Core–Shell IrPt Nanoalloy on La/Ni–Co3O4 for High-Performance Bifunctional PEM Electrolysis with Ultralow Noble Metal Loading

Core–Shell IrPt Nanoalloy on La/Ni–Co3O4 for High-Performance Bifunctional PEM Electrolysis with Ultralow Noble Metal Loading

Highlights Core–shell IrPt nanoalloy on La/Ni–Co₃O₄ achieves unprecedented bifunctional activity (2 A cm−2 at 1.72 V) in proton exchange membrane water electrolysis (PEMWE) with ultralow loadings (0.075 mg cm−2 Ir/Pt at both electrodes). 646-h durability in PEMWE cell (5 μV h−1 decay) via IrPt-core@...

Full description

Saved in:
Bibliographic Details
Main Authors: Yifei Liu, Xinmeng Er, Xinyao Wang, Hangxing Ren, Wenchao Wang, Feng Cao, Taiyan Zhang, Pan Liu, Yakun Yuan, Fangbo Yu, Yang Ren, Fuqiang Huang, Wenjiang Ding, Lina Chong
Format: Article
Language:English
Published: SpringerOpen 2025-07-01
Series:Nano-Micro Letters
Subjects:
Proton exchange membrane water electrolysis
Bifunctional catalyst
Oxygen evolution reaction
Hydrogen evolution reaction
Core–shell catalyst
Online Access:https://doi.org/10.1007/s40820-025-01845-7
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Highlights Core–shell IrPt nanoalloy on La/Ni–Co₃O₄ achieves unprecedented bifunctional activity (2 A cm−2 at 1.72 V) in proton exchange membrane water electrolysis (PEMWE) with ultralow loadings (0.075 mg cm−2 Ir/Pt at both electrodes). 646-h durability in PEMWE cell (5 μV h−1 decay) via IrPt-core@IrPtOx-shell synergy, hierarchical pores, and oxygen vacancies for robust electron/mass transfer and active-site stability. In situ X-ray absorption spectroscopy combined with density functional theory unveils Ir–O–Pt sites enabling bi-nuclear oxygen evolution reaction and Volmer–Tafel hydrogen evolution reaction mechanisms through optimized Ir/Pt charge redistribution, breaking kinetic limitations.
ISSN:2311-6706
2150-5551

Similar Items