Efficient Biorenewable Membranes in Lithium-Oxygen Batteries.

Lithium-oxygen batteries, with their very high energy density (3500 Wh kg), could represent a real breakthrough in the envisioned strategies towards more efficient energy storage solutions for a less and less carbonated energy mix. However, the problems associated with this technology are numerous. A first one is linked to the high reactivity of the lithium metal anode, while a second one is linked to the highly oxidative environment created by the cell's O saturation.