Advanced Materials (FRG) 2013-03-20

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

Wei Weng, Vilas G Pol, Khalil Amine

Index: Adv. Mater. 25(11) , 1608-15, (2013)

Full Text: HTML

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.Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.