Spreading the Landscape of Dual Ion Batteries: from Electrode to Electrolyte

Abstract

The working mechanism of a dual-ion battery (DIB) differs from that of a lithium-ion battery (LIB) in that the anions in the electrolyte of the former can be intercalated as well. Researchers have been paying close attention to this device because of its high voltage, low price, and environmental friendliness. However, DIBs are still in their early research stages, and numerous issues need to be addressed and investigated further. Initially, this Review explains how DIBs work in principle and discusses the progress of electrode materials for cathode and anode. Furthermore, since the electrolytes used as the active material, as well as anion, solvent, and additives, have a significant impact on the DIB's capacity and voltage, the current status is also presented in terms of electrolytes, followed by an outlook on confronting the challenges. A comprehensive summary from electrode to electrolyte will guide the development of next-generation DIBs.

Perspective of Vanadium Disulfide: A Rising Star Finds Plenty of Room in Single and Multielectron Energy Storage

“…The electrolyte affects the energy and power density, safety, and cycle life of the battery. , Adjusting the action of the electrolyte can be improved by reducing the interaction between metals and solvents or by forming an activation layer on the electrode surface to achieve high-capacity storage. − It is also worth considering that the salt solution containing different anions and the concentration of the salt solution will have different effects on the results. For example, in Zn­(CF 3 SO 3 ) 2 and ZnSO 4 solutions, the electrochemical deposition/dissolution of Zn is reversible, whereas in ZnCl 2 and Zn­(NO 3 ) 2 solutions, different processes were observed.…”

Elucidating the Origin of the Low Anion Intercalation Potential of Graphene-like Graphite: A DFT Study

“…However, the transition metal oxides used in the cathode of LIBs are environmentally hazardous and have severe resource constraints, as well as their low thermal stability which triggers thermal runaway. − In this term, dual carbon batteries (or dual ion batteries, or DIBs) are expected as new batteries alternative to the LIBs. − In DIB, the cathode reaction of LIB is replaced by anion intercalation/deintercalation reaction into/from carbon materials, which can overcome the shortcomings of the LIB cathodes. Thus far, graphite has been mainly considered as the cathode active material of DIBs, and various anions such as PF 6 – , − ClO 4 – , , BF 4 – , bis­(trifluoromethanesulfonyl)­amide (TFSA or TFSI), − and bis­(fluorosulfonyl)­amide (FSA or FSI) − were found to electrochemically intercalate into it. However, the anion intercalation capacity into graphite was generally small, and in addition, the high onset potential of the reaction led to oxidative decomposition of the electrolyte solution. − …”

“…Thus far, graphite has been mainly considered as the cathode active material of DIBs, and various anions such as PF 6 – , − ClO 4 – , , BF 4 – , bis­(trifluoromethanesulfonyl)­amide (TFSA or TFSI), − and bis­(fluorosulfonyl)­amide (FSA or FSI) − were found to electrochemically intercalate into it. However, the anion intercalation capacity into graphite was generally small, and in addition, the high onset potential of the reaction led to oxidative decomposition of the electrolyte solution. − …”

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

“…8,9 (2) Developing new batteries with intrinsic merits of capacity and energy density such as lithium metal batteries (LMBs) and dual ion batteries (DIBs). 10,11 Nevertheless, electrodes are the key component for lithium rechargeable batteries (LIBs, LMBs and DIBs). For instance, alloying type electrodes, i.e., silicon (Si), tin (Sn), and aluminium (Al), have drawn significant interest in recent years in realizing high-energy Li-based batteries.…”

“…8,9 (2) Developing new batteries with intrinsic merits of capacity and energy density such as lithium metal batteries (LMBs) and dual ion batteries (DIBs). 10,11…”