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World Electr. Veh. J. 2018, 9(2), 34; https://doi.org/10.3390/wevj9020034

Capacity Recovery Effect in Lithium Sulfur Batteries for Electric Vehicles

1
Hochschule Ulm (HS Ulm), Prittwitzstr. 10, 89075 Ulm, Germany
2
Daimler AG, HPC G012, Hanns-Klemm-Str. 45, 71034 Böblingen, Germany
3
Institute for Electrical Energy Storage Technology, Technische Universität München (TUM), Arcisstr. 21, 80333 Munich, Germany
*
Author to whom correspondence should be addressed.
Received: 16 May 2018 / Revised: 9 August 2018 / Accepted: 10 August 2018 / Published: 17 August 2018
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Abstract

Lithium sulfur batteries have a promisingly high theoretical specific energy density of about 2600 Wh/kg and an expected practical specific energy density of about 500–600 Wh/kg. Therefore, it is a highly promising future energy storage technology for electric vehicles. Beside these advantages, this technology shows a low cell capacity at high discharge currents. Due to the capacity recovery effect, up to 20 % of the total cell capacity becomes available again with some rest time. This study shows a newly-developed capacity recovery model for lithium sulfur batteries. Due to the long rest periods of electric vehicles, this effect has an important influence on the usable cell capacity and depth of discharge in lithium sulfur batteries. View Full-Text
Keywords: battery; discharge rate; capacity recovery; lithium sulfur; modeling battery; discharge rate; capacity recovery; lithium sulfur; modeling
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Maurer, C.; Commerell, W.; Hintennach, A.; Jossen, A. Capacity Recovery Effect in Lithium Sulfur Batteries for Electric Vehicles. World Electr. Veh. J. 2018, 9, 34.

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