Atomically Dispersed Copper–Platinum Dual Sites Alloyed with Palladium Nanorings Catalyze the Hydrogen Evolution Reaction

Tingting Chao, Xuan Luo, Wenxing Chen, Bin Jiang*, Jingjie Ge, Yue Lin, Geng Wu, Xiaoqian Wang, Yanmin Hu, Zhongbin Zhuang, Yuen Wu, Xun Hong, Yadong Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

249 Citations (Scopus)

Abstract

Designing highly active catalysts at an atomic scale is required to drive the hydrogen evolution reaction (HER). Copper–platinum (Cu-Pt) dual sites were alloyed with palladium nanorings (Pd NRs) containing 1.5 atom % Pt, using atomically dispersed Cu on ultrathin Pd NRs as seeds. The ultrafine structure of atomically dispersed Cu-Pt dual sites was confirmed with X-ray absorption fine structure (XAFS) measurements. The Pd/Cu-Pt NRs exhibit excellent HER properties in acidic solution with an overpotential of only 22.8 mV at a current density of 10 mA cm−2 and a high mass current density of 3002 A g−1(Pd+Pt) at a −0.05 V potential.

Original languageEnglish
Pages (from-to)16047-16051
Number of pages5
JournalAngewandte Chemie - International Edition
Volume56
Issue number50
DOIs
Publication statusPublished - 11 Dec 2017
Externally publishedYes

Keywords

  • alloys
  • atomically dispersed
  • dual sites
  • electrocatalysis
  • single atoms

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