High-entropy oxide-supported platinum nanoparticles for efficient hydrogen evolution reaction  

作　　者：Ming-Yu Fan Jia-Jun Wang Jun Zhao Hong Zhang Tian-Yi Ma Xiao-Peng Han Wen-Bin Hu 

机构地区：[1]School of Materials Science and Engineering,Tianjin Key Laboratory of Composite and Functional Materials Key Laboratory of Advanced Ceramics and Machining Technology,Tianjin University,Tianjin,300350,China [2]Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Fuzhou,350207,China [3]School of Science,RMIT University,Melbourne,VIC,3000,Australia

出　　处：《Rare Metals》2024年第4期1537-1546,共10页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.52122107,51972224 and 52001227)。

摘　　要：High-entropy oxides(HEOs)are a new class of single-phase structures with unique electronic and catalytic properties;therefore,it is worthwhile to explore their applications in electrocatalysis.In this study,a Pt/(FeCoNiCrAl)_(3)O_(4)nanohybrid using HEO as a support was developed as an efficient catalyst for the hydrogen evolution reaction(HER).Pt/(FeCoNiCrAl)_(3)O_(4)exhibited high HER activity with a low overpotential of 22 mV at10 mA·cm^(-2),outperforming other binary,ternary,and quaternary supports.The HER activity of Pt/(FeCoNiCrAl)_(3)O_(4)was higher than that of a commercial Pt/C with a significantly lower Pt loading.The catalyst exhibited good activity and long-term stability(60 h)in an electrolytic water-splitting device.This good activity can be attributed to the fact that the introduction of Pt effectively facilitates electronic interactions between Pt and the HEO.In addition,the HEO substrate was more favorable for dispersing Pt particles,optimizing the electrochemical specific surface area,and significantly reducing the charge resistance of the HER.This study extends the application of HEOs in electrocatalysis and demonstrates the promising prospects of HEOs as supports for electrocatalysts.

关 键 词：High-entropy oxides Hydrogen evolution reaction NANOHYBRID Water electrolysis 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TQ116.2[化学工程—无机化工] O643.36[理学—物理化学]