التفاصيل البيبلوغرافية
| العنوان: |
Tailoring iridium-palladium nanoparticles with Ir-rich skin: a highly durable anode electrocatalyst for acidic water electrolysis via a facile microwave-assisted chemical reduction method. |
| المؤلفون: |
Karade SS; Department of Green Technology, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark. rash@igt.sdu.dk., Sharma R; Department of Green Technology, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark. rash@igt.sdu.dk., Morgen P; Department of Green Technology, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark. rash@igt.sdu.dk., Makovec D; Department for Materials Synthesis, Jozef Stefan Institute, Jamova 39, Ljubljana SI-1000, Slovenia., Gyergyek S; Department for Materials Synthesis, Jozef Stefan Institute, Jamova 39, Ljubljana SI-1000, Slovenia., Andersen SM; Department of Green Technology, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark. rash@igt.sdu.dk. |
| المصدر: |
Physical chemistry chemical physics : PCCP [Phys Chem Chem Phys] 2024 Mar 13; Vol. 26 (11), pp. 9060-9072. Date of Electronic Publication: 2024 Mar 13. |
| نوع المنشور: |
Journal Article |
| اللغة: |
English |
| بيانات الدورية: |
Publisher: Royal Society of Chemistry Country of Publication: England NLM ID: 100888160 Publication Model: Electronic Cited Medium: Internet ISSN: 1463-9084 (Electronic) Linking ISSN: 14639076 NLM ISO Abbreviation: Phys Chem Chem Phys Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: |
Original Publication: Cambridge [England] : Royal Society of Chemistry, c1999- |
| مستخلص: |
Electrochemical water splitting under acidic conditions is a clean way towards producing hydrogen fuels. The slow kinetics of the oxygen evolution reaction (OER) at the anode is currently a bottleneck for commercial acceptance of this technology. Therefore, arriving at more efficient and sustainable OER electrocatalysts is highly desirable. We here demonstrate the synthesis of iridium-palladium (IrPd) alloy nanoparticles (2-5 nm) with variable average composition (Ir : Pd = 1 : 0, 1 : 1, 1 : 3, 1 : 6, 1 : 9 and 0 : 1) using a facile one-pot microwave-assisted chemical reduction method. The IrPd nanoparticles show structure- and composition-dependent OER performance in acidic media. Utilizing different reduction strengths and precursor ratios, successful alloy catalysts were prepared with Ir-rich skin and sublayers of different Pd compositions. Their structures were revealed using high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, and hydrogen underpotential deposition (H upd ) studies. It turned out that (1) the alloy OER catalyst also has a high electrochemically active surface area for hydrogen adsorption/desorption, (2) the OER performance is strongly dependent on the surface Ir contribution and (3) the intact Ir skin is essential for electrocatalyst stability. |
| تواريخ الأحداث: |
Date Created: 20240305 Latest Revision: 20240313 |
| رمز التحديث: |
20240313 |
| DOI: |
10.1039/d3cp04284g |
| PMID: |
38441809 |
| قاعدة البيانات: |
MEDLINE |
