Hydrogen spillover in superwetting Ni/NiMoN Mott-Schottky heterostructures for boosting ampere-level hydrogen evolution

Applied Physics Letters, Journal Year: 2025, Volume and Issue: 126(11)

Published: March 1, 2025

Realizing fast electron transfer and rapid mass transport in high current density hydrogen evolution reaction (HER) is pivotal imperative for water electrolysis. Here, we developed Ni/NiMoN Mott-Schottky heterostructures with unique superwettability that can enhance both transfer, greatly reducing the energy demand splitting. Experimental functional theory demonstrate situ grown Ni nanoparticles optimize dissociation of molecules from surface adsorption H*, facilitating spillover process on Ni/NiMoN. The optimized electrode delivers outstanding HER performance an ultralow overpotential −231.3 mV at −1000 mA cm−2 maintains stable operation 1000 h alkaline media. An anion-exchange membrane electrolyzer using as cathode achieve a low voltage 1.93 V superstability. Our work paves efficient way constructing active robust catalysts toward industrial-level production.

Language: Английский

---

Constructing hollow nanoarrays heterostructure of phosphorus doped NiMoO4 and Fe2O3 with interfacial coupling for stable overall water splitting

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162132 - 162132

Published: March 1, 2025

Language: Английский

---

Bioenzyme Inspired Heterointerface Construction of NiFeSe/Ni₃S₂ for Improved Overall Water Splitting

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

Electrocatalytic water splitting for hydrogen production represents a crucial pathway toward establishing sustainable energy infrastructure and addressing environmental concerns, with the development of high-performance nonprecious metal catalysts being central focus. While Ni3S2 demonstrates potential as an electrocatalyst, its limited functionality suboptimal performance necessitate further enhancement. In this study, drawing inspiration from natural hydrogenases, we engineered novel NiFeSe/Ni3S2 composite electrocatalyst through integration NiFeSe Ni3S2. The synthesized catalyst displayed outstanding overall water-splitting in alkaline media, realizing current densities 100 10 mA cm-2 at remarkably low overpotentials 267.4 mV (vs RHE) oxygen evolution reaction (OER) 105.6 (HER), respectively. Remarkably, two-electrode electrolyzer incorporating achieved density 20 substantially reduced cell voltage 1.586 V. Comprehensive analysis revealed that strategic construction biomimetic active centers heterogeneous interfaces significantly modulates electronic structure, improved charge transfer, redistribution electron catalytic sites. This investigation provides valuable insights promising framework rational design bifunctional electrocatalysts applications.

Language: Английский

---

Trace Pt Induced electron-enriched Ru to boost interfacial water-activation for alkaline hydrogen generation under industrial condition

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162421 - 162421

Published: April 1, 2025

Language: Английский

---

Activating and stabilizing lattice oxygen by synergetic defect engineering and surface reconstruction into CeOx/CoP for electrocatalytic oxygen evolution

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 163282 - 163282

Published: April 1, 2025

Language: Английский

---

Self-Supported Hybrid Chiral MoS₂@NiCo₂O₄ Heterostructure on a Carbon Cloth for Efficient Oxygen Evolution

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

Published: April 22, 2025

Language: Английский

---

Hydrogen spillover in CoNi/CoNiMo3O8 Mott-Schottky heterostructure facilitates ampere-level hydrogen generation

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 111125 - 111125

Published: May 1, 2025

Language: Английский

---

A Corrosion‐Resistant Amorphous/Crystalline Heterostructured Catalyst for Industrial‐Level Seawater Electrolysis in Membrane Electrode Assembly Electrolyzer

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

Published: May 15, 2025

Abstract The oxygen evolution reaction (OER) is integral to the production of green hydrogen via seawater electrolysis. However, it faces significant challenges, including suboptimal catalytic activity, pronounced corrosion induced by Cl − ions, and restricted operational lifetimes. In this study, a heterostructured hybrid catalyst composed an amorphous NiFe‐layered double hydroxide (LDH) crystalline NiMoO₄ presented. Leveraging synergistic coupling interactions, NiFe‐LDH/NiMoO₄ demonstrates remarkable OER performance in electrolysis, requiring minimal overpotential merely 339 mV attain industrial‐level current density 500 mA cm 2 . Experimental findings reveal that constructed architecture significantly enhances electron transfer between Ni Fe sites, resulting formation high‐valent species are beneficial for catalysis. A mechanistic analysis elucidates phenomenon whereby integration NiFe‐LDH mitigates ions optimizes adsorption vital oxygen‐containing intermediates, accelerating kinetics alkaline improving during electrolysis process.

Language: Английский

---

Practical Monolithic W, Mo Dual-Doped NiFeB Catalyst for Overall Water Splitting

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

Published: May 22, 2025

Language: Английский

---

Precatalysts: A Missing Link in Efficient Oxygen Evolution Electrocatalysis

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Language: Английский

---