Self-balancing feature of Lithium-Sulfur batteries

Vaclav Knap, Daniel-Ioan Stroe, Andreas Elkjær Christensen, Karsten Propp, Abbas Fotouhi, Daniel J. Auger, Erik Schaltz, Remus Teodorescu

Research output: Contribution to journalJournal articleResearchpeer-review

11 Citations (Scopus)

Abstract

The Li-S batteries are a prospective battery technology, which despite to its currently remaining drawbacks offers useable performance and interesting features. The polysulfide shuttle mechanism, a characteristic phenomenon for the Li-S batteries, causes a significant self-discharge at higher state-of-charge (SOC) levels, which leads to the energy dissipation of cells with higher charge. In an operation of series-connected Li-S cells, the shuttle mechanism results into a self-balancing effect which is studied here. A model for prediction of the self-balancing effect is proposed in this work and it is validated by experiments. Our results confirm the self-balancing feature of Li-S cells and illustrate their dependence on various conditions such as temperature, charging limits and idling time at high SOC.
Original languageEnglish
JournalJournal of Power Sources
Volume372
Pages (from-to)245-251
Number of pages7
ISSN0378-7753
DOIs
Publication statusPublished - Dec 2017

Keywords

  • Inherent balancing
  • Lithium-Sulfur battery
  • Self-discharge
  • Series-connected batteries

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  • Advanced Components for Electro-Mobility Usage (ACEMU)

    Schaltz, E. (Project Participant), Teodorescu, R. (Project Participant), Knap, V. (Project Participant), Mathe, L. (Project Participant), Stroe, D.-I. (Project Participant), Kalogiannis, T. (Project Participant), Burlacu, P. D. (Project Participant) & Lascu, C. V. (Project Participant)

    DSF & EUDP

    01/01/201431/12/2017

    Project: Research

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