Highly ordered staging structural interface between LiFePO4 and FePO4

Liumin Suo; Wenze Han; Xia Lu; Lin Gu; Yong-Sheng Hu; Hong Li; Dongfeng Chen; Liquan Chen; Susumu Tsukimoto; Yuichi Ikuhara

doi:10.1039/C2CP40610A

Highly ordered staging structural interface between LiFePO₄ and FePO₄†

Liumin Suo,^a Wenze Han,^b Xia Lu,^a Lin Gu,*^a Yong-Sheng Hu,^a Hong Li,*^a Dongfeng Chen,^b Liquan Chen,^a Susumu Tsukimoto^c and Yuichi Ikuhara^cde

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* Corresponding authors

^a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
E-mail: l.gu@aphy.iphy.ac.cn, hli@aphy.iphy.ac.cn
Fax: +86-10-82649046
Tel: +86-10-82649808

^b China Institute of Atomic Energy, Beijing 102413, China

^c WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan

^d Institute of Engineering Innovation, The University of Tokyo, Tokyo 113-8654, Japan

^e Nanostructures Research Laboratory, Japan Fine Ceramic Centre, Nagoya 456-8587, Japan

Abstract

A highly ordered interface between LiFePO₄ phase and FePO₄ phase with staging structure along the a axis and perpendicular to the b axis direction has been observed for the first time, in a partially chemically delithiated Li_0.90Nb_0.02FePO₄ by advanced aberration-corrected annular-bright-field (ABF) scanning transmission electron microscopy (STEM).

Physical Chemistry Chemical Physics

Highly ordered staging structural interface between LiFePO₄ and FePO₄†

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Highly ordered staging structural interface between LiFePO₄ and FePO₄

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Physical Chemistry Chemical Physics