Boosting the Performance Gain of Ru/C for Hydrogen Evolution Reaction Via Surface Engineering

被引：17

作者：

Bao, Xiaobing ^{[1
]}

Chen, Yuzhuo ^{[2
]}

Mao, Shanjun ^{[2
]}

Wang, Yong ^{[2
]}

Yang, Yong ^{[1
]}

Gong, Yutong ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

[2] Zhejiang Univ, Inst Catalysis, Dept Chem, Adv Mat & Catalysis Grp, Hangzhou 310028, Peoples R China

来源：

ENERGY & ENVIRONMENTAL MATERIALS | 2023年 / 6卷 / 05期

基金：

中国国家自然科学基金; 国家重点研发计划; 中国博士后科学基金;

关键词：

high performance; hydrogen evolution reaction; ruthenium catalyst; surface engineering; TOTAL-ENERGY CALCULATIONS; OXYGEN EVOLUTION; EFFICIENT; CATALYST; CARBON; PH; ELECTROCATALYSTS; METALS;

D O I：

10.1002/eem2.12418

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The surface properties of catalysts determine the intrinsic activity and adaptability. Ruthenium is regarded as a potential candidate to substitute platinum for water electrolysis due to the low cost and analogous electronic structures while it suffers from severe dissolution and stability problems. Herein, the modification of Ru/C with atomically dispersed cobalt atoms is achieved via a simple thermal doping method. The newly formed amorphous shell with Ru-Co sites on the Ru/C catalyst improved the hydrogen evolution reaction activity and stability significantly. Impressively, the obtained Co1Ru@Ru/CNx catalyst exhibited an overpotential as low as 30 mV at 10 mA cm(-2) in an alkaline medium, which is among the best HER catalysts reported so far. The oxygen oxophile Co prevents the fast oxidation and dissolution of Ru species, ensuring outstanding long-term durability up to 70 h. Theoretical calculations reveal that the Ru-Co coordination acts as a more active site for water dissociation than the Ru-Ru. Meanwhile, the "Ru-Co shell/Ru core" structures show high adaptability for the reaction conditions. This simple doping strategy offers prospects for scalable preparation of highly active electrocatalysts.

引用

页数：10

共 52 条

[1] Thermodynamic explanation of the universal correlation between oxygen evolution activity and corrosion of oxide catalysts [J].