A microstructurally resolved model for Li-S batteries assessing the impact of the cathode design on the discharge performance
Artikel i vetenskaplig tidskrift, 2016

This paper reports a discharge model for lithium sulfur (Li-S) battery cells, supported by a multi-scale description of the composite C/S cathode microstructure. The cathode is assumed to be composed of mesoporous carbon particles with inter-particular pores in-between and the sulfur impregnated into both types of pores. The electrolyte solutes such as sulfur, polysulfides and lithium ions, produced during the discharge, are allowed to exchange between the pores. Furthermore, the model describes the Li2S(solid) precipitation and its effects on transport and reduction reaction kinetics. Hereby it provides fundamental insights on the impact on the Li-S discharge curve of practically modifiable manufacturing parameters and operation designs, such as current density, carbon porosity, C/S ratio and sizes of carbon particles and pores.

Författare

Vigneshwaran Thangavel

Université de Picardie Jules Verne

CNRS Centre National de la Recherche Scientifique

Kan Hao Xue

Université de Picardie Jules Verne

Huazhong University of Science and Technology

CNRS Centre National de la Recherche Scientifique

Youcef Mammeri

Université de Picardie Jules Verne

Matias Quiroga

CNRS Centre National de la Recherche Scientifique

Université de Picardie Jules Verne

Afef Mastouri

CNRS Centre National de la Recherche Scientifique

Université de Picardie Jules Verne

Claude Guéry

CNRS Centre National de la Recherche Scientifique

FR CNRS 3104

Université de Picardie Jules Verne

Patrik Johansson

Chalmers, Fysik, Kondenserade materiens fysik

Mathieu Morcrette

CNRS Centre National de la Recherche Scientifique

FR CNRS 3104

Université de Picardie Jules Verne

Alejandro A. Franco

Université de Picardie Jules Verne

Institut Universitaire de France

FR CNRS 3104

CNRS Centre National de la Recherche Scientifique

Journal of the Electrochemical Society

0013-4651 (ISSN)

Vol. 163 13 A2817-A2829

Ämneskategorier

Materialkemi

DOI

10.1149/2.0051614jes