Molecular wiring of LiMnPO4 (olivine) by ruthenium(II)-bipyridine complexes

被引：2
|
作者：
Kavan, Ladislav [1 ]
Zukalova, Marketa [1 ]
Exnar, Ivan [2 ]
Zakeeruddin, Shaik M. [3 ]
Graetzel, Michael [3 ]
机构：
[1] Acad Sci Czech Republ, J Heyrovsky Inst Phys Chem, Vvi, CZ-18223 Prague 8, Czech Republic
[2] PSE B, High Power Lithium SA, CH-1015 Lausanne, Switzerland
[3] Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2009年 / 11卷 / 11期
基金：
瑞士国家科学基金会;
关键词：
LiMnPO4; Ru-bipyridine complexes; Olivine; LIFEPO4;
D O I：
10.1016/j.elecom.2009.09.014
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
LiMnPO4 (olivine) was surface-modified by two different complexes: Ru-bis(4,4'-diethoxycarbonyl-2,2'-bipyridine)(4,4'-dicarboxylate-2,2'-bipyridine) and Ru-bis(4-carboxylic acid-4'-carboxylate-2,2'-bipyridine)(4,4'-dinonyl-2,2'bipyridine). These complexes have redox potentials of 4.45 and 4.25 V vs. Li/Li+, respectively, and are both active for molecular wiring of LiMnPO4. The surface-confined Ru(II)/Ru(III) redox reaction propagates across the monolayer via hole-hopping, allowing a subsequent chemical delithiation of the underneath olivine towards MnPO4. The activity of LiMnPO4 is about half of that of LiFePO4 (olivine) at similar experimental conditions. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：2137 / 2140
页数：4
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