Performance of LiFePO4/C

Cheng Lu; Lin Chen; Yun Bo Chen; Yi Jie Gu; Meng Wang; Ling Li Zuo; Hong Quan Liu; Yan Min Wang; Xian Fu Sun

doi:10.4028/www.scientific.net/AMR.893.830

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 893Effects of Different Granularity Control Methods...

Effects of Different Granularity Control Methods on Morphology, Structure and Electrochemical Performance of LiFePO₄/C

Abstract:

LiFePO₄/C materials were synthesized by spray-drying method. The particle size of the LiFePO₄/C was controlled by mechanical crushing or airflow crushing. The morphology, structure and electrochemical properties of the materials were characterized. The results show that: The smaller powder particle and better particle size distribution could be got using the two granularity control methods above. The special surface area of the material increased, the tap density decreased and the high rate performance deteriorated when the particle size of LiFePO₄/C was controlled. After the particle size of LiFePO₄/C is controlled the contacts of LiFePO₄/C and carbon will deteriorate. The special capacity of the material decreases and the rate performance deteriorates, due to the stripping of carbon.

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Periodical:

Advanced Materials Research (Volume 893)

Pages:

830-833

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.893.830

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Online since:

February 2014

Authors:

Cheng Lu*, Lin Chen, Yun Bo Chen, Yi Jie Gu, Meng Wang, Ling Li Zuo, Hong Quan Liu, Yan Min Wang, Xian Fu Sun

Keywords:

Cathode Material, Granularity Control, LiFePO₄, Lithium-Ion Battery

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