Textured RuIrAgMnO2 Oxides With Preferentially Orientated (110) Facet by Concerted Shaping of Ag and Mn for Stable Acid Water Oxidation DOI
Ming Zhang,

Yanhui Sun,

Feng Liu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 29, 2024

Abstract Entropy‐based polymetallic oxides with configurational entropy, structure flexibility, and crystallographic orientation have been regarded as promising catalysts for oxygen evolution reaction (OER), due to their electronic energy band occupation, composition ligand stabilization, “cocktail” effect. Herein, a rutile RuIrAgMnO 2 oxide an along the (110) facets is first fabricated by low‐temperature directional co‐pyrolysis strategy of metal salts on Ti foil at 300 °C. The quaternary exhibits texture coefficient 1.13 facet, resulting from concerted shaping Ag Mn components presenting vibrational entropy R (R gas content). In 0.5 m H SO 4 , it displays overpotential 171 mV 10 mA cm −2 OER, running voltage 340 h 100 . remarkably improved performance can be associated presence preferred in‐plane strains, which activate stabilize OER process via reconstruction. More interestingly, preferential prevents diffusion or dissolution active ions caused entropy‐dependent barriers, ensuring long‐term stability. This work pave way entropy‐driven optimal structures, disrupting trade‐off between activity stability in water oxidation.

Language: Английский

Stabilizing bulk lattice oxygen via the enhancement of Ir/Ru–O bonds for stable oxidation catalysts in acidic media DOI
Han Wang, Yubin Chen, Ten‐Chin Wen

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125219 - 125219

Published: March 1, 2025

Language: Английский

Citations

2
Recent Research on Iridium‐Based Electrocatalysts for Acidic Oxygen Evolution Reaction from the Origin of Reaction Mechanism DOI
Ligang Chen,

Wei Zhao,

Juntao Zhang

et al.

Small, Journal Year: 2024, Volume and Issue: 20(43)

Published: June 28, 2024

As the anode reaction of proton exchange membrane water electrolysis (PEMWE), acidic oxygen evolution (OER) is one main obstacles to practical application PEMWE due its sluggish four-electron transfer process. The development high-performance OER electrocatalysts has become key improving kinetics. To date, although various excellent have been widely researched, Ir-based nanomaterials are still state-of-the-art electrocatalysts. Hence, a comprehensive and in-depth understanding mechanism crucial for precise optimization catalytic performance. In this review, origin nature conventional adsorbate (AEM) derived volcanic relationship on processes summarized some strategies based AEM introduced. further investigate strategy electrocatalysts, several unconventional mechanisms including dual-site lattice mediated mechanism, their applications introduced in detail. Thereafter, active species at classified into surface Ir O species. Finally, future direction prospect put forward.

Language: Английский

Citations

5
Lanthanum-based nanomaterials for oxygen evolution reaction DOI
Miao He, Ping Wang,

Jiasai Yao

et al.

Journal of Rare Earths, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

Language: Английский

Citations

4
Stabilizing Bulk Lattice Oxygen Via the Enhancement of Ir/Ru–O Bonds for Stable Oxidation Catalysts in Acidic Media DOI
Han Wang,

xiaohua chen,

Yubin Chen

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0
Overcoming Interfacial Hydrogen Site-Blocking during Alkaline Formate Oxidation: Insights from Lattice-Compressed PdZr/C Catalysts DOI

Lanlan Shi,

Feike Zhang,

Xiaojun Wang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

Improving the electrocatalytic conversion of formate in alkaline solutions is crucial for commercial application fuel cells. However, palladium-based catalysts used oxidation reactions (FOR) face challenges due to strong adsorption hydrogen intermediates, resulting lower catalytic efficiency environments. Herein, we prepared a PdZr/C catalyst aimed at employing doping-induced strain strategy reduce binding energy palladium and release more active sites formate. Through density functional theory calculations experimental investigations, find that lattice compression induced by Zr doping regulates electronic structure Pd. Specifically, incorporation dopant shifts d-band center Pd downward, weakening sites. This adjustment promotes desorption thus accelerating FOR kinetics alleviating site-blocking effect. As result, exhibited 2.4-fold increase activity compared conventional Pd/C catalyst. It also achieved peak potential delivered significantly higher current 1917 mA mg–1. These findings highlight critical role tuning properties offer valuable insights into design high-performance electrocatalysts technologies.

Language: Английский

Citations

0
Nest‐Scheme RuIrLa Nanocrystals by NP‐to‐NP Oriented Assembly: Coherent Strain Fields‐Driven Band Structure Splitting for Efficient Acidic Water Oxidation DOI

Rongchao Li,

Jingjun Liu,

Guanwang Yin

et al.

Small, Journal Year: 2024, Volume and Issue: 20(43)

Published: June 26, 2024

Atomic substructure engineering provides new opportunities for the designing newly and efficient catalysts with diverse atom ensembles, trimmed electron bands, way-out coordination environments, creating unique contributing to concertedly catalyze water oxidation, which is of great significance proton exchange membrane electrolysis (PEMWE). Herein, nest-scheme RuIrLa nanocrystals dense coherent interfaces as built-in substructures are firstly fabricated by using commercial ZnO particles acid-removable templates, through a La-stabilized epitaxial growth nanoparticles (NPs). The obtained nests exhibit low overpotential 198 mV at 10 mA cm

Language: Английский

Citations

3
Recent Progress in Balancing the Activity, Durability, and Low Ir Content for Ir‐Based Oxygen Evolution Reaction Electrocatalysts in Acidic Media DOI Open Access
Huimin Wang, Xinyi Li, Guozhu Zhang

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Proton exchange membrane (PEM) electrolysis faces challenges associated with high overpotential and acidic environments, which pose significant hurdles in developing highly active durable electrocatalysts for the oxygen evolution reaction (OER). Ir-based nanomaterials are considered promising OER catalysts PEM due to their favorable intrinsic activity stability under conditions. However, cost limited availability limitations. Consequently, numerous studies have emerged aimed at reducing iridium content while maintaining durability. Furthermore, research on mechanism of has garnered widespread attention differing views among researchers. The recent progress balancing activity, durability, low is summarized this review, a particular focus effects catalyst morphology, heteroatom doping, substrate introduction, novel structure development performance from four perspectives. Additionally, mechanistic discussed, both theoretical experimental approaches elucidate mechanism. Finally, perspectives future developments presented.

Language: Английский

Citations

3
Textured RuIrAgMnO2 Oxides With Preferentially Orientated (110) Facet by Concerted Shaping of Ag and Mn for Stable Acid Water Oxidation DOI
Ming Zhang,

Yanhui Sun,

Feng Liu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 29, 2024

Abstract Entropy‐based polymetallic oxides with configurational entropy, structure flexibility, and crystallographic orientation have been regarded as promising catalysts for oxygen evolution reaction (OER), due to their electronic energy band occupation, composition ligand stabilization, “cocktail” effect. Herein, a rutile RuIrAgMnO 2 oxide an along the (110) facets is first fabricated by low‐temperature directional co‐pyrolysis strategy of metal salts on Ti foil at 300 °C. The quaternary exhibits texture coefficient 1.13 facet, resulting from concerted shaping Ag Mn components presenting vibrational entropy R (R gas content). In 0.5 m H SO 4 , it displays overpotential 171 mV 10 mA cm −2 OER, running voltage 340 h 100 . remarkably improved performance can be associated presence preferred in‐plane strains, which activate stabilize OER process via reconstruction. More interestingly, preferential prevents diffusion or dissolution active ions caused entropy‐dependent barriers, ensuring long‐term stability. This work pave way entropy‐driven optimal structures, disrupting trade‐off between activity stability in water oxidation.

Language: Английский

Citations

0