Despite the excellent specific capacity (1672 mAh/g) and energy density (2567 Wh/kg), sulfur has several challenges that prevent the material from achieving commercial status. The primary setback with sulfur is its insulating property. The second detrimental problem is the dissolution of intermediate charge/discharge lithium polysulfide (Li₂S_x) products in the electrolyte that leads to decreased utilization of sulfur, triggering parasitic side reactions with Li metal anode, poor cycle life. Hence, the design of electrolytes with lower solubilizing power for Li₂S_x is perhaps the most straightforward and valid approach to suppress Li₂S_x deduced redox shuttle. A liquid electrolyte designed for this purpose should act as a poor solvent for all of the Li₂S_x species of the sulfur cathode, while enabling good Li-ion conduction by the originally doped Li salts. Given that the active species exhibit a wide range of hydrophilic−hydrophobic character: sulfur (hydrophobic, soluble in nonpolar solvents), lithium sulfide (soluble in highly polar solvents) and polysulfide species (intermediate solubility depending on the chain length). At NOHMs Technologies Inc, we have been developing functional ionic liquids as electrolyte additives in conjunction with novel cathode architectures to improve the Li-S battery performance. NOHMs has already demonstrated Li-S pouch cells that has exhibited full-cell specific energy density above 300 Wh/kg and excellent abuse tolerance during standard nail penetration tests.  Figure 1 depicts the NOHMs Li-S cell level performance. This presentation will focus on the ongoing R&D work at NOHMs in maturing the Li-S battery chemistry.