Study and Development of Nonaqueous Electrolytes for Aluminum-air Batteries

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PhD. Candidate Ms. Natasha Ronith Levy




Aluminum (Al) is one of the most promising anode materials to serve in the post-Lithium-ion battery era thanks to its electrochemical properties, inexpensive cost, and well-known recycling process.[1] However, the native oxide film on the Al surface challenges the electrochemical research community, as it prevents the Al anode from delivering high anodic currents. Our study presents the use of aprotic organic solvent-based electrolytes in Al-air battery systems. The presence of the fluoro-hydrogenate anions, previously reported as efficient Al surface activators, is being mimicked using tetra-butyl ammonium fluoride (TBAF) and tetra-butyl ammonium dihydrogen tri-fluoride (TBAH2F3) as additives. In addition to the aluminum surface characterization performed, the thorough electrochemical studies exhibit a promising, cost-effective electrolyte.[2,3] Moreover, advanced hybrid carbon nanotube (CNT) – manganese dioxide (MnO2) air cathodes were developed and utilized in various metal-air batteries, including Al, lithium (Li), and zinc (Zn)-based systems, resulting in a significant improvement in the overall performance. The results were supported and explained using advanced electrochemical and surface characterization methods along with density functional theory (DFT) calculations.[4]

[1] N. R. Levy, Y. Ein-Eli, J. Solid State Electrochem. 2020.
[2] N. R. Levy, Y. Ein-Eli, et al., Energy Storage Mater. 2018, 15, 465.
[3] N. R. Levy, Y. Ein-Eli, et al., ACS Appl. Energy Mater. 2020, 3, 2585.
[4] N. R. Levy, Y. Ein-Eli, et al., submitted to Adv. Energy Mat., 2021.

Supervisor: Prof. Yair Ein-Eli

The lecture will take place in room 302, Meidan, for green pass holders, or via ZOOM.

Meeting ID: 995 9239 6977

Passcode: mt302m