Non-stoichiometric synthesis and electrochemical performance of LiFe1-xPO4/C cathode materials for lithium ion batteries-Reference-Cited by-同舟云学术

Non-stoichiometric synthesis and electrochemical performance of LiFe1-xPO4/C cathode materials for lithium ion batteries

Published:2014-04 Issue:02 Volume:07 Page:1450016
ISSN:1793-6047
Container-title:Functional Materials Letters
language:en
Short-container-title:Funct. Mater. Lett.

Author:

Hu Chenglin¹²,Wu Yuping¹,Dai Yongnian²

Affiliation:

1. New Energy and Materials Laboratory, Department of Chemistry & Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China

2. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China

Abstract

Non-stoichiometric LiFe 1-x PO 4/ C composites were synthesized by a simple sol–gel method. Different impurities were detected in the X-ray diffraction measurements with the change of Fe content. The effects of Fe -poor on the structure and electrochemical performance of LiFePO 4 were investigated. Compared with stoichiometric LiFePO 4/ C , non-stoichiometric samples show better electrochemical performance because they have smaller impedance and faster lithium ion diffusion. Among these non-stoichiometric samples, LiFe 0.94 PO 4/ C cathode delivers the highest capacity of 149 mAh g-1 at 0.2 C and 103 mAh g-1 at 5 C and no capacity loss was found after 100 full cycles.

Publisher

World Scientific Pub Co Pte Lt

Subject

General Materials Science

Link

https://www.worldscientific.com/doi/pdf/10.1142/S1793604714500167

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