Tuning the position of the redox couples in materials with NASICON structure by anionic substitution

被引：182

作者：

Padhi, AK ^{[1
]}

Manivannan, V ^{[1
]}

Goodenough, JB ^{[1
]}

机构：

[1] Univ Texas, Ctr Mat Sci & Engn, Austin, TX 78712 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1998年 / 145卷 / 05期

关键词：

D O I：

10.1149/1.1838513

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Previous studies on insertion of lithium into rhombohedral forms of Fe-2(SO4)(3) and Li3Fe2(PO4)(3) have determined the position of the Fe3+/Fe2+ redox couple to be at 3.6 and 2.8 eV, respectively, below the Fermi level of lithium. Lithium insertion into rhombohedral LiFe2(SO4)(2)(PO4) with NASICON framework exposes the Fe3+/Fe2+ redox couple at 3.3-3.4 eV below the Fermi energy of lithium. Unlike Fe-2(SO4)(3), the insertion of lithium into the structure of LiFe2(SO4)(2)(PO4) is accomplished as a single-phase solid solution, which makes it attractive as an electrode material for rechargeable lithium batteries.

引用

页码：1518 / 1520

页数：3

共 14 条

[1]

Goodenough J. B., 1996, 37 BATT S TOK I TECH

[2]

GOODENOUGH JB, 1984, REV CHIM MINER, V21, P435

[3] LI METAL-FREE RECHARGEABLE LIMN2O4/CARBON CELLS - THEIR UNDERSTANDING AND OPTIMIZATION [J].