Title: An Efficient Electrochemical Tanks-in-Series Model for Lithium Sulfur Batteries

Abstract

This article applies and efficiently implements the Tanks-in-Series methodology ( J. Electrochem. Soc. , 167 , 013534 (2020)) to generate a computationally efficient electrochemical model for Lithium-Sulfur batteries. The original Tank model approach for Lithium-ion batteries is modified to account for porosity changes with time. In addition, an exponential scaling method is introduced that enables efficient simulation of the model equations to address the wide range of time constants present for different reactions in the Lithium-Sulfur system. The Tank Model achieves acceptable voltage error even for transport-limited discharged conditions. Predictions of internal electrochemical variables are examined, and electrochemical implications of the approximations discussed. This suggests significant potential for real-time applications such as optimal charging, cell-balancing, and estimation, and represents a step forward in efforts to incorporate detailed electrochemical models in advanced Battery Management Systems for Lithium-Sulfur batteries.

Authors:

Parke, Caitlin D. ;

• Search DOE PAGES for author "Parke, Caitlin D."
• Search DOE PAGES for ORCID "0000-0001-7732-4044"

Subramaniam, Akshay ;

• Search DOE PAGES for author "Subramaniam, Akshay"
• Search DOE PAGES for ORCID "0000-0002-9306-7436"

Kolluri, Suryanarayana ;

• Search DOE PAGES for author "Kolluri, Suryanarayana"
• Search DOE PAGES for ORCID "0000-0003-2731-7107"

Schwartz, Daniel T. ;

• Search DOE PAGES for author "Schwartz, Daniel T."
• Search DOE PAGES for ORCID "0000-0003-1173-5611"

Subramanian, Venkat R.

• Search DOE PAGES for author "Subramanian, Venkat R."
• Search DOE PAGES for ORCID "0000-0002-2092-9744"

Publication Date:

Thu Dec 03 00:00:00 EST 2020

Sponsoring Org.:

USDOE Advanced Research Projects Agency - Energy (ARPA-E)

OSTI Identifier:

1731010

Resource Type:

Published Article

Journal Name:

Journal of the Electrochemical Society

Additional Journal Information:

Journal Name: Journal of the Electrochemical Society Journal Volume: 167 Journal Issue: 16; Journal ID: ISSN 0013-4651

Publisher:

The Electrochemical Society

Country of Publication:

United States

Language:

English