Research Progress of Non‐Noble Metal‐Based Self‐Supporting Electrode for Hydrogen Evolution Reaction at High Current Density

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

Abstract Electrocatalytic water splitting has emerged as a key method for large‐scale production of green hydrogen. Constructing efficient, durable, and low‐cost electrocatalysts the hydrogen evolution reaction at high current densities is prerequisite practical industrial applications splitting. Recently, non‐noble metal‐based self‐supporting electrodes have been explored density due to their cost‐effective, conductivity metal substrate, robust interfacial binding between catalyst strong mechanical stability. In this review, recently reported (Ni, Fe, Cu, Co, Ti, Mo, alloy) electrode applied are comprehensively summarized, classified, discussed. Five fundamental design principles such intrinsic activity, abundant active sites, fast electron transfer, mass transport, stability proposed discussed achieve high‐performance under densities. Furthermore, various modification strategies including heteroatom doping, morphology engineering, interface phase strain engineering enhance catalytic activity durability electrode. Finally, challenges prospects designing efficient stable in future This comprehensive overview will provide valuable insight guidance development production.

Язык: Английский

Doping Mo Triggers Charge Distribution Optimization and P Vacancy of Ni₂P@Ni₁₂P₅ Heterojunction for Industrial Electrocatalytic Production of Adipic Acid and H₂

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Synchronous electrosynthesis of value-added adipic acid (AA) and H2 is extremely crucial for carbon neutrality. However, accomplishing the preparation AA at large current density with high selectivity still challenging. Herein, a robust Mo-doped Ni2P@Ni12P5 heterojunction more P vacancies on Ni foam proposed simultaneous electrooxidation cyclohexanol (CHAOR) to hydrogen evolution reaction (HER) density. Combined X-ray photoelectron spectroscopy, absorption fine structure, electron spin resonance confirm that Mo incorporation induces charge redistribution Ni2P@Ni12P5, where adjusts electrons from P, triggers vacancies. Further experimental theoretical investigations reveal d-band center upshifted, optimizing adsorption energies water electron-rich site boosting HER activity. Besides, Ni3+ generated electron-deficient induced by Mo, alongside OH* triggered concurrently promote CHA dehydrogenation C─C bond cleavage, decreasing energy barrier CHAOR. Consequently, two-electrode flow electrolyzer achieves industrial (>230 mA cm-2) 85.7% yield, 100% Faradaic efficiency production. This study showcases an bifunctional electrocatalyst production productivity.

Язык: Английский