In Situ Localized Polysulfide Injector for the Activation of Bulk Lithium Sulfide.

Autor:	Li M; Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 Cass Avenue, Lemont, Illinois 60439, United States.; Department of Chemical Engineering, Waterloo Institute of Nanotechnology, University of Waterloo,200 University Avenue West, Waterloo, ON N2L 3G1, Canada., Lu J; Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 Cass Avenue, Lemont, Illinois 60439, United States., Shi J; Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 Cass Avenue, Lemont, Illinois 60439, United States.; Department of Chemical and Environmental Engineering, University of California-Riverside, Riverside, California 92521, United States., Son SB; Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 Cass Avenue, Lemont, Illinois 60439, United States., Luo D; Department of Chemical Engineering, Waterloo Institute of Nanotechnology, University of Waterloo,200 University Avenue West, Waterloo, ON N2L 3G1, Canada., Bloom I; Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 Cass Avenue, Lemont, Illinois 60439, United States., Chen Z; Department of Chemical Engineering, Waterloo Institute of Nanotechnology, University of Waterloo,200 University Avenue West, Waterloo, ON N2L 3G1, Canada., Amine K; Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 Cass Avenue, Lemont, Illinois 60439, United States.; Department of Material Science and Engineering, Stanford University, Stanford, California 94305, United States.
Jazyk:	angličtina
Zdroj:	Journal of the American Chemical Society [J Am Chem Soc] 2021 Feb 10; Vol. 143 (5), pp. 2185-2189. Date of Electronic Publication: 2021 Jan 28.
DOI:	10.1021/jacs.0c11265
Abstrakt:	The activation of commercial Li 2 S remains to be one of the key challenges against its commercialization as a starting cathode material for a sulfur-based Li-ion battery system. In this work we take advantage of the lower oxidation potential of commercial Na 2 S (1-3 wt%) to serve as an in situ and local polysulfide injector for the activation of commercial Li 2 S (70 wt%). In contrast to applying pre-solvated redox mediators, this technique allows for the activation of commercial Li 2 S at lower voltages with an electrolyte content as low as 3 μL mg -1 Li 2 S at 3 mgmg Li 2 S cm -2 and 4 μL mg -1 Li 2 S at 6.5 mg Li 2 S cm -2 without any other material modification.
Databáze:	MEDLINE
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