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

doi:10.1002/adma.201204051

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

Adv Mater. 2013 Mar 20;25(11):1608-15. doi: 10.1002/adma.201204051. Epub 2013 Jan 20.

Authors

Wei Weng¹, Vilas G Pol, Khalil Amine

Affiliation

¹ Electrochemical Energy Storage Department, Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, IL 60439, USA.

PMID: 23335003
DOI: 10.1002/adma.201204051

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.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Carbon / chemistry
Electric Power Supplies*
Electrochemical Techniques
Electrolytes / chemistry*
Equipment Design
Ether / chemistry*
Halogenation
Lithium / chemistry*
Porosity
Sulfur / chemistry*
Thiosulfates / chemistry
Ultrasonics

Substances

Electrolytes
Thiosulfates
Ether
Sulfur
Carbon
Lithium
sodium thiosulfate