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X-ray Absorption Spectroscopy and Powder X-ray Diffraction Studies on Green Energy Materials

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Title: X-ray Absorption Spectroscopy and Powder X-ray Diffraction Studies on Green Energy Materials
Author: McGuire, Cameron
Department: Department of Physics
Program: Physics
Advisor: Jiang, De-Tong
Abstract: A world relying on green energy systems is on the horizon. This study focuses on the improvement of novel material components for two green energy solutions: Li-ion battery cathodes and a hydrogen storage system for hydrogen fuel cells. Li2Fe0.5Mn0.5SiO4 has been proposed as a potential new Li-ion battery cathode material due to its inexpensive cost, safety, and high theoretical capacity, however, structural changes during charge and discharge have been seen to affect its longevity. Additionally, a promising hydrogen fuel cell material of palladium (Pd) nanoparticles on a reduced graphene oxide (rGO) substrate have shown to be a good material for hydrogen storage. Interestingly, doping the rGO with a dopant has altered the Pd nanoparticle formation, increasing capacity (3-fold in the case of a boron dopant). Therefore, synchrotron-based X-ray absorption spectroscopy and powder X-ray diffraction were used to understand the structural properties of these materials to further improve them.
Date: 2022-12
Rights: Attribution-ShareAlike 4.0 International

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Attribution-ShareAlike 4.0 International Except where otherwise noted, this item's license is described as Attribution-ShareAlike 4.0 International
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