Strong-weak dual interface engineered electrocatalyst for large current density hydrogen evolution reaction

被引：0

作者：

Ke, Shaorou ^{[1
]}

Mi, Ruiyu ^{[1
]}

Min, Xin ^{[1
,2
]}

Zhu, Xinyu ^{[1
]}

Wu, Congyi ^{[3
]}

Li, Xin ^{[1
]}

Yang, Bozhi ^{[1
]}

Wu, Xiaowen ^{[1
]}

Liu, Yangai ^{[1
]}

Huang, Zhaohui ^{[1
]}

Fang, Minghao ^{[1
]}

机构：

[1] China Univ Geosci Beijing, Engn Res Ctr Minist Educ Geol Carbon Storage & Low, Sch Mat Sci & Technol,Natl Lab Mineral Mat, Beijing Key Lab Mat Utilizat Nonmet Minerals & Sol, Beijing, Peoples R China

[2] Southwest Univ Sci & Technol, Tianfu Inst Res & Innovat, Chengdu, Sichuan, Peoples R China

[3] China Univ Geosci Beijing, Sch Sci, Beijing, Peoples R China

来源：

COMMUNICATIONS MATERIALS | 2025年 / 6卷 / 01期

基金：

中国国家自然科学基金;

关键词：

NANOCATALYSTS; ULTRALOW;

D O I：

10.1038/s43246-025-00735-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Supported nanocatalysts are crucial for hydrogen production, yet their activity and stability are challenging to manage due to complex metal-support interfaces. Herein, we design Pt@ anatase&rutile-TiO2 with a strong-weak dual interface by modifying TiO2 using high-energy ball milling and in-situ reduction to vary surface energies. Experiments and density functional theory calculations reveal that the strong Pt-anatase TiO2 interface enhances hydrogen adsorption. In contrast, the weak Pt-rutile TiO2 interface facilitates hydrogen desorption, simultaneously preventing Pt agglomeration and increasing reaction rate. As a result, the tailored catalyst has a 529.3 mV overpotential at 1000 mA cm-2 in 0.5 M H2SO4, 0.69 times less than commercial Pt/C. It also possesses 8.8 times the mass activity of commercial Pt/C and maintains a low overpotential after 2000 cyclic voltammetry cycles, suggesting high activity and stability. This strong-weak dual interface engineering strategy shows potential for overall water splitting and proton exchange membrane water electrolyzer, advancing the design of efficient supported nanocatalysts.

引用

页数：12