Superhydrophilic V‐Doped CoP Nanoparticles@Cu3P Nanotubes with Vacancy and Interface Engineering for Synergistically Enhanced Electrocatalytic Overall Water Splitting DOI

Yongkai Sun,

Jingjie Dai,

He Lv

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 29, 2025

Abstract Synergistically optimizing electronic structure and exposing abundant active sites to significantly improve performance of transition metal‐based electrocatalysts is an urgent necessity remains a significant challenge. Herein, hybrid nanotubes array rich P‐vacancy V‐CoP@Cu 3 P in situ grown on copper foam (V ‐V‐CoP@Cu HNTAs/CF) fabricated for overall water splitting. The combined experimental theoretical calculations reveal that V doping‐induced vacancies lead the formation local electric field within V‐CoP heterojunction‐induced built‐in field, which can jointly accelerate electron transfer charge separation, thereby enhancing reaction kinetics. Moreover, nanotube not only increase electrochemical surface area offer superior mass transfer, but also possess superhydrophilic nature utilization efficiency electrode surfaces. Due these advantages, HNTAs/CF provide distinguished HER OER activity, by employing as bifunctional electrocatalysts, splitting device delivered current density 10 mA cm −2 at low voltage 1.46 maintained its activity without decay 200 h 1 m KOH electrolyte.

Язык: Английский

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

Xiuling Xu,

Fumin Wang, Liwen Wang

и другие.

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Апрель 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.

Язык: Английский

Процитировано

0
Tailoring Bifunctional Pt/Ni-Nc Catalysts for Coupled Biomass Glucose Electrooxidation to Value-Added Products with Hydrogen Evolution Reaction DOI
Yancai Li,

D. Liao,

Huiyan Fang

и другие.

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0
Superhydrophilic V‐Doped CoP Nanoparticles@Cu3P Nanotubes with Vacancy and Interface Engineering for Synergistically Enhanced Electrocatalytic Overall Water Splitting DOI

Yongkai Sun,

Jingjie Dai,

He Lv

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 29, 2025

Abstract Synergistically optimizing electronic structure and exposing abundant active sites to significantly improve performance of transition metal‐based electrocatalysts is an urgent necessity remains a significant challenge. Herein, hybrid nanotubes array rich P‐vacancy V‐CoP@Cu 3 P in situ grown on copper foam (V ‐V‐CoP@Cu HNTAs/CF) fabricated for overall water splitting. The combined experimental theoretical calculations reveal that V doping‐induced vacancies lead the formation local electric field within V‐CoP heterojunction‐induced built‐in field, which can jointly accelerate electron transfer charge separation, thereby enhancing reaction kinetics. Moreover, nanotube not only increase electrochemical surface area offer superior mass transfer, but also possess superhydrophilic nature utilization efficiency electrode surfaces. Due these advantages, HNTAs/CF provide distinguished HER OER activity, by employing as bifunctional electrocatalysts, splitting device delivered current density 10 mA cm −2 at low voltage 1.46 maintained its activity without decay 200 h 1 m KOH electrolyte.

Язык: Английский

Процитировано

0