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Investigation on Cycling and Calendar Aging Processes of 3.4 Ah Lithium-Sulfur Pouch Cells

1
Phase Equilibria Research Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan 45371-38791, Iran
2
Department of Energy Technology, Aalborg University, 9000 Aalborg, Denmark
3
Faculty of Electrical Engineering, Czech Technical University in Prague, 166 27 Prague, Czech Republic
*
Author to whom correspondence should be addressed.
Academic Editor: Julia Kowal
Sustainability 2021, 13(16), 9473; https://doi.org/10.3390/su13169473
Received: 28 July 2021 / Revised: 16 August 2021 / Accepted: 17 August 2021 / Published: 23 August 2021
(This article belongs to the Special Issue Beyond the Lithium-Ion Battery Storage Technology)
Much attention has been paid to rechargeable lithium-sulfur batteries (Li–SBs) due to their high theoretical specific capacity, high theoretical energy density, and affordable cost. However, their rapid c fading capacity has been one of the key defects in their commercialization. It is believed that sulfuric cathode degradation is driven mainly by passivation of the cathode surface by Li2S at discharge, polysulfide shuttle (reducing the amount of active sulfur at the cathode, passivation of anode surface), and volume changes in the sulfuric cathode. These degradation mechanisms are significant during cycling, and the polysulfide shuttle is strongly present during storage at a high state-of-charge (SOC). Thus, storage at 50% SOC is used to evaluate the effect of the remaining degradation processes on the cell’s performance. In this work, unlike most of the other previous observations that were performed at small-scale cells (coin cells), 3.4 Ah pouch Li–SBs were tested using cycling and calendar aging protocols, and their performance indicators were analyzed. As expected, the fade capacity of the cycling aging cells was greater than that of the calendar aging cells. Additionally, the measurements for the calendar aging cells indicate that, contrary to the expectation of stopping the solubility of long-chain polysulfides and not attending the shuttle effect, these phenomena occur continuously under open-circuit conditions. View Full-Text
Keywords: lithium-sulfur batteries; calendar aging; cycling aging lithium-sulfur batteries; calendar aging; cycling aging
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MDPI and ACS Style

Gohari, S.; Knap, V.; Yaftian, M.R. Investigation on Cycling and Calendar Aging Processes of 3.4 Ah Lithium-Sulfur Pouch Cells. Sustainability 2021, 13, 9473. https://doi.org/10.3390/su13169473

AMA Style

Gohari S, Knap V, Yaftian MR. Investigation on Cycling and Calendar Aging Processes of 3.4 Ah Lithium-Sulfur Pouch Cells. Sustainability. 2021; 13(16):9473. https://doi.org/10.3390/su13169473

Chicago/Turabian Style

Gohari, Salimeh, Vaclav Knap, and Mohammad R. Yaftian. 2021. "Investigation on Cycling and Calendar Aging Processes of 3.4 Ah Lithium-Sulfur Pouch Cells" Sustainability 13, no. 16: 9473. https://doi.org/10.3390/su13169473

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