Application‐Based Prospects for Dual‐Ion Batteries

Abstract

Dual‐ion batteries (DIBs) exhibit a distinct set of performance advantages and disadvantages due to their unique storage mechanism. However, the current cyclability/energy density tradeoffs of anion storage paired with the intrinsic required electrolyte loadings of conventional DIBs preclude their widespread adoption as an alternative to lithium‐ion batteries (LIBs). Despite this, their reduced desolvation penalty and low‐cost electrode materials may warrant their employment for low‐temperature and/or grid storage applications. To expand beyond these applications, this Perspective reviews the prospects of solid salt storage and halogen intercalation‐conversion as viable methods to increase DIB energy densities to a level on‐par with LIBs. Fundamental limitations of conventional DIBs are examined, technology spaces are proposed where they can make meaningful impact over LIBs, and potential strategies are outlined to improve cell‐level energy densities necessary for the widespread adoption of DIBs.

Toward a quantitative interfacial description of solvation for Li metal battery operation under extreme conditions

“…To further understand the impacts of increasing the number of electrode layers, we apply a pouch cell energy density projection model which was modified based on the 18650 model published by Betz et al and applied in our previous work ( 29 , 59 , 60 ). As shown in SI Appendix , Fig.…”

Al-based materials for advanced lithium rechargeable batteries: recent progress and prospects

“…This viewpoint focuses on dual-ion batteries (DIBs), in which both the cations and anions are involved in the battery reaction. [103][104][105] The working mechanism is demonstrated as follows: 106,107 Anode: Al + Li + + e À 2 AlLi (1)…”

“…This viewpoint focuses on dual-ion batteries (DIBs), in which both the cations and anions are involved in the battery reaction. 103–105…”

Anion-hosting cathodes for current and late-stage dual-ion batteries

“…Dual-ion batteries (DIBs), in which anions and cations from the electrolyte react with the cathodes and anodes simultaneously, have received considerable research attention in recent years [6,[15][16][17]. Anionic reactive electrodes on the cathode and cationic reactive electrodes on the anode make up DIBs, which differs from LIBs in that the electrolyte's anions and cations react concurrently during the battery reaction.…”