Increasing Energy Densities of Sulfur Cathodes using Dispersing and Calendering Processes for Lithium–Sulfur Batteries. Titscher, P., Schön, P., Horst, M., Krewer, U., & Kwade, A. Energy Technology, 6(6):1139–1147, 2018.
doi  abstract   bibtex   
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Lithium–sulfur batteries are nearly ready to be commercialized. However, each material composition has specific challenges regarding its adaption to state of the art production lines of lithium-ion batteries. The influence of the dispersing and calendering process on the battery performance is investigated with an easy-to-implement material approach and a solvent-based process. The slurry is treated by different dispersing intensities using an extruder and a triple roller mill, which leads to increased energy densities. The coating is calendered to increase the energy density by maintaining the specific capacity. The reactions within the sulfur cathodes are investigated by evaluating the potentials of the upper and lower voltage plateaus. It was determined that the variation of the process parameters leads to a changed reactivity of the polysulfide reactions but not to a shift of the sulfur utilization within the sulfur cathodes. The process parameters influence the pore structure of the cathode, resulting in different sensitivities for higher C-rates.
@article{titscher_increasing_2018,
	title = {Increasing {Energy} {Densities} of {Sulfur} {Cathodes} using {Dispersing} and {Calendering} {Processes} for {Lithium}–{Sulfur} {Batteries}},
	volume = {6},
	copyright = {All rights reserved},
	issn = {21944296},
	doi = {10.1002/ente.201700916},
	abstract = {© 2018 Wiley-VCH Verlag GmbH \& Co. KGaA, Weinheim Lithium–sulfur batteries are nearly ready to be commercialized. However, each material composition has specific challenges regarding its adaption to state of the art production lines of lithium-ion batteries. The influence of the dispersing and calendering process on the battery performance is investigated with an easy-to-implement material approach and a solvent-based process. The slurry is treated by different dispersing intensities using an extruder and a triple roller mill, which leads to increased energy densities. The coating is calendered to increase the energy density by maintaining the specific capacity. The reactions within the sulfur cathodes are investigated by evaluating the potentials of the upper and lower voltage plateaus. It was determined that the variation of the process parameters leads to a changed reactivity of the polysulfide reactions but not to a shift of the sulfur utilization within the sulfur cathodes. The process parameters influence the pore structure of the cathode, resulting in different sensitivities for higher C-rates.},
	number = {6},
	journal = {Energy Technology},
	author = {Titscher, Paul and Schön, Patrick and Horst, Marcella and Krewer, Ulrike and Kwade, Arno},
	year = {2018},
	keywords = {batteries, calendering, electrochemistry, materials processing, mechanical properties},
	pages = {1139--1147},
}

Downloads: 0