Modeling the discharge behavior of a lithium-sulfur battery

Date

2020-10-01

Author

Erisen, Nisa
Eroglu, Damla

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

226
views

0
downloads

In lithium-sulfur (Li-S) batteries, the discharge performance depends greatly on a number of cell design parameters because of the complex reaction mechanisms in the cathode. Electrolyte-to-sulfur (E/S) ratio and carbon-to-sulfur (C/S) ratio in the cell are key examples of these critical design factors that define the Li-S battery performance. Here, a 1-D electrochemical model is reported to calculate the dependence of the discharge behavior of a Li-S battery on the E/S and C/S ratios. Proposed model describes the complex kinetics through two electrochemical and two dissolution/precipitation reactions. Concentration variations in the cathode are also taken into account in the model. Characteristic aspects of the discharge profile of a Li-S battery -the two distinct voltage plateaus and the voltage dip in between- are captured in the predicted voltage curve. Similar trends on the discharge performance of the Li-S cell with varying E/S and C/S ratios are projected; both voltage and discharge capacity of the Li-S battery are improved substantially with increasing C/S or E/S ratio up to a certain point, whereas, the dependence of the discharge performance on these factors is less substantial at higher ratios. This model offers a mechanistic interpretation of the influence of cell design on the Li-S battery performance.

Subject Keywords

Fuel Technology, Renewable Energy, Sustainability and the Environment, Energy Engineering and Power Technology, Nuclear Energy and Engineering

URI

https://hdl.handle.net/11511/66127

Journal

INTERNATIONAL JOURNAL OF ENERGY RESEARCH

DOI

https://doi.org/10.1002/er.5701

Collections

Department of Chemical Engineering, Article

Suggestions

OpenMETU
Core

Effective factors improving catalyst layers of PEM fuel cell Avcioglu, Gokce S.; FIÇICILAR, BERKER; Eroğlu, İnci (Elsevier BV, 2018-06-07) Cathode catalyst layer has an important role on water management across the membrane electrode assembly (MEA). Effect of Pt percentage in commercial catalyst and Pt loading from the viewpoint of activity and water management on performance was investigated. Physical and electrochemical characteristics of conventional and hydrophobic catalyst layers were compared. Performance results revealed that power density of conventional catalyst layers (CLs) increased from 0.28 to 0.64 W/cm(2) at 0.45 V with the incre...
Wellbore Modeling for Predicting the Flowing Behavior of Gas Condensate during Production Adagulu, D.; Gumrah, F.; Sınayuç, Çağlar (Informa UK Limited, 2009-01-01) Many models used to determine pressure and temperature profiles for two-phase flow systems assume that the fluid composition does not change along the wellbore. The aim of this study is to use and combine two-phase flow temperature and pressure profile models and include the effect of composition change for two-phase flow of gas condensate fluid through a wellbore under steady-state conditions. Temperature and pressure profiles obtained from varied composition and constant composition cases are compared for...
Mo doping of layered Li (NixMnyCo1-x-y-zMz)O-2 cathode materials for lithium-ion batteries PİŞKİN, BERKE; Uygur, Cansu Savas; Aydınol, Mehmet Kadri (Wiley, 2018-10-10) We systematically investigated the effects of Mo doping on the structure, morphology, and the electrochemical performance of Li (NixMnyCo1-x-y-zMz)O-2 (NMC) cathode materials for Li-ion batteries. Layered NMC cathodes were synthesized with the ratio of 111, 622, and 226 via spray pyrolysis yielding submicron-sized aggregates in the shape of hollow spherical particles. We performed X-ray diffraction analyses to determine the present phases and the ordering in structure. X-ray diffraction pattern of Mo-doped ...
Investigation of Porosity and Permeability Impairment in Sandstones by X-ray Analysis and Simulation Iscan, A. G.; Kök, Mustafa Verşan; Civan, F. (Informa UK Limited, 2009-01-01) Both porosity and permeability constitute the major parameters in core analysis. In this study, the variation of these two parameters along a sandstone core sample was investigated during formation damage. A water-based drilling fluid was dynamically circulated through the core sample for three different time intervals of 15 min, 45 min, and 60 min at 100 psi circulation pressure. The core sample was analyzed using x-ray digital radiography by sectional image approach. The differences in the porous media du...
Morphology effect on electrochemical properties of doped (W and Mo) 622NMC, 111NMC, and 226NMC cathode materials Pişkin, B.; Uygur, Cansu Savaş; Aydınol, Mehmet Kadri (Elsevier BV, 2020-03-01) An investigation was carried out on layered Li(NixMnyCo1-x-y)O-2 (NMC) cathode active materials for Li-ion batteries to determine the effect of morphology on their electrochemical performances. The NMC active materials were doped with Mo or W (2 wt%) in the study. Doped NMC cathodes with a ratio of 111, 622 and 226 (NiMnCo) were synthesized by spray pyrolysis which yielded aggregates were submicron size. A systematic investigation was performed, and two distinct morphology types were identified in active ma...

Citation Formats

N. Erisen and D. Eroglu, “Modeling the discharge behavior of a lithium-sulfur battery,” INTERNATIONAL JOURNAL OF ENERGY RESEARCH, pp. 10599–10611, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66127.