[100]-Oriented LiFePO4 Nanoflakes toward High Rate Li-Ion Battery Cathode

[100] is believed to be a tough diffusion direction for Li+ in LiFePO4, leading to the belief that the rate performance of [100]-oriented LiFePO4 is poor. Here we report the fabrication of 12 nm-thick [100]-oriented LiFePO4 nanoflakes by a simple one-pot solvothermal method. The nanoflakes exhibit u...

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Bibliographic Details
Published in:Nano letters 2016-01, Vol.16 (1), p.795-799
Main Authors: Li, Zhaojin, Peng, Zhenzhen, Zhang, Hui, Hu, Tao, Hu, Minmin, Zhu, Kongjun, Wang, Xiaohui
Format: Article
Language:English
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Summary:[100] is believed to be a tough diffusion direction for Li+ in LiFePO4, leading to the belief that the rate performance of [100]-oriented LiFePO4 is poor. Here we report the fabrication of 12 nm-thick [100]-oriented LiFePO4 nanoflakes by a simple one-pot solvothermal method. The nanoflakes exhibit unexpectedly excellent electrochemical performance, in stark contrast to what was previously believed. Such an exceptional result is attributed to a decreased thermodynamic transformation barrier height (Δμb) associated with increased active population.
ISSN:1530-6984
1530-6992
DOI:10.1021/acs.nanolett.5b04855