Rational Design of Ultrahigh‐Loading Ir Single Atoms on Reconstructed Mn─NiOOH for Enhanced Catalytic Performance in Urea‐Water Electrolysis DOI
Quynh Phuong Ngo, Sampath Prabhakaran, Do Hwan Kim

et al.

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

Published: Oct. 28, 2024

Abstract Investigating advanced electrocatalysts is crucial for improving the efficacy of water splitting to generate environmentally friendly fuel. The discovery highly effective electrocatalysts, capable driving oxygen evolution reaction (OER) and urea oxidation (UOR) in urea‐alkaline environments, pivotal advancing large‐scale hydrogen production. This study aims introduce a new method that involves creating nanosheets high‐loading iridium single atoms embedded manganese‐containing nickel oxyhydroxide matrix (Ir@Mn─NiOOH). These nanostructures are derived from self‐supported hydrate pre‐catalyst grown on foam then activated through electrochemical etching pretreatment. Ir@Mn─NiOOH nanoarchitecture displays outstanding electrocatalytic activity, having low overpotential just 258 mV potential 1.319 V (at 10 mA cm −2 ) OER UOR, respectively. Such extraordinary catalytic characteristics mainly owing strong synthetic electronic interaction between Ir Mn─NiOOH, which can change its boost sites. research presents way produce exceptionally efficient catalysts by adding synergistic effect complex multi‐electron processes.

Language: Английский

High-entropy alloys as advanced electrocatalysts for biomass conversion and sustainable hydrogen production DOI
Srinivaas Masimukku,

Yen‐Yi Lee,

Bo-Wun Huang

et al.

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

2
Tailored Design of Mesoporous Nanospheres with High Entropic Alloy Sites for Efficient Redox Electrocatalysis DOI Creative Commons
Ravi Nandan, Hiroki Nara, Ho Ngoc Nam

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: July 19, 2024

High Entropy Alloys (HEAs) are a versatile material with unique properties, tailored for various applications. They enable pH-sensitive electrocatalytic transformations like hydrogen evolution reaction (HER) and oxidation reactions (HOR) in alkaline media. Mesoporous nanostructures high surface area preferred these electrochemical reactions, but designing mesoporous HEA sis challenging. To overcome this challenge, low-temperature triblock copolymer-assisted wet-chemical approach is developed to produce nanospheres composed of PtPdRuMoNi systems sufficient entropic mixing. Owing active sites inherent effect, features, increased accessibility, optimized promote strong HER/HOR performance medium. At 30 mV nominal overpotential, it exhibits mass activity ≈167 151 A g

Language: Английский

Citations

11
Functionalization Strategies of MXene Architectures for Electrochemical Energy Storage Applications DOI Creative Commons
Shude Liu, Huilin Zhang, Jieming Chen

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(5), P. 1223 - 1223

Published: March 2, 2025

MXene, an emerging class of two-dimensional materials, has garnered significant attention in electrochemical energy storage applications due to its high specific surface area, tunable functional groups, excellent electrical conductivity, and mechanical stability. However, their practical application devices remains challenged by issues such as the stacking layered structure, degradation, limited ion diffusion properties. Functionalization emerged a key strategy enhance performance MXene materials. By modulating doping with various elements, integrating other researchers have significantly improved chemical stability, transport properties, strength MXenes. This review provides comprehensive overview categorizing them highlighting advantages applications. It also examines recent advancements preparation optimized synthesis strategies. In-depth discussions are presented on functionalization MXenes devices, including supercapacitors, lithium-ion batteries, sodium-ion batteries. Finally, concludes summary explores future research directions, aiming guide further developments field.

Language: Английский

Citations

1
Ternary PdIrNi Telluride Amorphous Mesoporous Nanocatalyst for Efficient Electro-Oxidation of Ethylene Glycol DOI Open Access
Liang Fu, Manli Wang,

Lulu Hao

et al.

Catalysts, Journal Year: 2025, Volume and Issue: 15(2), P. 143 - 143

Published: Feb. 4, 2025

The development of efficient electrocatalysts for the complete oxidation ethylene glycol (EG) is crucial enhancing practicality direct EG fuel cells (DEGFCs). However, significant challenges persist in developing highly active Pd-based catalytic electrodes. In this work, PdIrNi ternary telluride nanospheres (PdIrNiTe-MNSPs) with mesoporous morphology and an amorphous structure were successfully synthesized applied electrocatalytic reaction. Brunauer–Emmett–Teller analysis revealed typical characteristics, a surface area 8.33 m2·g−1 total pore volume 0.055 cm3·g−1, respectively. Transmission electron microscopy characterization showed that outer layer PdIrNiTe-MNSPs entirely structure. Electrochemical tests demonstrated exhibit enhanced specific activity (16.75 mA·cm−2) mass (1372.22 mA·mg−1) reaction (EGOR), achieving 3.17 2.09 times higher than commercial Pd/C, which can be attributed to its unique nanoarchitecture optimized configuration. situ spectroscopy incorporation IrNi, facilitate C-C bond cleavage EG, selectivity (≈93%) oxidizing C1 products, while PdTe-MNSPs glycolic acid EGOR. Taken together, work provides new insights into application nanomaterials electrocatalysis

Language: Английский

Citations

0
Tailored High-Entropy Alloy Nanomaterials for Electrocatalytic Applications DOI
Chaohui Wang, Yunhao Wang, Yuecheng Xiong

et al.

EnergyChem, Journal Year: 2025, Volume and Issue: unknown, P. 100155 - 100155

Published: March 1, 2025

Language: Английский

Citations

0
Regulating electronic density and interfacial electric field of high-entropy metallenes to enhance oxygen reduction reaction activity DOI

Wenning Liu,

Li An, Pengfei Li

et al.

Chem Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 101357 - 101357

Published: April 1, 2025

Language: Английский

Citations

0
Active Learning‐Driven Discovery of Sub‐2 Nm High‐Entropy Nanocatalysts for Alkaline Water Splitting DOI Creative Commons
P. Sakthivel,

Dong Han,

T. Marimuthu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 16, 2025

Abstract High‐entropy nanoparticles (HENPs) present a vast opportunity for the development of advanced electrocatalysts. The optimization their chemical compositions, including careful selection and combination elements, is critical to tailoring HENPs specific catalytic processes. To reduce extensive experimental effort involved in composition optimization, active learning techniques can be utilized predict suggest materials with enhanced electrocatalytic activity. In this study, sub‐2 nm high‐entropy catalysts incorporating eight transition metal elements are developed through an workflow aimed at identifying optimal compositions. Using initial data, approach successfully guided discovery new octonary HENP catalyst state‐of‐the‐art performance hydrogen evolution reaction (HER). Catalyst improved within prediction uncertainty machine model. For oxygen (OER), however, model demonstrated limited predictive accuracy, leading assessment workflow's boundaries. These findings underscore how integration curated data accelerate electrocatalyst discovery, while also highlighting areas further refinement.

Language: Английский

Citations

0
Built-in electric field-driven electron transfer behavior at Ru-RuP2 heterointerface fosters efficient and CO‐resilient alkaline hydrogen oxidation DOI
Yi Liu,

Lianrui Cheng,

Shuqing Zhou

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: unknown, P. 124709 - 124709

Published: Oct. 1, 2024

Language: Английский

Citations

2
A ZnFeNiCoCr high-entropy alloy for efficient bifunctional oxygen electrocatalysis DOI
Juan Li, Bing Li, Ping Li

et al.

Rare Metals, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 18, 2024

Language: Английский

Citations

0
Ternary MoWNi Alloy as a Bifunctional Catalyst for Alkaline Hydrogen Oxidation and Evolution Reactions DOI Open Access
Yongxin Zhao,

Chaofan Tian,

Yuzhu Zhai

et al.

Catalysts, Journal Year: 2024, Volume and Issue: 15(1), P. 15 - 15

Published: Dec. 27, 2024

The hydrogen economy, as an emerging paradigm for sustainable energy, relies on efficient oxidation (HOR) and evolution reactions (HER). These require effective catalysts to enhance reaction kinetics reduce costs. Platinum (Pt) is widely used but faces issues such high cost CO poisoning. Non-precious metal catalysts, particularly Ni-based alloys, are being explored viable alternatives. This study introduces a ternary MoWNi alloy catalyst synthesized via microwave-assisted methods annealing. achieves current density of 3.5 mA·cm−2 at overpotential 100 mV in HOR requires only 25 reach 10 HER, making it comparable commercial 20% Pt/C catalysts. Notably, the also exhibits superior stability resistance toxicity. findings underscore potential advancing hydrogen-based energy systems.

Language: Английский

Citations

0