材料科学
接口(物质)
电催化剂
氢
化学工程
纳米技术
电化学
物理化学
电极
复合材料
有机化学
化学
毛细管数
毛细管作用
工程类
作者
Shen‐Wei Yu,Soonho Kwon,Yizhen Chen,Zhenhua Xie,Xiner Lu,Kui He,Sooyeon Hwang,Jingguang G. Chen,William A. Goddard,Sen Zhang
标识
DOI:10.1002/adfm.202402966
摘要
Abstract The creation of metal‐metal oxide interfaces is an important approach to fine‐tuning catalyst properties through strong interfacial interactions. This article presents the work on developing interfaces between Pt and CeO x that improve Pt surface energetics for the hydrogen evolution reaction (HER) within an alkaline electrolyte. The Pt‐CeO x interfaces are formed by depositing size‐controlled Pt nanoparticles onto a carbon support already coated with ultrathin CeO x nanosheets. This interface structure facilitates substantial electron transfer from Pt to CeO x , resulting in decreased hydrogen binding energies on Pt surfaces, and water dissociation for the HER, as predicted by the density functional theory (DFT) calculations. Electrochemical testing indicates that both Pt specific activity and mass activity are improved by a factor of 2 to 3 following the formation of Pt‐CeO x interfaces. This study underscores the significance and potential of harnessing robust interfacial effects to enhance electrocatalytic reactions.
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