OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Impact of Li2O2 particle size on Li−O2 battery charge process: insights from a multiscale modeling perspective

Yin, Yinghui and Gaya, Caroline and Torayev, Amangeldi and Thangavel, Vigneshwaran and Franco, Alejandro A. Impact of Li2O2 particle size on Li−O2 battery charge process: insights from a multiscale modeling perspective. (2016) Journal of Physical Chemistry Letters, 7 (19). 3897-3902.

[img]
Preview
(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
816kB

Official URL: http://dx.doi.org/10.1021/acs.jpclett.6b01823

Abstract

We report a comprehensive multiscale model describing charge processes of Li−O2 batteries. On the basis of a continuum approach, the present model combines mathematical descriptions of mass transport of soluble species (O2, Li+, LiO2) and elementary reaction kinetics, which are assumed to be dependent on the morphology of the Li2O2 formed during discharge. The simulated charge curves are in agreement with previously reported experimental studies. The model along with the assumed reaction mechanisms provides physical explanations for the two-step charge profiles. Furthermore, it suggests that these charge profiles depend on the size of the Li2O2 particles, which are determined by the applied current density during discharge. Therefore, the model underlines the strong link between discharge and charge processes.

Item Type:Article
HAL Id:hal-01582504
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Université de Picardie Jules Verne (FRANCE)
Other partners > ALISTORE-ERI (FRANCE)
Other partners > IRT Saint Exupéry - Institut de Recherche Technologique (FRANCE)
Laboratory name:
Statistics:download
Deposited By: Marie-Pierre Le Tallec
Deposited On:19 Jul 2017 09:42

Repository Staff Only: item control page