Orientation-Dependent Arrangement of Antisite Defects in Lithium Iron(II) Phosphate Crystals

被引：77

作者：

Chung, Sung-Yoon ^{[1
,2
]}

Choi, Si-Young ^{[3
,4
]}

Yamamoto, Takahisa ^{[5
,6
]}

Ikuhara, Yuichi ^{[4
]}

机构：

[1] Inha Univ, Dept Mat Sci & Engn, Inchon 402751, South Korea

[2] Nalphates LLC, St Petersburg 198013, Russia

[3] Korea Inst Mat Sci, Chang Won 641831, South Korea

[4] Univ Tokyo, Inst Engn Innovat, Tokyo 1138656, Japan

[5] Univ Tokyo, Dept Adv Mat Sci, Tokyo 11138656, Japan

[6] Fine Ceram Ctr, Nanostruct Res Lab Japan, Nagoya, Aichi 4568587, Japan

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2009年 / 48卷 / 03期

关键词：

antisite defects; crystal engineering; electron microscopy; solid-state structures; LIFEPO4; DIFFRACTION; BATTERIES; OLIVINE; CONDUCTIVITY; TRANSITION; MICROSCOPY; DIFFUSION; CAPACITY; LATTICE;

D O I：

10.1002/anie.200803520

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Figure Presented) Aggregated antisite cations of iron (see picture, red) in the lithium sites of doped lithium iron phosphate (LiFePO4) are arranged preferentially along the b axis. To probe the peculiar array of the defects, Z-contrast STEM with a spherical-aberration correction is utilized. The images obtained using Z-contrast STEM suggest that the distribution of antisite defects in LiFePO4 can be adjusted for improved lithium ion transport. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：543 / 546

页数：4

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