Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
DOI: https://doi.org/10.29363/nanoge.matsus.2024.068
Publication date: 18th December 2023
Can aluminum batteries promise enhanced energy density compared to other technologies? The key to high energy density lies not only in the transport of three charges per ion and in the design of a suitable cathode material but also in the (efficient) use of metallic aluminum as the negative electrode.
Currently used electrolytes for aluminum batteries (AlCl3/EMimCl acidic mixtures) can enable plating and stripping but they are extremely corrosive [1]. This drawback opens serious challenges for the choice of components (current collectors, binders, separators, active materials) that are stable in such a corrosive environment. This crucial issue urges to be overcome to advance Al batteries from simple scientific curiosity to real competitors in the realm of energy storage systems. On the one hand, one strategy is to identify corrosive-resistant components, and on the other hand to develop non-corrosive and benign electrolyte compositions [2]. This presentation will give an overview of the current challenges and propose some solutions in terms of materials and combinations to advance the Aluminum battery technology.
This work contributes to the research performed at CELEST (Center for Electrochemical Energy Storage Ulm-Karlsruhe) and was funded by the German Research Foundation (DFG) under Project ID 390874152 (POLiS Cluster of Excellence).
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