Structure of Li2FeSiO4

被引:236
作者
Nishimura, Shin-ichi [1 ]
Hayase, Shogo [1 ]
Kanno, Ryoji [1 ]
Yashima, Masatomo [2 ]
Nakayama, Noriaki [3 ]
Yamada, Atsuo [1 ]
机构
[1] Tokyo Inst Technol, Interdisciplinary Grad Sch Sci & Engn, Dept Elect Chem, Yokohama, Kanagawa 2268502, Japan
[2] Tokyo Inst Technol, Interdisciplinary Grad Sch Sci & Engn, Dept Mat Sci & Engn, Yokohama, Kanagawa 2268502, Japan
[3] Yamaguchi Univ, Fac Engn, Dept Adv Mat Sci & Engn, Ube, Yamaguchi 7558611, Japan
关键词
D O I
10.1021/ja805543p
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A large-scale lithium-ion battery is the key technology toward a greener society. A lithium iron silicate system is rapidly attracting much attention as the new important development platform of cathode material with abundant elements and possible multielection reactions. The hitherto unsolved crystal structure of the typical composition Li2FeSiO4 has now been determined using high-resolution synchrotron X-ray diffraction and electron diffraction experiments. The structure has a 2 times larger superlattice compared to the previous beta-Li3PO4-based model, and its origin is the periodic modulation of coordination tetrahedra.
引用
收藏
页码:13212 / 13213
页数:2
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