Performance of LiFePO4 Cathode Material Synthesized by a Low-Cost and Safe Method

Zhi Hua Li; Shan Chen; Bin Bin Xu

doi:10.4028/www.scientific.net/AMR.538-541.3003

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 538-541Performance of LiFePO4 Cathode Material...

Performance of LiFePO₄ Cathode Material Synthesized by a Low-Cost and Safe Method

Abstract:

In order to decrease the synthesis costs and resolve safety care in synthesis process of LiFePO4, a novel synthesis approach was put forward. Instead of traditional reduction atmosphere Ar/H2(95%/5%), the reducing flow produced by the breakdown of sucrose independently is used as protective atmosphere. Then, carbon-coated LiFePO4 samples were synthesized by solid-state method using Li3PO4, FePO4, Fe powder as the raw materials, and sucrose as the carbon source. The results show that the LiFePO4/C sample in this flow exhibits excellent performance after 7 hours’ sintering at 650°C. It had an initial capacity of 141.8mAh/g at 16mA/g discharge current and the coulomb efficiency reached 98.95%. Furthermore, the specific capacity was almost not fade after 20 cycles. Our experiment results prove that our approach can replace the traditional atmosphere Ar/H2, and it helps reducing the energy consumption and cost, and is expected to be commercially feasible in the future.

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Periodical:

Advanced Materials Research (Volumes 538-541)

Pages:

3003-3007

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.538-541.3003

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Online since:

June 2012

Authors:

Zhi Hua Li, Shan Chen, Bin Bin Xu

Keywords:

Atmosphere, Carbon Coated, Cost, LiFePO4/C, Lithium-Ion Battery

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