The Problem: Lithium-ion batteries are currently the state-of-the-art technology for energy storage for their light weight, high energy density, and compact design. For these reasons, most electric vehicles and rechargeable devices utilize lithium-ion battery technology. However, safety is a concern and battery fires have led to the recall of cell phones, airplanes, and electric vehicles. Thin-film membranes (called separators) in batteries are not easily wetted by the viscous electrolytes used. Highly flammable thinning agents are added to the liquid component of the battery to help wet the separators, giving rise to lithium-ion battery fires.

Hydrophilix Solution: With a Hydrophilix-coated separator, electrolytes without thinning agents can be utilized, producing non-flammable lithium-ion batteries. To demonstrate this visually below, we have taken two porous polyolefin separators and coated one (right) with the Hydrophilix coating. A non-flammable electrolyte is poured over both.