Status : Verified
| Personal Name | Cabading, Mark Verndick A. |
|---|---|
| Resource Title | Preparation and characterization of Ni-Co Oxide-Based Powder and Thin Films from Spent Lithium Nickel Cobalt Aluminum Oxide (NCA) Cathode |
| Date Issued | 9 January 2025 |
| Abstract | This study presents a simple and environmentally friendly method for preparing homogeneous, small-particle-size, crystalline nickel (Ni) and cobalt (Co) oxide-based precursors from spent nickel-cobalt-aluminum (NCA) cathode materials. By selectively removing lithium (Li) and aluminum (Al), the study aims to create a facile and sustainable alternative process to obtain a mixed Ni-Co oxide precursors as alternative to conventional methods like co-precipitation, addressing the growing spent or waste LiBs from increasing numbers of electric vehicle (EV) in the Philippines. The developed process involved metal removal, powder preparation with different particle sizes, and screen-printing to fabricate Ni-Co oxide films for potential application as catalysts in lithium-oxygen batteries (LOBs). Key results include achieving a high-purity Al removal (99.91%), a Ni:Co ratio of 85:15, and mixed Ni-Co oxide phases as analyzed via X-ray diffraction, Raman spectroscopy, XRF and ICP-OES. Ball-milling effectively reduced particle size, about 171.7 nm average particle size, yielding porous and homogeneous screen-printed films with a porosity of about 43.33%. SEM-EDS analysis revealed good and homogeneous deposition, with particle size influencing the film thickness. The milled powder with 171.7 nm, 296.5 nm, and 537 nm particle sizes produced thin films averaging 5.50 µm, 7.06 µm, and 7.93 µm on carbon cathode substrates, respectively. |
| Degree Course | Master of Science in Metallurgical Engineering |
| Language | English |
| Keyword | Batteries; battery recycling; Nickel-Cobalt oxide; cathodes |
| Material Type | Thesis/Dissertation |
Preliminary Pages
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Category : I - Has patentable or registrable invention of creation.
Access Permission : Limited Access