"Bifunctional Effects of Cation Additive on Na-O sub 2 /sub Batteries" by Shuo Zhao, Chenchen Wang et al.
Abstract Aprotic Na-O batteries have attracted growing interest owing to their low overpotentials and high energy density. Their cycling stability and Coulombic efficiency are limited, however, by Na dendrite formation and superoxide (O ) degradation. Here, we present a bifunctional cation additive, the tetrabutylammonium cation (TBA ), to simultaneously protect the Na anode and stabilize the superoxide. The adsorption of TBA on the Na anode suppresses the dendrite formation in the Na plating and ensures stable anode cycling at high current density in both Ar and oxygen atmospheres. Aprotic...
Source: uow.edu.au