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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 19: Energy Storage and Batteries II

CPP 19.4: Vortrag

Dienstag, 19. März 2024, 10:15–10:30, H 0111

Composite Cathode Materials for Improved Iono-Polymer Aluminium Batteries — •Shuvrodev Biswas, Thomas Köhler, Amir Mohammad, Hartmut Stöcker, and Dirk C. Meyer — Institute of Experimental Physics, TU Bergakademie Freiberg

Aluminium batteries are one significant candidate for “post-lithium” batteries due to their exceptional performance in terms of theoretical capacity and cyclability, as well as the inherent advantages of aluminium metal, such as its good availability and low cost. Nevertheless, mass production is still hindered because of several challenges, such as lack of suitable cathode materials, and electrolytes. In search of a better cathode-electrolyte combination, this study investigates several composites based on 9, 10-phenanthrenequinon (PQ) and different graphite modifications synthesized by melt infiltration as novel cathode materials in combination with iono-polymer electrolytes based on triethylamine hydrochloride, polyamide, and aluminium chloride. The electrochemical analysis shows a significant performance boost of the specific capacity with superior rate capability and life cycle when compared to pure graphite or pure PQ. FTIR spectroscopy results also confirm better stability of the composite cathode than the pure PQ cathode. This research highlights the essential electrochemical features of aluminium batteries and serves as the foundation for a new research route using composite cathodes for improved aluminium battery systems.

Keywords: Iono-polymer electrolytes; Organic composite cathode; Aluminum batteries