Effects of Different Carbon Sources on Performance of LiFePO4/C Composite Material

Chao Yang; Yong Mei Li; Shan Liu; Yao Chun Yao

doi:10.4028/www.scientific.net/AMR.625.218

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 625Effects of Different Carbon Sources on Performance...

Effects of Different Carbon Sources on Performance of LiFePO₄/C Composite Material

Abstract:

Two kinds of carbon sources and their mixtures with different proportions were employed to prepare the LiFePO4/C composite material by high temperature solid state method. Precursor materials with different carbon sources were prepared by planetary ball-milling without dispersant. Results showed that the various precursors had different effect on the uniformity of the mixing and the crystallinity of the LiFePO4/C positive material. The mixed carbon sources had better effects on the performance of positive material. When the ratio of sucrose and citric acid was 1:3 (75% citric acid), the discharge capacity of LiFePO4/C composite material was 144.1 mAh/g at the discharge rate of 0.2C. Its high-rate performance was also better.

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Periodical:

Advanced Materials Research (Volume 625)

Pages:

218-221

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.625.218

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Online since:

December 2012

Authors:

Chao Yang, Yong Mei Li, Shan Liu, Yao Chun Yao

Keywords:

Carbon Source, Citric Acid (CA), LiFePO₄/C Composite Material, Lithium-Ion Battery, Sucrose

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