Understanding memory effects in Li-ion batteries: evidence of a kinetic origin in TiO2 upon hydrogen annealing

E. Ventosa; T. Löffler; F. La Mantia; W. Schuhmann

doi:10.1039/C6CC06070F

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Understanding memory effects in Li-ion batteries: evidence of a kinetic origin in TiO₂ upon hydrogen annealing†

E. Ventosa,*^a T. Löffler,^a F. La Mantia^bc and W. Schuhmann

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* Corresponding authors

^a Analytical Chemistry – Center for Electrochemical Sciences (CES), Ruhr-Universität Bochum, D-44780 Bochum, Germany
E-mail: edgar.ventosa@rub.de

^b Semiconductor and Energy Conversion – Center for Electrochemical Sciences (CES), Ruhr-Universität Bochum, Universitätstr. 150, D-44780 Bochum, Germany

^c Energiespeicher- und Energiewandlersysteme, Universität Bremen, Wiener Str. 12, 28359 Bremen, Germany

Abstract

Memory effects in Li-ion battery materials have been explained on the basis of the thermodynamics of many-particles body, however the role of the (de-)intercalation kinetics is not yet clear. We demonstrate that kinetic aspects, specifically Li-ion mobility, are determining the magnitude of the memory effect in TiO₂ by studying samples with different levels of oxygen vacancies.

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Article information

DOI: https://doi.org/10.1039/C6CC06070F
Article type: Communication
Submitted: 22 Jul 2016
Accepted: 19 Aug 2016
First published: 22 Aug 2016
This article is Open Access

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Chem. Commun., 2016,52, 11524-11526

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Understanding memory effects in Li-ion batteries: evidence of a kinetic origin in TiO₂ upon hydrogen annealing

E. Ventosa, T. Löffler, F. La Mantia and W. Schuhmann, Chem. Commun., 2016, 52, 11524 DOI: 10.1039/C6CC06070F

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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