A microstructurally resolved model for Li-S batteries assessing the impact of the cathode design on the discharge performance
Journal article, 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.

Author

Vigneshwaran Thangavel

University of Picardie Jules Verne

Centre national de la recherche scientifique (CNRS)

Kan Hao Xue

Centre national de la recherche scientifique (CNRS)

Huazhong University of Science and Technology

University of Picardie Jules Verne

Youcef Mammeri

University of Picardie Jules Verne

Matias Quiroga

University of Picardie Jules Verne

Centre national de la recherche scientifique (CNRS)

Afef Mastouri

Centre national de la recherche scientifique (CNRS)

University of Picardie Jules Verne

Claude Guéry

University of Picardie Jules Verne

Centre national de la recherche scientifique (CNRS)

Patrik Johansson

Chalmers, Physics, Condensed Matter Physics

Mathieu Morcrette

University of Picardie Jules Verne

Centre national de la recherche scientifique (CNRS)

Alejandro A. Franco

Centre national de la recherche scientifique (CNRS)

Institut Universitaire de France

University of Picardie Jules Verne

Journal of the Electrochemical Society

0013-4651 (ISSN)

Vol. 163 13 A2817-A2829

Subject Categories

Materials Chemistry

DOI

10.1149/2.0051614jes

More information

Latest update

9/7/2018 1