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  • Ultrasound assisted design of sulfur/carbon cathodes with partially fluorinated ether electrolytes for highly efficient Li/S batteries.

Ultrasound assisted design of sulfur/carbon cathodes with partially fluorinated ether electrolytes for highly efficient Li/S batteries.

Advanced materials (Deerfield Beach, Fla.) (2013-01-22)
Wei Weng, Vilas G Pol, Khalil Amine
ABSTRACT

A one-step, eco-friendly ultrasound-assisted process is established for the rapid synthesis of sulfur-carbon composite cathode materials, avoiding the widely used, energy inefficient "melt-down" process for Li-S batteries. It is demonstrated that, without inserting sulfur into pores of carbon, the coulombic efficiency of SC/Li cell in the new DOL/D2 electrolyte is greater than 96% for 100 cycles, which is far superior to the reported numerous electrolyte formulations.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Sodium thiosulfate pentahydrate, 99.999% trace metals basis
Supelco
Diethyl ether, analytical standard
Sigma-Aldrich
Diethyl ether
Sigma-Aldrich
Sodium thiosulfate pentahydrate, BioXtra, ≥99.5%
Sigma-Aldrich
Diethyl ether, suitable for HPLC, ≥99.9%, inhibitor-free
Sigma-Aldrich
Sodium thiosulfate pentahydrate, ACS reagent, ≥99.5%
Sigma-Aldrich
Diethyl ether, anhydrous, ACS reagent, ≥99.0%, contains BHT as inhibitor
Sigma-Aldrich
Sodium thiosulfate pentahydrate, ReagentPlus®, ≥99.5%
Sigma-Aldrich
Diethyl ether, ACS reagent, anhydrous, ≥99.0%, contains BHT as inhibitor
Sigma-Aldrich
Sodium thiosulfate, ≥99.99% trace metals basis
Sigma-Aldrich
Sodium thiosulfate, ReagentPlus®, 99%
Sigma-Aldrich
Sodium thiosulfate, purum p.a., anhydrous, ≥98.0% (RT)