Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 50, Pages 16047-16051Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201709803
Keywords
alloys; atomically dispersed; dual sites; electrocatalysis; single atoms
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Funding
- National Natural Science Foundation of China [21571169, 21521091, 21390393, U1463202]
- Fundamental Research Funds for the Central Universities [WK2060190081]
- China Ministry of Science and Technology [2016YFA (0202801)]
- CAST [2016QNRC001]
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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 (PdNRs) containing 1.5atom% Pt, using atomically dispersed Cu on ultrathin PdNRs 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-PtNRs exhibit excellent HER properties in acidic solution with an overpotential of only 22.8mV at a current density of 10mAcm(-2) and a high mass current density of 3002Ag((Pd+Pt))(-1) at a -0.05V potential.
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