Tailoring the Electronic Structure of Ir Alloy Electrocatalysts through Lanthanide (La, Ce, Pr, and Nd) for Acidic Oxygen Evolution Enhancement
The oxygen evolution reaction (OER) is critical for renewable energy conversion and storage devices. However, the rational design of electrocatalysts with suitably high efficiency and stability in strongly acidic electrolytes remains a major challenge. Herein, a solid‐phase synthesis strategy is dev...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-09-01
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| Series: | Advanced Energy & Sustainability Research |
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| Online Access: | https://doi.org/10.1002/aesr.202300023 |
| _version_ | 1797690187522768896 |
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| author | Shuai Zhang Mingzi Sun Leilei Yin Siyuan Wang Bolong Huang Yaping Du Chun-Hua Yan |
| author_facet | Shuai Zhang Mingzi Sun Leilei Yin Siyuan Wang Bolong Huang Yaping Du Chun-Hua Yan |
| author_sort | Shuai Zhang |
| collection | DOAJ |
| description | The oxygen evolution reaction (OER) is critical for renewable energy conversion and storage devices. However, the rational design of electrocatalysts with suitably high efficiency and stability in strongly acidic electrolytes remains a major challenge. Herein, a solid‐phase synthesis strategy is developed for the preparation of Ir‐Ln (Ln = La, Ce, Pr, Nd) alloy nanoparticles with uniform particle size on carbon supports as superior acidic OER catalysts. Tailoring by the rare earth (RE) elements, Ir2Pr achieves a maximum mass activity of 2.10 A mg−1Ir at 300 mV overpotential and stability over 200 h at 10 mA cm−2 in 0.5 m H2SO4, which is 9.5 and 20 times higher to pure Ir nanoparticles. Furthermore, Ir2Pr alloy nanoparticles exhibit excellent durability in strongly acidic electrolytes. Theoretical calculations have confirmed that the OER performances are strongly related to the RE elements in the alloy, where the d‐band centers show a consistent trend with the overpotential. Moreover, the highest electroactivity of Ir2Pr is attributed to the improved electron transfer by 4f orbitals and the suitable binding strength of intermediates. Herein, a fundamental understanding of the lanthanide–electrochemical performance relationship is provided and will also inspire the rational design of efficient nanoscale RE alloy electrocatalysts. |
| first_indexed | 2024-03-12T01:56:59Z |
| format | Article |
| id | doaj.art-3385ca85a6624b10a3c7f4fd3cecc539 |
| institution | Directory Open Access Journal |
| issn | 2699-9412 |
| language | English |
| last_indexed | 2024-03-12T01:56:59Z |
| publishDate | 2023-09-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Energy & Sustainability Research |
| spelling | doaj.art-3385ca85a6624b10a3c7f4fd3cecc5392023-09-08T03:36:49ZengWiley-VCHAdvanced Energy & Sustainability Research2699-94122023-09-0149n/an/a10.1002/aesr.202300023Tailoring the Electronic Structure of Ir Alloy Electrocatalysts through Lanthanide (La, Ce, Pr, and Nd) for Acidic Oxygen Evolution EnhancementShuai Zhang0Mingzi Sun1Leilei Yin2Siyuan Wang3Bolong Huang4Yaping Du5Chun-Hua Yan6Tianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional Materials School of Materials Science and Engineering National Institute for Advanced Materials Nankai University Tianjin 300350 ChinaDepartment of Applied Biology and Chemical Technology The Hong Kong Polytechnic University Hung Hom Kowloon 999077 Hong Kong SAR ChinaTianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional Materials School of Materials Science and Engineering National Institute for Advanced Materials Nankai University Tianjin 300350 ChinaTianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional Materials School of Materials Science and Engineering National Institute for Advanced Materials Nankai University Tianjin 300350 ChinaDepartment of Applied Biology and Chemical Technology The Hong Kong Polytechnic University Hung Hom Kowloon 999077 Hong Kong SAR ChinaTianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional Materials School of Materials Science and Engineering National Institute for Advanced Materials Nankai University Tianjin 300350 ChinaTianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional Materials School of Materials Science and Engineering National Institute for Advanced Materials Nankai University Tianjin 300350 ChinaThe oxygen evolution reaction (OER) is critical for renewable energy conversion and storage devices. However, the rational design of electrocatalysts with suitably high efficiency and stability in strongly acidic electrolytes remains a major challenge. Herein, a solid‐phase synthesis strategy is developed for the preparation of Ir‐Ln (Ln = La, Ce, Pr, Nd) alloy nanoparticles with uniform particle size on carbon supports as superior acidic OER catalysts. Tailoring by the rare earth (RE) elements, Ir2Pr achieves a maximum mass activity of 2.10 A mg−1Ir at 300 mV overpotential and stability over 200 h at 10 mA cm−2 in 0.5 m H2SO4, which is 9.5 and 20 times higher to pure Ir nanoparticles. Furthermore, Ir2Pr alloy nanoparticles exhibit excellent durability in strongly acidic electrolytes. Theoretical calculations have confirmed that the OER performances are strongly related to the RE elements in the alloy, where the d‐band centers show a consistent trend with the overpotential. Moreover, the highest electroactivity of Ir2Pr is attributed to the improved electron transfer by 4f orbitals and the suitable binding strength of intermediates. Herein, a fundamental understanding of the lanthanide–electrochemical performance relationship is provided and will also inspire the rational design of efficient nanoscale RE alloy electrocatalysts.https://doi.org/10.1002/aesr.202300023acidic oxygen evolutionelectronic structure tailoringhigh mass activityir-based electrocatalystsrare earth alloys |
| spellingShingle | Shuai Zhang Mingzi Sun Leilei Yin Siyuan Wang Bolong Huang Yaping Du Chun-Hua Yan Tailoring the Electronic Structure of Ir Alloy Electrocatalysts through Lanthanide (La, Ce, Pr, and Nd) for Acidic Oxygen Evolution Enhancement Advanced Energy & Sustainability Research acidic oxygen evolution electronic structure tailoring high mass activity ir-based electrocatalysts rare earth alloys |
| title | Tailoring the Electronic Structure of Ir Alloy Electrocatalysts through Lanthanide (La, Ce, Pr, and Nd) for Acidic Oxygen Evolution Enhancement |
| title_full | Tailoring the Electronic Structure of Ir Alloy Electrocatalysts through Lanthanide (La, Ce, Pr, and Nd) for Acidic Oxygen Evolution Enhancement |
| title_fullStr | Tailoring the Electronic Structure of Ir Alloy Electrocatalysts through Lanthanide (La, Ce, Pr, and Nd) for Acidic Oxygen Evolution Enhancement |
| title_full_unstemmed | Tailoring the Electronic Structure of Ir Alloy Electrocatalysts through Lanthanide (La, Ce, Pr, and Nd) for Acidic Oxygen Evolution Enhancement |
| title_short | Tailoring the Electronic Structure of Ir Alloy Electrocatalysts through Lanthanide (La, Ce, Pr, and Nd) for Acidic Oxygen Evolution Enhancement |
| title_sort | tailoring the electronic structure of ir alloy electrocatalysts through lanthanide la ce pr and nd for acidic oxygen evolution enhancement |
| topic | acidic oxygen evolution electronic structure tailoring high mass activity ir-based electrocatalysts rare earth alloys |
| url | https://doi.org/10.1002/aesr.202300023 |
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