Strain engineering of high-entropy alloy catalysts for electrocatalytic water splitting
Summary: Developing active and cost-effective bifunctional electrocatalysts for overall water splitting is challenging but mandatory for renewable energy technologies. We report a high-entropy alloy (HEA) of PtIrCuNiCr as a bifunctional electrocatalyst for overall water splitting, which shows a low...
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-04-01
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| Series: | iScience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004223004030 |
| _version_ | 1797869694547394560 |
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| author | Bing Wang Weigui Liu Yecheng Leng Xiwen Yu Cheng Wang Lianghe Hu Xi Zhu Congping Wu Yingfang Yao Zhigang Zou |
| author_facet | Bing Wang Weigui Liu Yecheng Leng Xiwen Yu Cheng Wang Lianghe Hu Xi Zhu Congping Wu Yingfang Yao Zhigang Zou |
| author_sort | Bing Wang |
| collection | DOAJ |
| description | Summary: Developing active and cost-effective bifunctional electrocatalysts for overall water splitting is challenging but mandatory for renewable energy technologies. We report a high-entropy alloy (HEA) of PtIrCuNiCr as a bifunctional electrocatalyst for overall water splitting, which shows a low overpotential of ca. 190 mV at the current density of 10 mA cm−2. Compared with pure metals, HEAs exhibit remarkable surface strain due to severe lattice distortion in their crystal structures. Theoretical calculations reveal that the strain can regulate the binding energy of intermediates on catalysts by adjusting the metal-metal bonding energy. It pushes the HEA toward the top of volcano plots to achieve superior electrocatalytic activity for both hydrogen and oxygen evolution reactions. The strain effect of HEAs on electrocatalysis can be well engineered by tuning the catalyst radius or configurational entropy. This work renders a systematic strain regulation strategy for designing a high-performance HEA catalyst for overall water splitting. |
| first_indexed | 2024-04-10T00:16:37Z |
| format | Article |
| id | doaj.art-793a9c4c86264f7daad588e5bd948409 |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-04-10T00:16:37Z |
| publishDate | 2023-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-793a9c4c86264f7daad588e5bd9484092023-03-16T05:06:01ZengElsevieriScience2589-00422023-04-01264106326Strain engineering of high-entropy alloy catalysts for electrocatalytic water splittingBing Wang0Weigui Liu1Yecheng Leng2Xiwen Yu3Cheng Wang4Lianghe Hu5Xi Zhu6Congping Wu7Yingfang Yao8Zhigang Zou9National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory for Nano Technology, Eco-materials and Renewable Energy Research Center (ERERC), School of Physics, Nanjing University, Nanjing 210093, P. R. China; Institute for Carbon Neutrality, Ningbo Innovation Center, Zhejiang University, Ningbo 315100, P. R. China; Corresponding authorNational Laboratory of Solid State Microstructures, Jiangsu Key Laboratory for Nano Technology, Eco-materials and Renewable Energy Research Center (ERERC), School of Physics, Nanjing University, Nanjing 210093, P. R. ChinaSchool of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, P. R. ChinaCollege of Engineering and Applied Sciences, Nanjing University; No. 22 Hankou Road, Nanjing 210093, P. R. ChinaCollege of Engineering and Applied Sciences, Nanjing University; No. 22 Hankou Road, Nanjing 210093, P. R. ChinaNational Laboratory of Solid State Microstructures, Jiangsu Key Laboratory for Nano Technology, Eco-materials and Renewable Energy Research Center (ERERC), School of Physics, Nanjing University, Nanjing 210093, P. R. ChinaSchool of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, P. R. China; Corresponding authorNational Laboratory of Solid State Microstructures, Jiangsu Key Laboratory for Nano Technology, Eco-materials and Renewable Energy Research Center (ERERC), School of Physics, Nanjing University, Nanjing 210093, P. R. ChinaNational Laboratory of Solid State Microstructures, Jiangsu Key Laboratory for Nano Technology, Eco-materials and Renewable Energy Research Center (ERERC), School of Physics, Nanjing University, Nanjing 210093, P. R. China; College of Engineering and Applied Sciences, Nanjing University; No. 22 Hankou Road, Nanjing 210093, P. R. China; School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, P. R. China; Corresponding authorNational Laboratory of Solid State Microstructures, Jiangsu Key Laboratory for Nano Technology, Eco-materials and Renewable Energy Research Center (ERERC), School of Physics, Nanjing University, Nanjing 210093, P. R. China; School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, P. R. China; Macau Institute of Systems Engineering, Macau University of Science and Technology, Macau 999078, P. R. China; Institute for Carbon Neutrality, Ningbo Innovation Center, Zhejiang University, Ningbo 315100, P. R. ChinaSummary: Developing active and cost-effective bifunctional electrocatalysts for overall water splitting is challenging but mandatory for renewable energy technologies. We report a high-entropy alloy (HEA) of PtIrCuNiCr as a bifunctional electrocatalyst for overall water splitting, which shows a low overpotential of ca. 190 mV at the current density of 10 mA cm−2. Compared with pure metals, HEAs exhibit remarkable surface strain due to severe lattice distortion in their crystal structures. Theoretical calculations reveal that the strain can regulate the binding energy of intermediates on catalysts by adjusting the metal-metal bonding energy. It pushes the HEA toward the top of volcano plots to achieve superior electrocatalytic activity for both hydrogen and oxygen evolution reactions. The strain effect of HEAs on electrocatalysis can be well engineered by tuning the catalyst radius or configurational entropy. This work renders a systematic strain regulation strategy for designing a high-performance HEA catalyst for overall water splitting.http://www.sciencedirect.com/science/article/pii/S2589004223004030CatalysisElectrochemistryMaterials scienceMaterials chemistryMaterials synthesis |
| spellingShingle | Bing Wang Weigui Liu Yecheng Leng Xiwen Yu Cheng Wang Lianghe Hu Xi Zhu Congping Wu Yingfang Yao Zhigang Zou Strain engineering of high-entropy alloy catalysts for electrocatalytic water splitting iScience Catalysis Electrochemistry Materials science Materials chemistry Materials synthesis |
| title | Strain engineering of high-entropy alloy catalysts for electrocatalytic water splitting |
| title_full | Strain engineering of high-entropy alloy catalysts for electrocatalytic water splitting |
| title_fullStr | Strain engineering of high-entropy alloy catalysts for electrocatalytic water splitting |
| title_full_unstemmed | Strain engineering of high-entropy alloy catalysts for electrocatalytic water splitting |
| title_short | Strain engineering of high-entropy alloy catalysts for electrocatalytic water splitting |
| title_sort | strain engineering of high entropy alloy catalysts for electrocatalytic water splitting |
| topic | Catalysis Electrochemistry Materials science Materials chemistry Materials synthesis |
| url | http://www.sciencedirect.com/science/article/pii/S2589004223004030 |
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