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
Universite de Picardie Jules Verne
CNRS Centre National de la Recherche Scientifique
Kan Hao Xue
Universite de Picardie Jules Verne
Huazhong University of Science and Technology
CNRS Centre National de la Recherche Scientifique
Youcef Mammeri
Universite de Picardie Jules Verne
Matias Quiroga
CNRS Centre National de la Recherche Scientifique
Universite de Picardie Jules Verne
Afef Mastouri
CNRS Centre National de la Recherche Scientifique
Universite de Picardie Jules Verne
Claude Guéry
CNRS Centre National de la Recherche Scientifique
FR CNRS 3104
Universite de Picardie Jules Verne
Patrik Johansson
Chalmers, Fysik, Kondenserade materiens fysik
Mathieu Morcrette
CNRS Centre National de la Recherche Scientifique
FR CNRS 3104
Universite de Picardie Jules Verne
Alejandro A. Franco
Universite 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-A2829Ämneskategorier (SSIF 2011)
Materialkemi
DOI
10.1149/2.0051614jes