Functionalized 3D Mo2N Current Collectors Drive Multi‐Phase Ni‐based Synergy and Mitigate Surface Reconstruction for Enhanced Oxygen Evolution Catalysis DOI

Meilian Tu,

Zhixiao Zhu,

Hao Yang

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

Abstract Electrochemical water splitting is a promising approach for sustainable hydrogen production, but the oxygen evolution reaction (OER) remains bottleneck due to sluggish kinetics, poor activity, and limited stability scalability. Here, Mo 2 N‐functionalized nickel designed foam (NF@Mo N) subsequently transform into N/NiSe/Ni P multi‐phase heterostructure through selenization phosphorization, address these challenges. The optimized NF@Mo catalyst integrates three key strategies: (I) functionalizing NF with N enhance conductivity charge transfer, (II) engineering collaborative multi‐interface optimize active sites (III) precisely controlling phase formation phosphorization mitigate surface reconstruction ensure long‐term stability. not only achieves an overpotential of 242 mV@10 mA cm −2 remarkable over 350 h, also low 395 mV at high current density 800 , outperforming pristine other control samples. Theoretical analysis reveals that N‐stabilized NiSe/Ni on enhances optimizes adsorption energies OER intermediates, leading improved catalytic performance This work provides new strategy designing high‐performance, non‐precious metal catalysts industrial applications advancing production.

Language: Английский

Functionalized 3D Mo2N Current Collectors Drive Multi‐Phase Ni‐based Synergy and Mitigate Surface Reconstruction for Enhanced Oxygen Evolution Catalysis DOI

Meilian Tu,

Zhixiao Zhu,

Hao Yang

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

Abstract Electrochemical water splitting is a promising approach for sustainable hydrogen production, but the oxygen evolution reaction (OER) remains bottleneck due to sluggish kinetics, poor activity, and limited stability scalability. Here, Mo 2 N‐functionalized nickel designed foam (NF@Mo N) subsequently transform into N/NiSe/Ni P multi‐phase heterostructure through selenization phosphorization, address these challenges. The optimized NF@Mo catalyst integrates three key strategies: (I) functionalizing NF with N enhance conductivity charge transfer, (II) engineering collaborative multi‐interface optimize active sites (III) precisely controlling phase formation phosphorization mitigate surface reconstruction ensure long‐term stability. not only achieves an overpotential of 242 mV@10 mA cm −2 remarkable over 350 h, also low 395 mV at high current density 800 , outperforming pristine other control samples. Theoretical analysis reveals that N‐stabilized NiSe/Ni on enhances optimizes adsorption energies OER intermediates, leading improved catalytic performance This work provides new strategy designing high‐performance, non‐precious metal catalysts industrial applications advancing production.

Language: Английский

Citations

0