Date of Award
Spring 5-15-2026
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Materials Science
First Advisor
Dr. Ram k. Gupta
Second Advisor
Dr. Serif Uran
Third Advisor
Dr. Tim Dawsey
Keywords
Microwave reaction, ZnMn2O2@ZnO composite, Anode, High-capacity, Lithium-ion batteries.
Abstract
The Lithium-ion batteries (LIBs) are widely utilized in portable electronics and electric/hybrid electric vehicles. However, the limited theoretical capacity of graphite (372 mA h g⁻¹) restricts further advancements. In our recent work, a series of ZnMn2O4 materials with various additives were synthesized using the microwave reaction method and evaluated as anodes for LIBs. Additives such as 2-methylimidazole (2MIM), polyvinyl alcohol (PVA), and cetyltrimethylammonium bromide (CTAB) were employed to prepare ZnMn2O4 with distinct morphologies. Our findings revealed that ZnMn2O4 with pure phases was achieved when 2MIM and CTAB were used as additives. In contrast, the ZnMn2O4 /ZnO composite phase was obtained when PVA was utilized. Among all the electrodes tested, the ZnMn2O4 /ZnO composite demonstrated an impressive discharge capacity of 762 mA h g⁻¹ at a current density of 500 mA g⁻¹ over 500 cycles. Additionally, the ZnMn2O4 - 2MIM- and ZnMn2O4 - CTAB electrodes delivered discharge capacities of 583 mA h g⁻¹ and 700 mA h g⁻¹, respectively. The superior electrochemical performance of the ZnMn2O4 /ZnO composite can be attributed to the synergy of its multiple phases, where ZnMn2O4 contributes to high capacity and ZnO enhances stability. These results underscore the potential of ZnMn2O4 /ZnO composites as high-performance anode materials for next-generation LIBs.
Recommended Citation
Singh, Anirudh, "SURFACE DIRECTED MICROWAVE ASSISTED FABRICATION OF ZnMn2O4 AND ITS COMPOSITE AS ANODE MATERIALS FOR LITHIUM ION BATTERY" (2026). Electronic Theses & Dissertations. 845.
https://digitalcommons.pittstate.edu/etd/845
