All-Solid-State Sodium-ion Batteries: A Leading Contender in the Next-Generation Battery Race
Ruijie Zhu, Zhouyang Li, Wei Zhang, Akira Nasu, Hiroaki Kobayashi, Masaki Matsui
Abstract
All-solid-state lithium-ion batteries (LIBs) using ceramic electrolytes are considered the ideal form of rechargeable batteries due to their high energy density and safety. However, in the pursuit of all-solid-state LIBs, the issue of lithium resource availability is selectively overlooked. Considering that the amount of lithium required for all-solid-state LIBs is not sustainable with current lithium resources, another system that also offers the dual advantages of high energy density and safety— all-solid-state sodium-ion batteries (SIBs) —holds significant sustainable advantages and is likely to be the strong contender in the competition for developing next-generation high-energy-density batteries. This article briefly introduces the research status of all-solid-state SIBs, explains the sources of their advantages, and discusses potential approaches to the development of solid sodium-ion conductors, aiming to spark the interest of researchers and attract more attention to the field of all-solid-state SIBs.