Статья

Carbon‐Quantum‐Dots‐Loaded Ruthenium Nanoparticles as an Efficient Electrocatalyst for Hydrogen Production in Alkaline Media

Weidong LiCollege of Chemistry and Molecular Engineering Zhengzhou University Zhengzhou 450000 ChinaYuan LiuCollege of Materials Science and Engineering Zhengzhou University Zhengzhou 450000 ChinaMin WuCollege of Materials Science and Engineering Zhejiang University of Technology Hangzhou 310014 ChinaXiaolei FengDepartment of Earth Sciences University of Cambridge Downing Street CB2 3EQ Cambridge UKSimon A. T. RedfernDepartment of Earth Sciences University of Cambridge Downing Street CB2 3EQ Cambridge UKYuan ShangSupercomputer Center in Smart City Institute Zhengzhou University Zhengzhou 450000 ChinaXue YongDepartment of Physics and Engineering Physics University of Saskatchewan Saskatoon S7N5E2 CanadaTanglue FengState Key Lab of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun 130012 ChinaKaifeng WuState Key Laboratory of Molecular Reaction Dynamics and Collaborative Innovation Center of Chemistry for Energy Materials Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 ChinaZhongyi LiuCollege of Chemistry and Molecular Engineering Zhengzhou University Zhengzhou 450000 ChinaBaojun LiCollege of Chemistry and Molecular Engineering Zhengzhou University Zhengzhou 450000 ChinaZhimin ChenCollege of Materials Science and Engineering Zhengzhou University Zhengzhou 450000 ChinaJohn S. TseDepartment of Physics and Engineering Physics University of Saskatchewan Saskatoon S7N5E2 CanadaSiyu LuCollege of Chemistry and Molecular Engineering Zhengzhou University Zhengzhou 450000 ChinaBai YangState Key Lab of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun 130012 China

2018en

ABI

Аннотация

Abstract Highly active, stable, and cheap Pt‐free catalysts for the hydrogen evolution reaction (HER) are facing increasing demand as a result of their potential use in future energy‐conversion systems. However, the development of HER electrocatalysts with Pt‐like or even superior activity, in particular ones that can function under alkaline conditions, remains a significant challenge. Here, the synthesis of a novel carbon‐loaded ruthenium nanoparticle electrocatalyst (Ru@CQDs) for the HER, using carbon quantum dots (CQDs), is reported. Electrochemical tests reveal that, even under extremely alkaline conditions (1 m KOH), the as‐formed Ru@CQDs exhibits excellent catalytic behavior with an onset overpotential of 0 mV, a Tafel slope of 47 mV decade −1 , and good durability. Most importantly, it only requires an overpotential of 10 mV to achieve the current density of 10 mA cm −2 . Such catalytic characteristics are superior to the current commercial Pt/C and most noble metals, non‐noble metals, and nonmetallic catalysts under basic conditions. These findings open a new field for the application of CQDs and add to the growing family of metal@CQDs with high HER performance.

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Идентификаторы

DOI: 10.1002/adma.201800676

Цитирования и источники

Цитирований: 4Использованных источников: 0

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