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Atomically Dispersed Copper–Platinum Dual Sites Alloyed with Palladium Nanorings Catalyze the Hydrogen Evolution Reaction
Author(s) -
Chao Tingting,
Luo Xuan,
Chen Wenxing,
Jiang Bin,
Ge Jingjie,
Lin Yue,
Wu Geng,
Wang Xiaoqian,
Hu Yanmin,
Zhuang Zhongbin,
Wu Yuen,
Hong Xun,
Li Yadong
Publication year - 2017
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201709803
Subject(s) - overpotential , palladium , platinum , copper , catalysis , x ray absorption fine structure , materials science , hydrogen , extended x ray absorption fine structure , inorganic chemistry , chemistry , metallurgy , electrochemistry , absorption spectroscopy , electrode , organic chemistry , physics , quantum mechanics , spectroscopy
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.