Highly Dispersed Quasi-1 nm Ruthenium Nanoclusters on Hierarchical Nitrogen-Doped Carbon Nanocages Constructed by Surface-Constrained Sintering for Alkaline Hydrogen Evolution

被引：0

作者：

He, Zhengyao ^{[1
]}

Chen, Yiqun ^{[1
]}

Tian, Jingyi ^{[1
]}

Cheng, Xueyi ^{[1
]}

Xia, Minqi ^{[1
]}

Zhou, Cao ^{[1
]}

Zhang, Yan ^{[1
]}

Wang, Xizhang ^{[1
]}

Yang, Lijun ^{[1
]}

Wu, Qiang ^{[1
]}

Hu, Zheng ^{[1
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem MOE, Jiangsu Prov Lab Nanotechnol, Nanjing 210023, Peoples R China

来源：

ACS APPLIED NANO MATERIALS | 2024年 / 7卷 / 10期

基金：

中国国家自然科学基金;

关键词：

alkaline hydrogen evolution; ruthenium nanoclusters; hierarchical nitrogen-dopedcarbon nanocages; surface-constrainedsintering; size regulation; SINGLE-ATOM CATALYSTS; RU NANOPARTICLES; EFFICIENT; PH; ELECTROCATALYSTS;

D O I：

10.1021/acsanm.4c01438

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A cost-efficient catalyst for electrochemical water splitting is crucial to green hydrogen production. Ru has a much lower cost and only slightly stronger adsorption to the hydrogen intermediate (*H) than Pt, demonstrating great potential for catalyzing the hydrogen evolution reaction (HER). Herein, Ru nanoclusters of quasi-1 nm size are highly dispersed on hierarchical N-doped carbon nanocages (hNCNC) by surface-constrained sintering, showing strong metal-support interaction due to the anchoring effect of abundant N dopants. The optimized electrocatalyst exhibits impressive HER performance in 1 M KOH, with a low overpotential of 21 mV at 10 mA cm-2 and superior electrocatalytic stability, which is attributed to the quasi-1 nm Ru nanoclusters with large electrochemical active surface area and optimized *H desorption behavior. This study provides an efficient and inexpensive alkaline HER electrocatalyst and also suggests a convenient strategy to develop highly dispersed noble-metal-based electrocatalysts by surface-constrained sintering.

引用

页码：11882 / 11889

页数：8

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