Authors
Snehashis Choudhury, Snehashis Choudhury
Publication date
2019
Journal
Rational Design of Nanostructured Polymer Electrolytes and Solid–Liquid Interphases for Lithium Batteries
Pages
95-116
Publisher
Springer International Publishing
Description
Secondary batteries based on earth-abundant sodium metal anodes are desirable for both grid-level, stationary storage and for portable electrical energy storage. Room-temperature sodium metal batteries are impractical today because morphological instability during battery recharge leads to dendritic electrodeposition. Chemical instability of liquid electrolytes in contact with metallic sodium also leads to premature cell failure by depleting the electrolyte and electrode via parasitic reactions. Here we show by means of joint density-functional theoretical analysis that the surface diffusion barrier for ion transport across a metal/liquid interface is a sensitive function of the chemistry of solid electrolyte interphase. In particular, we find that a sodium bromide interphase presents an exceptionally low energy barrier to ion transport, comparable to that of metallic magnesium, which can be recharged in liquid …
Scholar articles
S Choudhury, S Choudhury - … Design of Nanostructured Polymer Electrolytes and …, 2019