Molecular wiring of LiMnPO4 (olivine) by ruthenium(II)-bipyridine complexes
Kavan, L.; Zukalova, M.; Exnar, I.; Zakeeruddin, S.M.; Graetzel, M.
2009

Abstract

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.

Details

Title Molecular wiring of LiMnPO4 (olivine) by ruthenium(II)-bipyridine complexes
Author(s) Kavan, L. ; Zukalova, M. ; Exnar, I. ; Zakeeruddin, S.M. ; Graetzel, M.
Published in Electrochemistry Communications
Volume 11
Issue 11
Pages 2137-2140
Date 2009
Keywords
DOI https://doi.org/10.1016/j.elecom.2009.09.014
Other identifier(s) View record in Web of Science
Laboratories LPI
Record Appears in Scientific production and competences > SB - School of Basic Sciences > ISIC - Institute of Chemical Sciences and Engineering > LPI - Laboratory of Photonics and Interfaces
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date 2009-12-23

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