Underlying Substrate Effect on Electrochemical Activity for Hydrogen Evolution Reaction with Low‐Platinum‐Loaded Catalysts
Platinum is known as the best catalyst for the hydrogen evolution reaction (HER) but the scarcity and high cost of Pt limit its widespread applicability. Herein, the role of the underlying substrate on the HER activity of dispersed Pt atoms is uncovered. A direct current magnetron sputtering techniq...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2024-02-01
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| Series: | Small Structures |
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| Online Access: | https://doi.org/10.1002/sstr.202300265 |
| _version_ | 1827356001759657984 |
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| author | Baleeswaraiah Muchharla Peter V. Sushko Kishor K. Sadasivuni Wei Cao Akash Tomar Hani Elsayed–Ali Adetayo Adedeji Abdennaceur Karoui Joshua M. Spurgeon Bijandra Kumar |
| author_facet | Baleeswaraiah Muchharla Peter V. Sushko Kishor K. Sadasivuni Wei Cao Akash Tomar Hani Elsayed–Ali Adetayo Adedeji Abdennaceur Karoui Joshua M. Spurgeon Bijandra Kumar |
| author_sort | Baleeswaraiah Muchharla |
| collection | DOAJ |
| description | Platinum is known as the best catalyst for the hydrogen evolution reaction (HER) but the scarcity and high cost of Pt limit its widespread applicability. Herein, the role of the underlying substrate on the HER activity of dispersed Pt atoms is uncovered. A direct current magnetron sputtering technique is utilized to deposit transition metal (TM) thin films of W, Ti, and Ta as underlying substrates for extremely low loading of Pt (<1.5 at%). The electrocatalytic performance of as‐synthesized samples for the HER is examined in both alkali and acidic media. The results show that despite the low loading of Pt, the Pt/TM catalysts produce hydrogen at a rate comparable to that of pristine bulk Pt. Pt/TM catalysts also display good stability with less than 5% decay in performance after 10 h of continuous HER operation. Based on the computational study, the excellent performance is attributed to the modified electronic properties of the Pt atoms, offering ideal binding energy for HER due to interaction with the underlying substrates. This work provides a robust and industry‐friendly route toward designing efficient catalytic systems for important electrochemical reactions such as HER and others. |
| first_indexed | 2024-03-08T04:51:29Z |
| format | Article |
| id | doaj.art-430b37357f674943b0e10eab275c5678 |
| institution | Directory Open Access Journal |
| issn | 2688-4062 |
| language | English |
| last_indexed | 2024-03-08T04:51:29Z |
| publishDate | 2024-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Small Structures |
| spelling | doaj.art-430b37357f674943b0e10eab275c56782024-02-08T03:06:33ZengWiley-VCHSmall Structures2688-40622024-02-0152n/an/a10.1002/sstr.202300265Underlying Substrate Effect on Electrochemical Activity for Hydrogen Evolution Reaction with Low‐Platinum‐Loaded CatalystsBaleeswaraiah Muchharla0Peter V. Sushko1Kishor K. Sadasivuni2Wei Cao3Akash Tomar4Hani Elsayed–Ali5Adetayo Adedeji6Abdennaceur Karoui7Joshua M. Spurgeon8Bijandra Kumar9Department of Mathematics Computer Science and Engineering Technology Elizabeth City State University Elizabeth NC 27909 USAPhysical Sciences Division Physical & Computational Sciences Directorate Pacific Northwest National Laboratory Richland WA 99352 USACenter for Advanced Materials Qatar University Doha 2713 QatarDepartment of Electrical and Computer Engineering Old Dominion University Norfolk VA 23529 USADepartment of Electrical and Computer Engineering Boise State University Boise ID 83725 USADepartment of Electrical and Computer Engineering Old Dominion University Norfolk VA 23529 USADepartment of Natural Sciences Elizabeth City State University Elizabeth NC 27909 USACenter for Research Excellence in Science and Technology (CREST), Department of Mathematics and Physics North Carolina Central University Durham NC 27707 USAConn Center for Renewable Energy Research University of Louisville Louisville KY 40292 USADepartment of Mathematics Computer Science and Engineering Technology Elizabeth City State University Elizabeth NC 27909 USAPlatinum is known as the best catalyst for the hydrogen evolution reaction (HER) but the scarcity and high cost of Pt limit its widespread applicability. Herein, the role of the underlying substrate on the HER activity of dispersed Pt atoms is uncovered. A direct current magnetron sputtering technique is utilized to deposit transition metal (TM) thin films of W, Ti, and Ta as underlying substrates for extremely low loading of Pt (<1.5 at%). The electrocatalytic performance of as‐synthesized samples for the HER is examined in both alkali and acidic media. The results show that despite the low loading of Pt, the Pt/TM catalysts produce hydrogen at a rate comparable to that of pristine bulk Pt. Pt/TM catalysts also display good stability with less than 5% decay in performance after 10 h of continuous HER operation. Based on the computational study, the excellent performance is attributed to the modified electronic properties of the Pt atoms, offering ideal binding energy for HER due to interaction with the underlying substrates. This work provides a robust and industry‐friendly route toward designing efficient catalytic systems for important electrochemical reactions such as HER and others.https://doi.org/10.1002/sstr.202300265hydrogen evolution reactionsnanocatalystssubstrate effectsTafel slopes |
| spellingShingle | Baleeswaraiah Muchharla Peter V. Sushko Kishor K. Sadasivuni Wei Cao Akash Tomar Hani Elsayed–Ali Adetayo Adedeji Abdennaceur Karoui Joshua M. Spurgeon Bijandra Kumar Underlying Substrate Effect on Electrochemical Activity for Hydrogen Evolution Reaction with Low‐Platinum‐Loaded Catalysts Small Structures hydrogen evolution reactions nanocatalysts substrate effects Tafel slopes |
| title | Underlying Substrate Effect on Electrochemical Activity for Hydrogen Evolution Reaction with Low‐Platinum‐Loaded Catalysts |
| title_full | Underlying Substrate Effect on Electrochemical Activity for Hydrogen Evolution Reaction with Low‐Platinum‐Loaded Catalysts |
| title_fullStr | Underlying Substrate Effect on Electrochemical Activity for Hydrogen Evolution Reaction with Low‐Platinum‐Loaded Catalysts |
| title_full_unstemmed | Underlying Substrate Effect on Electrochemical Activity for Hydrogen Evolution Reaction with Low‐Platinum‐Loaded Catalysts |
| title_short | Underlying Substrate Effect on Electrochemical Activity for Hydrogen Evolution Reaction with Low‐Platinum‐Loaded Catalysts |
| title_sort | underlying substrate effect on electrochemical activity for hydrogen evolution reaction with low platinum loaded catalysts |
| topic | hydrogen evolution reactions nanocatalysts substrate effects Tafel slopes |
| url | https://doi.org/10.1002/sstr.202300265 |
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