Atomic layer deposition of earth abundant electrocatalysts for the oxygen evolution reaction
Abstract/Contents
- Abstract
- Due to its intermittent nature, large-scale adoption of solar energy requires new technological advancements to efficiently store and distribute energy. The photoelectrochemical (PEC) splitting of water is a promising way to capture solar energy and store it in the form of chemical bonds. We look at leveraging the advantages of ALD, a technique well known in the microelectronics industry, to address some of the most pressing issues in PEC water splitting. In particular, the focus of our studies is the development of catalysts to drive the oxygen evolution reaction (OER), a reaction typically associated with high overpotentials and sluggish kinetics. We first investigate known active transition metal oxide catalysts, exploring how to enhance their activity with higher surface area and through electronic effects. We create highly active electrocatalysts of both MnOx and NiOx, and discuss some of the advantages and limitations of using ALD to deposit these films. Next, we focus on using ALD to manage charge transport limitations in semiconducting oxide thin films. We demonstrate the sensitivity of semiconducing thin films to film thickness using ALD TiO2 as a model material. We then show how ALD can be used to explore new semiconducting oxide catalysts, focusing on a Ti-Mn oxide system. We also discuss the integration of these catalysts into PEC devices, with an emphasis on the role of stability, oxidation, and surface area in enhancing the OER activity for photoanodes.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2015 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Pickrahn, Katie Lynn |
|---|---|
| Associated with | Stanford University, Department of Chemical Engineering. |
| Primary advisor | Bent, Stacey |
| Thesis advisor | Bent, Stacey |
| Thesis advisor | Jaramillo, Thomas Francisco |
| Thesis advisor | Nørskov, Jens K |
| Advisor | Jaramillo, Thomas Francisco |
| Advisor | Nørskov, Jens K |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Katie Lynn Pickrahn. |
|---|---|
| Note | Submitted to the Department of Chemical Engineering. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2015. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2015 by Katie Lynn Pickrahn
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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