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Issue 72, 2018
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Controlled hydroxy-fluorination reaction of anatase to promote Mg2+ mobility in rechargeable magnesium batteries

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Abstract

In anatase TiO2, substituting oxide anions with singly charged (F,OH) anions allows the controlled formation of cation vacancies, which act as reversible intercalation sites for Mg2+. We show that ion-transport (diffusion coefficients) and intercalation (reversible capacity) properties are controlled by two critical parameters: the vacancy concentration and the local anionic environment. Our results emphasise the complexity of this behaviour, and highlight the potential benefits of chemically controlling cationic-defects in electrode materials for rechargeable multivalent-ion batteries.

Graphical abstract: Controlled hydroxy-fluorination reaction of anatase to promote Mg2+ mobility in rechargeable magnesium batteries

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Supplementary files

Article information


Submitted
24 May 2018
Accepted
13 Aug 2018
First published
13 Aug 2018

Chem. Commun., 2018,54, 10080-10083
Article type
Communication

Controlled hydroxy-fluorination reaction of anatase to promote Mg2+ mobility in rechargeable magnesium batteries

J. Ma, T. Koketsu, Benjamin. J. Morgan, C. Legein, M. Body, P. Strasser and D. Dambournet, Chem. Commun., 2018, 54, 10080
DOI: 10.1039/C8CC04136A

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