Amide-based Al electrolytes and their application in Al metal anode-organic batteries

Raić, Matea; Lužanin, Olivera; Jerman, Ivan; Dominko, Robert; Bitenc, Jan (2024) Amide-based Al electrolytes and their application in Al metal anode-organic batteries. Journal of Power Sources, 624 . ISSN 0378-7753

PDF - Published Version - article Available under License Creative Commons Attribution. Download (2MB)

Abstract

Aluminum rechargeable batteries are seen as a next-generation battery technology based on abundant materials. However, the current standard Al electrolytes are based on expensive ionic liquids. In this paper, the potential use of three AlCl3/amide-based electrolytes is investigated as a low-cost alternative from the perspective of Al metal anode and organic cathode compatibility. Our investigation shows the promising electrochemical performance of amide electrolytes and specific differences between the electrolytes depending on amide alkyl chain length. In particular, amides with longer alkyl chains show better plating/stripping efficiency and lower overpotential compared to the shorter acetamide one. Similarly, organic cathode capacity retention is the best for the electrolyte with the longest alkyl chain. However, the cathode capacity retention is subpar to the standard ionic liquid-based Al electrolyte although it undergoes the same electrochemical mechanism of carbonyl bond reduction. Interestingly, there is no deterioration of the anthraquinone redox peak through the appearance of a side peak at a lower potential in amide-based electrolytes, which is observed in standard electrolyte based on ionic liquid. Amide-based electrolyte display promise for practical applicability, however, the low oxidation stability of amide-based electrolytes is identified as one of their key limitation and should be addressed in future work.

Item Type:	Article
Uncontrolled Keywords:	Al electrolytes; Amides; Deep eutectic solvents; Al metal anode; Organic cathode; Electrochemical mechanism
Subjects:	NATURAL SCIENCES > Physics
Divisions:	Division of Materials Physics
Projects:	Project title Project leader Project code Project type Potpora vrhunskim istraživanjima Centra izvrsnosti za napredne materijale i senzore- Mile Ivanda; Milko Jakšić; Mario Stipčević; Marko Kralj KK.01.1.1.01.0001 EK
Depositing User:	Lorena Palameta
Date Deposited:	07 Nov 2024 12:38
URI:	http://fulir.irb.hr/id/eprint/9262
DOI:	10.1016/j.jpowsour.2024.235575

Actions (login required)

View Item