Article Title

Size and shape control of LiFePO₄ nanocrystals for better lithium ion battery cathode materials

Authors

Caiyun Nan, Department of Chemistry, State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
Jun Lu, Department of Chemistry, State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
Lihong Li, Department of Chemistry, State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
Lingling Li, Department of Chemistry, State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
Qing Peng, Department of Chemistry, State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
Yadong Li, Department of Chemistry, State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China

Keywords

LiFePO4 nanocrystals, size and shape control, lithium ion battery, rate capability

Abstract

Lithium iron phosphate (LiFePO4) is a potential high efficiency cathode material for lithium ion batteries, but the low electronic conductivity and single diffusion channel for lithium ions require good particle size and shape control during the synthesis of this material. In this paper, six LiFePO4 nanocrystals with different size and shape have been successfully synthesized in ethylene glycol. The addition sequence Fe–PO4–Li helps to form LiFePO4 nanocrystals with mostly {010} faces exposed, and increasing the amount of LiOH leads to a decrease in particle size. The electrochemical performance of the six distinct LiFePO4 particles show that the most promising LiFePO4 nanocrystals either have predominant {010} face exposure or high specific area, with little iron(II) oxidation.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-013-0324-8

Publisher

Tsinghua University Press

Recommended Citation

Caiyun Nan,Jun Lu,Lihong Li,Lingling Li,Qing Peng,Yadong Li, Size and shape control of LiFePO4 nanocrystals for better lithium ion battery cathode materials. NanoRes.2013, 6(7): 469–477