Authors
Kondori, Alireza; Esmaeilirad, Mohammadreza; Harzandi, Ahmad; Amine, Rachid; Saray, Mahmoud; Yu, Lei; Liu, Tongchao; Wen, Jianguo; Shan, Nannan; Wang, Hsien-Hau; Ngo, Anh; Redfern, Paul; Johnson, Christopher; Amine, Khalil; Shahbazian-Yassar, Reza; Curtiss, Larry; Asadi, Mohammad
Abstract
A lithium-air battery based on lithium oxide (Li2O) formation can theoretically deliver an energy density that is comparable to that of gasoline. Lithium oxide formation involves a four-electron reaction that is more difficult to achieve than the one-and two-electron reaction processes that result in lithium superoxide (LiO2) and lithium peroxide (Li2O2), respectively. By using a composite polymer electrolyte based on Li10GeP2S12 nanoparticles embedded in a modified polyethylene oxide polymer matrix, we found that Li2O is the main product in a room temperature solid-state lithium-air battery. The battery is rechargeable for 1000 cycles with a low polarization gap and can operate at high rates. The four-electron reaction is enabled by a mixed ion-electron-conducting discharge product and its interface with air.