Public defence in Physical Chemistry, M.Sc. (Tech.) Zahra Ahaliabadeh

Title of the thesis: Stabilized Nickel Rich Layered Oxide Electrodes for High Performance Lithium-Ion Batteries

Doctoral student: M.Sc. (Tech.) Zahra Ahaliabadeh
Opponent: Dr. Jeffrey W. Elam, University of Chigaco, Argonne National Laboratory, Illinois, US
Custos: Professor Tanja Kallio, Aalto University School of Chemical Engineering

Stabilized Positive Electrodes for High Performance Lithium-Ion Batteries

The rise of electric vehicles and renewable energy storage solutions has brought increased attention to the need for better, longer-lasting batteries. This doctoral research tackles a key challenge in this field: how to make lithium-ion batteries more efficient and durable.

Over time, lithium-ion batteries, commonly used in electric vehicles and electronics, face performance issues. Their efficiency decreases due to the degradation of the electrode materials, particularly nickel-rich cathodes, which offer high energy density but degrade quickly. This dissertation addresses this problem by developing innovative coating strategies to protect nickel-rich cathode materials. It explores different coatings applied through atomic layer deposition as a surface modification technique to stabilize materials, reduce unwanted side reactions, and enhance overall battery performance. The findings could lead to longer-lasting, more efficient batteries, crucial for extending the range of electric vehicles and improving energy storage systems. By preventing the rapid degradation of battery materials, these innovations have the potential to accelerate advancements in how energy is stored and used. Beyond its practical contributions, this research supports global efforts to advance sustainable energy technologies and opens the door for further studies on how surface modifications can improve battery stability and lifespan. This work represents a significant step forward in the pursuit of more efficient, sustainable energy storage solutions.
 

→Thesis available for public display 10 days prior to the defence

Contact information:
M.Sc. (Tech.) Zahra Ahaliabadeh
[email protected]

→Doctoral theses in the School of Chemical Engineering

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