Dataset for "Experimental Study on Cycle Aging of 3.4 Ah Lithium-Sulfur Pouch Cells: Temperature and Current Investigation"

Dataset for "Experimental Study on Cycle Aging of 3.4 Ah Lithium-Sulfur Pouch Cells: Temperature and Current Investigation" 机器收录·待核验

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High energy density sulfur cathodes are among the most promising alternatives to conventional

intercalation cathodes for next-generation lithium-ion batteries. However, the practical

implementation of lithium–sulfur (Li–S) systems is limited by rapid capacity fade and poor

cycling stability. These issues are primarily driven by the polysulfide shuttle effect, wherein

soluble higher lithium polysulfides, generated at the high voltage discharge plateau, migrate

between the electrodes, resulting in active material loss. In an attempt to approach the

commercial application of Li-S batteries, an in-depth investigation of pouch cells under different

conditions is inevitable. This study focuses on the cycle aging of pre-commercial 3.4 Ah Li-S

pouch cells at different temperatures and current rates using non-destructive techniques. The

mostne gative effect on ther performance of the Li-Sbattery cell is a low temperature of 10 ◦C and

50 ◦C. From the perspective of different charging and discharging currents, the reduced battery

lifetime was observed for fast charging at 0.2 C and 0.3 C. The internal resistance increased

with the degradation of the battery cell and is more pronounced in the low voltage plateau. To

maximize the cycle life of the Li-S batteries, the optimal cycling conditions are at around 30 ◦C,

charging at 0.1 C and discharging at 0.2 C.

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