Development of cathode materials for li-ion batteries by sputter deposition

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2022-2-10

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Erdoğan, Erdem Erkin

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The electrochemical performance of Li-ion batteries depends mostly on the cathode material. Cobalt has a huge impact on electrochemical properties and is widely used in cathode materials, but due to its toxicity and cost, recent research is focused on reducing the amount of cobalt in cathode materials. In this study, cathode active materials are produced by magnetron sputtering to obtain the optimum amount of cobalt while optimizing the electrochemical properties. Pechini sol-gel method is used to produce powders which are then used to produce sputtering targets by cold pressing and sintering. Both targets’ and deposited electrodes’ structural and morphological characterization were done by scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy dispersive spectroscopy (EDS). The resultant compounds are used to produce battery cathodes via magnetron sputtering. Electrochemical characterization was done by galvanostatic charge-discharge tests and cyclic voltammetry (CV) to focus on discharge capacity and discharge energy of the cathode materials.

Subject Keywords

Li-ion battery, Cathode, Magnetron sputter deposition, Combinatorial

URI

https://hdl.handle.net/11511/96678

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

E. E. Erdoğan, “Development of cathode materials for li-ion batteries by sputter deposition,” M.S. - Master of Science, Middle East Technical University, 2022.