Dissertation
Interfacial processes that govern the pH dependence of the electrocatalytic reversible hydrogen reaction
Doctor of Philosophy (Ph.D.), Drexel University
Sep 2020
DOI:
https://doi.org/10.17918/00000053
Abstract
The hydrogen reaction rates on Pt and other catalysts are facile at low pH, however, the kinetics are found to be several orders of magnitude slower in base. The explanation for this unusual pH dependence has been controversial within the scientific community and limits both fundamental science and applied catalyst design. Traditionally, hydrogen binding energy (HBE) has been used as the sole activity descriptor, independent of electrolyte pH. This alone, however, is not enough to describe the pH dependence of the HER/HOR activity on metals other than Pt. The goal of this work is to uncover the source of the strong pH dependence for reversible hydrogen electrocatalysis. We have put forth in this dissertation a logical progression from fundamental experimental investigations of the chemical and physical processes occurring at the interface to the design of highly active electrocatalyst materials for the alkaline medium.
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Details
- Title
- Interfacial processes that govern the pH dependence of the electrocatalytic reversible hydrogen reaction
- Creators
- Saad Intikhab
- Contributors
- Joshua Snyder (Advisor)
- Awarding Institution
- Drexel University
- Degree Awarded
- Doctor of Philosophy (Ph.D.)
- Publisher
- Drexel University; Philadelphia, Pennsylvania
- Number of pages
- xvii, 212 pages
- Resource Type
- Dissertation
- Language
- English
- Academic Unit
- Chemical (and Biological) Engineering (1970-2026); College of Engineering (1970-2026); Drexel University
- Other Identifier
- 991014695147504721