Ultrasonic sound assisted processing and characterization of Li(Ni-Co-Al) oxide as cathode active material for Li-Ion Batterıes

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2017

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Savaş, Cansu

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Layered LiNiO2 compared to its commercial counterpart LiCoO2, has higher energy density and lower cost. However, it is difficult to synthesize and has stability and safety problems. These properties were improved with alloying, and today LiNi0.8Co0.15Al0.05O2 (NCA) electrode material is commercially produced. However, it is still not considered as safe, due to inherent chemistry and morphological particle characteristics. In this study, LiNiXCoyAlzMvO2 compounds (M=Na, Ca, Fe, Cu, Cr, La, Y, V, Zr) will be synthesized. In order to control crystallite and particle sizes, morphology and size distribution, ultrasonic sound assisted (co/sequential)-precipitation method will be utilized. Synthesized NCA cathode active materials will be characterized using PSA, SEM, XRD, EDS, ICP, EIS and galvanostatic charge discharge tests, focusing on the improvement of capacity, cycle life, safety and rate capability

Subject Keywords

Lithium ion batteries., Sonochemistry., Ultrasonics., Cathodes.

URI

http://etd.lib.metu.edu.tr/upload/12621359/index.pdf
https://hdl.handle.net/11511/26759

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

C. Savaş, “Ultrasonic sound assisted processing and characterization of Li(Ni-Co-Al) oxide as cathode active material for Li-Ion Batterıes,” M.S. - Master of Science, Middle East Technical University, 2017.