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

Centre national de la recherche scientifique (CNRS)

Kan Hao Xue

Centre national de la recherche scientifique (CNRS)

Huazhong University of Science and Technology

Université de Picardie Jules Verne

Youcef Mammeri

Université de Picardie Jules Verne

Matias Quiroga

Université de Picardie Jules Verne

Centre national de la recherche scientifique (CNRS)

Afef Mastouri

Centre national de la recherche scientifique (CNRS)

Université de Picardie Jules Verne

Claude Guéry

Université de Picardie Jules Verne

Centre national de la recherche scientifique (CNRS)

Patrik Johansson

Chalmers, Fysik, Kondenserade materiens fysik

Mathieu Morcrette

Université de Picardie Jules Verne

Centre national de la recherche scientifique (CNRS)

Alejandro A. Franco

Centre national de la recherche scientifique (CNRS)

Institut Universitaire de France

Université de Picardie Jules Verne

Journal of the Electrochemical Society

0013-4651 (ISSN)

Vol. 163 13 A2817-A2829

Ämneskategorier

Materialkemi

DOI

10.1149/2.0051614jes