Modeling and experimental validation of the discharge of lithium-sulfur batteries with nanoporous carbons following the Quasi-Solid-State Mechanism

A model is proposed for the Lithium Sulfur battery within confined nanopores according to the Quasi-Solid-State reaction mechanism , validated against an experimental discharge curve. The model reproduces quantitatively the discharge curve, showing a change of slope at 400 mAh/g, consistent with the reduction of Li2S2 into Li2S. A sensitivity analysis is performed, with transport resistivities of solid phases having the most important effect on cell capacity.

Automated summary

This paper proposes a model for the Lithium Sulfur battery in confined nanopores based on the Quasi-Solid-State reaction mechanism. The model is validated against an experimental discharge curve and quantitatively reproduces the curve, exhibiting a change of slope at 400 mAh/g, which corresponds to the reduction of Li2S2 into Li2S. A sensitivity analysis reveals that transport resistivities of solid phases have the most significant effect on cell capacity.