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Abstract
With the rising demand for electricity storage devices, the performance requirements for such equipment have become increasingly stringent. Lithium-sulfur (Li-S) batteries are poised to be among the next generation of energy storage systems. However, before they can be commercially viable, several challenges must be addressed, including low sulfur conductivity and the shuttle effect. Herein, polypyrrole based sulfur composite was prepared by simple method in hydrothermal teflon lined autoclave for Li-S battery. The S/SP/ppy/PVDF electrode exhibited the initial discharge capacity of 662 mAh g− 1 at 0.5 C and 637 mAh g− 1 after 100 cycles. The Coulombic efficiency was 96% all along charge/discharge cycling. Moreover, Li-S coin cells were assembled and tested to demonstrate the potential application and scale-up of the polypyrrole-sulfur composite.
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Details
1 Pavol Jozef Šafárik University in Košice, Department of Physical Chemistry, Faculty of Sciences, Košice, Slovak Republic (GRID:grid.11175.33) (ISNI:0000 0004 0576 0391)
2 Slovak Academy of Sciences, Institute of Materials Research, Košice, Slovak Republic (GRID:grid.419303.c) (ISNI:0000 0001 2180 9405)
3 Tomas Bata University in Zlín, Centre of Polymer Systems, Zlín, Czech Republic (GRID:grid.21678.3a) (ISNI:0000 0001 1504 2033)
4 Pavol Jozef Šafárik University in Košice, Department of Inorganic Chemistry, Faculty of Sciences, Kosice, Slovak Republic (GRID:grid.11175.33) (ISNI:0000 0004 0576 0391)