Active and highly durable supported catalysts for proton exchange membrane electrolysers
The design and development of supported catalysts for the oxygen evolution reaction (OER) is a promising pathway to reducing iridium loading in proton exchange membrane water electrolysers. However, supported catalysts often suffer from poor activity and durability, particularly when deployed in mem...
| Main Authors: | , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/179873 |
| _version_ | 1826126680121409536 |
|---|---|
| author | Belami, Debora Lindley, Matthew Jonnalagadda, Umesh Sai Bullock, Annie Mae Goncalves Fan, Qianwenhao Liu, Wen Haigh, Sarah J. Kwan, James Regmi, Yagya N. King, Laurie A. |
| author2 | School of Chemistry, Chemical Engineering and Biotechnology |
| author_facet | School of Chemistry, Chemical Engineering and Biotechnology Belami, Debora Lindley, Matthew Jonnalagadda, Umesh Sai Bullock, Annie Mae Goncalves Fan, Qianwenhao Liu, Wen Haigh, Sarah J. Kwan, James Regmi, Yagya N. King, Laurie A. |
| author_sort | Belami, Debora |
| collection | NTU |
| description | The design and development of supported catalysts for the oxygen evolution reaction (OER) is a promising pathway to reducing iridium loading in proton exchange membrane water electrolysers. However, supported catalysts often suffer from poor activity and durability, particularly when deployed in membrane electrode assemblies. In this work, we deploy iridium coated hollow titanium dioxide particles as OER catalysts to achieve higher Ir mass activities than the leading commercial catalysts. Critically, we demonstrate state-of-the-art durabilities for supported iridium catalysts when compared against the previously reported values for analogous device architectures, operating conditions and accelerated stress test profiles. Through extensive materials characterisations alongside rotating disk electrode measurements, we investigate the role of conductivity, morphology, oxidation state and crystallinity on the OER electrochemical performance. Our work highlights a new supported catalyst design that unlocks high-performance OER activity and durability in commercially relevant testing configurations. |
| first_indexed | 2024-10-01T06:56:39Z |
| format | Journal Article |
| id | ntu-10356/179873 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:56:39Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1798732024-08-30T15:31:49Z Active and highly durable supported catalysts for proton exchange membrane electrolysers Belami, Debora Lindley, Matthew Jonnalagadda, Umesh Sai Bullock, Annie Mae Goncalves Fan, Qianwenhao Liu, Wen Haigh, Sarah J. Kwan, James Regmi, Yagya N. King, Laurie A. School of Chemistry, Chemical Engineering and Biotechnology Engineering Supported catalysts Oxygen evolution reaction The design and development of supported catalysts for the oxygen evolution reaction (OER) is a promising pathway to reducing iridium loading in proton exchange membrane water electrolysers. However, supported catalysts often suffer from poor activity and durability, particularly when deployed in membrane electrode assemblies. In this work, we deploy iridium coated hollow titanium dioxide particles as OER catalysts to achieve higher Ir mass activities than the leading commercial catalysts. Critically, we demonstrate state-of-the-art durabilities for supported iridium catalysts when compared against the previously reported values for analogous device architectures, operating conditions and accelerated stress test profiles. Through extensive materials characterisations alongside rotating disk electrode measurements, we investigate the role of conductivity, morphology, oxidation state and crystallinity on the OER electrochemical performance. Our work highlights a new supported catalyst design that unlocks high-performance OER activity and durability in commercially relevant testing configurations. Published version LK and YR are grateful for support from the UK Catalysis Hub funded by EPSRC grant reference EP/R026645/1. LK also acknowledges support from EPSRC (grant EP/X009734/1). SJH acknowledges support from EPSRC (grants EP/W03395X/1, EP/ V056565/1 and EP/S021531/1) and from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant ERC-2016-STGEvoluTEM-715502). We acknowledge the support of the Henry Royce Institute for DB through the Royce PhD Equipment Access Scheme. TEM access at the University of Manchester was supported by the Henry Royce Institute for Advanced Materials, funded through EPSRC grants EP/R00661X/1, EP/ S019367/1, EP/P025021/1 and EP/P025498/1 (equipment access). We also thank Mott Corporation USA for providing the titanium porous transport layers. 2024-08-28T06:48:26Z 2024-08-28T06:48:26Z 2024 Journal Article Belami, D., Lindley, M., Jonnalagadda, U. S., Bullock, A. M. G., Fan, Q., Liu, W., Haigh, S. J., Kwan, J., Regmi, Y. N. & King, L. A. (2024). Active and highly durable supported catalysts for proton exchange membrane electrolysers. EES Catalysis. https://dx.doi.org/10.1039/d4ey00026a 2753-801X https://hdl.handle.net/10356/179873 10.1039/d4ey00026a 2-s2.0-85196769567 en EES Catalysis © 2024 The Author(s). Published by the Royal Society of Chemistry. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. application/pdf |
| spellingShingle | Engineering Supported catalysts Oxygen evolution reaction Belami, Debora Lindley, Matthew Jonnalagadda, Umesh Sai Bullock, Annie Mae Goncalves Fan, Qianwenhao Liu, Wen Haigh, Sarah J. Kwan, James Regmi, Yagya N. King, Laurie A. Active and highly durable supported catalysts for proton exchange membrane electrolysers |
| title | Active and highly durable supported catalysts for proton exchange membrane electrolysers |
| title_full | Active and highly durable supported catalysts for proton exchange membrane electrolysers |
| title_fullStr | Active and highly durable supported catalysts for proton exchange membrane electrolysers |
| title_full_unstemmed | Active and highly durable supported catalysts for proton exchange membrane electrolysers |
| title_short | Active and highly durable supported catalysts for proton exchange membrane electrolysers |
| title_sort | active and highly durable supported catalysts for proton exchange membrane electrolysers |
| topic | Engineering Supported catalysts Oxygen evolution reaction |
| url | https://hdl.handle.net/10356/179873 |
| work_keys_str_mv | AT belamidebora activeandhighlydurablesupportedcatalystsforprotonexchangemembraneelectrolysers AT lindleymatthew activeandhighlydurablesupportedcatalystsforprotonexchangemembraneelectrolysers AT jonnalagaddaumeshsai activeandhighlydurablesupportedcatalystsforprotonexchangemembraneelectrolysers AT bullockanniemaegoncalves activeandhighlydurablesupportedcatalystsforprotonexchangemembraneelectrolysers AT fanqianwenhao activeandhighlydurablesupportedcatalystsforprotonexchangemembraneelectrolysers AT liuwen activeandhighlydurablesupportedcatalystsforprotonexchangemembraneelectrolysers AT haighsarahj activeandhighlydurablesupportedcatalystsforprotonexchangemembraneelectrolysers AT kwanjames activeandhighlydurablesupportedcatalystsforprotonexchangemembraneelectrolysers AT regmiyagyan activeandhighlydurablesupportedcatalystsforprotonexchangemembraneelectrolysers AT kinglauriea activeandhighlydurablesupportedcatalystsforprotonexchangemembraneelectrolysers |