CYLINDRICAL LITHIUM-SULFUR BATTERIES
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United States of America Patent
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Issued Date -
Aug 8, 2024
app pub date -
Mar 25, 2024
filing date -
Jul 23, 2021
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Abstract
Thick cathodes associated with cylindrical lithium-sulfur batteries. The cathodes include one or more structured layers of agglomerates of carbonaceous particles disposed on opposing sides of a cathode current collector. The structured layers on each side of the cathode current collector may be characterized by varying agglomerate size and thickness of the structured layers. The structured layers of agglomerates may improve electrochemical kinetics and sulfur utilization within thick cathodes. The structured layers of agglomerates may decrease the number of interconnection or failure points between agglomerates disposed across the thickness of the structured layers on each side of the cathode current collector and mitigate mechanical stresses during the formation of a cylindrical jelly roll. Lithium-sulfur batteries including thick cathodes.
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