دورية أكاديمية
Tailoring the Electronic Structure of Ir Alloy Electrocatalysts through Lanthanide (La, Ce, Pr, and Nd) for Acidic Oxygen Evolution Enhancement
| العنوان: | Tailoring the Electronic Structure of Ir Alloy Electrocatalysts through Lanthanide (La, Ce, Pr, and Nd) for Acidic Oxygen Evolution Enhancement |
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| المؤلفون: | Shuai Zhang, Mingzi Sun, Leilei Yin, Siyuan Wang, Bolong Huang, Yaping Du, Chun-Hua Yan |
| المصدر: | Advanced Energy & Sustainability Research, Vol 4, Iss 9, Pp n/a-n/a (2023) |
| بيانات النشر: | Wiley-VCH, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Environmental technology. Sanitary engineering LCC:Renewable energy sources |
| مصطلحات موضوعية: | acidic oxygen evolution, electronic structure tailoring, high mass activity, ir-based electrocatalysts, rare earth alloys, Environmental technology. Sanitary engineering, TD1-1066, Renewable energy sources, TJ807-830 |
| الوصف: | 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. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2699-9412 |
| Relation: | https://doaj.org/toc/2699-9412 |
| DOI: | 10.1002/aesr.202300023 |
| URL الوصول: | https://doaj.org/article/3385ca85a6624b10a3c7f4fd3cecc539 |
| رقم الأكسشن: | edsdoj.3385ca85a6624b10a3c7f4fd3cecc539 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 26999412 |
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| DOI: | 10.1002/aesr.202300023 |