Lithium-sulfur batteries are considered as one of the most promising battery chemistries for the next generation electrochemical energy storage. Due to remaining challenges with respect to lithium polysulfide dissolution and subsequent redox shuttling/active material loss, current lithium-sulfur batteries remain unviable for wide applications in both electric vehicle and stationary electrical grid. In the recent years, several electrolytes and electrolyte additives have been reported using a fluorinated ether based compound to address the issues associated with polysulfide dissolution/shuttling and fast capacity fading, however the exact function and the structure-property correlation of these fluorinated ethers remain largely unknown. Current efforts from our group in this area have expanded to new fluorinated ethers with different degrees and patterns of fluorination and various skeletal structures of substitutions. One area is the fluorinated aliphatic ether based solvents with inspiration drawn from previously reported 1,1,2,2-tetrafluoroethyl 2,2,3,3-tetrafluoropropyl ether (TTE). A quick overview of the research into a newly designed fluorinated benzyl ether based solvents will also be presented which have been investigated by our group to further mitigate the polysulfide dissolution due to the strong interaction between the fluorinated benzyl group and the polysulfide anions.