Designing solid-electrolyte interphases for lithium sulfur electrodes using ionic shields

Ionically shielding nanomaterial composite artificial solid electrolyte interphases (ASEI) are developed for Li-S electrodes. ASEI composed of negatively-charged nanoparticles on Li stabilizes lithium deposition by multiple fundamental mechanisms. The similar concept is used to design interphases composed of positively-charged conductive nanoparticles at the cathode and shown to be effective at intercepting dissolved polysulfide anions and for enhancing active material reutilization. These electrodes' ASEI provide long-term stability for Li-S batteries.159