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Issue 31, 2014
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Elucidation of the reaction mechanism upon lithiation and delithiation of Cu0.5TiOPO4

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Abstract

The reaction mechanism of Cu0.5TiOPO4 upon lithiation and delithiation was elucidated by XAS, 31P-NMR, XRD, EDX, and electrochemical methods. The material reacts with a combined insertion and conversion process, in which first copper is extruded irreversibly by forming LiTiOPO4. Afterwards, Ti4+ is reduced reversibly in an insertion reaction followed by a conversion reaction. The conversion reaction leads to amorphization of the sample while titanium is reduced to oxidation states below 2+.

Graphical abstract: Elucidation of the reaction mechanism upon lithiation and delithiation of Cu0.5TiOPO4

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Publication details

The article was received on 03 Apr 2014, accepted on 01 Jun 2014 and first published on 04 Jun 2014


Article type: Paper
DOI: 10.1039/C4TA01627K
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J. Mater. Chem. A, 2014,2, 12513-12518
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    Elucidation of the reaction mechanism upon lithiation and delithiation of Cu0.5TiOPO4

    P. Bleith, M. Valla, P. Novák and C. Villevieille, J. Mater. Chem. A, 2014, 2, 12513
    DOI: 10.1039/C4TA01627K

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