Fundamentals of Electrochemical Interfaces: Insights into Electrodes, Electrolytes, and Ion Transfer Kinetics
| dc.contributor.advisor | Boettcher, Shannon | |
| dc.contributor.author | Zhao, Yang | |
| dc.date.accessioned | 2024-08-07T21:55:02Z | |
| dc.date.available | 2024-08-07T21:55:02Z | |
| dc.date.issued | 2024-08-07 | |
| dc.description.abstract | Electrochemistry is a field that lies at the crossroads of electricity and chemistry, focusing on the transformation between electrical and chemical potentials, typically occurring at the electrochemical interfaces - the dynamic region between electrode (electron conductors) and electrolyte (ionic conductors) where electrons are transferred, and ions/molecules are converted. The performance of modern electrochemical technologies for energy conversion and storage, which presents promising approaches for reducing pollutants and facilitating environmentally sustainable chemical processing, relies on a deeper and more profound comprehension of the electrochemical interfaces, specifically at atomic/molecular-scale and in relation to the fundamental steps of the interfacial reactions. However, even in a simple or elementary electrochemical system, the fundamental investigation is challenging, as the processes and the mechanisms that underlie them are complex. The presence of multiple phases contributes to the complexity, which is further amplified when taking into account the interaction of numerous factors influenced by varying potential bias which results in a potential gradient across the interface and the accompanying electric fields. This dissertation provides a comprehensive exploration of electrochemical interfaces, by delving into three fundamental aspects: electrodes, electrolytes, and ion transfer kinetics, each contributing significantly to our comprehensive understanding of electrochemical systems. We illustrate the underlying operational mechanism and design principles for porous carbon electrodes in redox-enhanced electrochemical capacitors. Additionally, we quantitatively assess how thermodynamics, kinetics, and interface layers control the apparent hydrogen evolution reaction activities in water-in-salt electrolytes. Furthermore, for the first time, we experimentally measured and determined the ion-transfer kinetic parameters using a model system of Ag electrodissolution and electrodeposition. Together, this dissertation provides key insights into the fundamental mechanisms that drive electrochemical systems, potentially contribute to the future innovations in energy technologies. This dissertation includes previously published co-authored materials. | en_US |
| dc.identifier.uri | https://hdl.handle.net/1794/29775 | |
| dc.language.iso | en_US | |
| dc.publisher | University of Oregon | |
| dc.rights | All Rights Reserved. | |
| dc.subject | Electrochemistry | en_US |
| dc.subject | Fundamentals | en_US |
| dc.subject | Interfaces | en_US |
| dc.title | Fundamentals of Electrochemical Interfaces: Insights into Electrodes, Electrolytes, and Ion Transfer Kinetics | |
| dc.type | Electronic Thesis or Dissertation | |
| thesis.degree.discipline | Department of Chemistry and Biochemistry | |
| thesis.degree.grantor | University of Oregon | |
| thesis.degree.level | doctoral | |
| thesis.degree.name | Ph.D. |
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