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
Centre national de la recherche scientifique (CNRS)
University of Picardie Jules Verne
Kan Hao Xue
Centre national de la recherche scientifique (CNRS)
University of Picardie Jules Verne
Huazhong University of Science and Technology
Youcef Mammeri
University of Picardie Jules Verne
Matias Quiroga
Centre national de la recherche scientifique (CNRS)
University of Picardie Jules Verne
Afef Mastouri
University of Picardie Jules Verne
Centre national de la recherche scientifique (CNRS)
Claude Guéry
University of Picardie Jules Verne
Centre national de la recherche scientifique (CNRS)
Patrik Johansson
Chalmers, Physics, Condensed Matter Physics
Mathieu Morcrette
Centre national de la recherche scientifique (CNRS)
University of Picardie Jules Verne
Alejandro A. Franco
Institut Universitaire de France
Centre national de la recherche scientifique (CNRS)
University of Picardie Jules Verne
Journal of the Electrochemical Society
0013-4651 (ISSN) 1945-7111 (eISSN)
Vol. 163 13 A2817-A2829Subject Categories (SSIF 2011)
Materials Chemistry
Other Physics Topics
DOI
10.1149/2.0051614jes