dc.contributor.advisor |
Boettcher, Shannon |
|
dc.contributor.author |
Stovall, Nathan |
|
dc.contributor.author |
Stovall, Nathan |
|
dc.contributor.author |
Krivina, Raina |
|
dc.contributor.author |
Boettcher, Shannon |
|
dc.date.accessioned |
2020-08-11T17:36:32Z |
|
dc.date.available |
2020-08-11T17:36:32Z |
|
dc.date.issued |
2020 |
|
dc.identifier.uri |
https://scholarsbank.uoregon.edu/xmlui/handle/1794/25527 |
|
dc.description |
Project files include 1 page pdf. |
|
dc.description.abstract |
Ultrathin Iridium Oxide Catalyst on a Conductive Support for the Oxygen Evolution Reaction in Acid ABSTRACT Anthropogenic climate change has driven interest in the research and development of clean energy alternatives. Great advancements in renewable energy production have been made, but its intermittent nature requires the development of a large-scale storage technology. Water electrolysis is a promising solution to the storage dilemma, via the state-of-the-art proton exchange membrane (PEM) electrolyzers that can convert renewable energy into hydrogen fuel. However, the acidic operating conditions of PEM cells results in slow kinetics of the oxygen evolution reaction (OER). Iridium oxide is the only catalyst capable of withstanding these harsh conditions, but its low abundance and high costs limit large-scale implementation. My research focuses on designing a novel sub-monolayer-thick iridium oxide catalyst on an inexpensive conductive support that would allow to decrease iridium loading while maximizing activity. |
en_US |
dc.description.sponsorship |
We have developed a novel synthetic method for adhering a cheap commercially available iridium precursor (IrCODCl dimer) to the surfaces of inexpensive acid-stable metal oxide nanoparticles. The mechanism of the assembly was investigated with UV-vis spectroscopy, X-ray photoelectron spectroscopy, and NMR. We discovered that the dimer attaches in a surface-limited manor allowing for precise control over the catalyst’s thickness. The determination of the mass loadings was accomplished via x-ray fluorescence and ex-situ inductively coupled plasma induced mass spectroscopy. Electrochemical measurements conducted in pH 1 have shown exceptionally high intrinsic activity at significantly reduced mass loadings. We are currently working on improving the catalyst’s stability which might in the future allow for industrial-scale implementation of water electrolysis as renewable energy storage. |
|
dc.format.mimetype |
Stovall_Nathan_2020urs.mp4 |
|
dc.format.mimetype |
Stovall_Nathan_2020urs.pdf |
|
dc.language.iso |
en_US |
|
dc.publisher |
University of Oregon |
|
dc.rights |
Creative Commons NSF, Phil and Penny Knight Campus for Accelerating Scientific Impact |
|
dc.subject |
Chemistry |
en_US |
dc.subject |
Materials Science |
en_US |
dc.subject |
Water splitting |
en_US |
dc.subject |
Renewable Energy |
en_US |
dc.subject |
Water Electrolysis |
en_US |
dc.title |
Ultrathin Iridium Oxide Catalyst on a Conductive Support for the Oxygen Evolution Reaction in Acid |
|
dc.type |
Presentation |
|
dc.identifier.orcid |
CC BY-NC-ND 4.0 |
|