Epitaxial Growth of Ultrathin Highly Crystalline Pt-Ni Nanostructure on a Metal Carbide Template for Efficient Oxygen Reduction Reaction

Bibliographische Detailangaben
Veröffentlicht in:	Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 12 vom: 30. März, Seite e2109188
1. Verfasser:	Ding, Hui (VerfasserIn)
Weitere Verfasser:	Wang, Peng, Su, Caijie, Liu, Hongfei, Tai, Xiaolin, Zhang, Nan, Lv, Haifeng, Lin, Yue, Chu, Wangsheng, Wu, Xiaojun, Wu, Changzheng, Xie, Yi
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2022
Zugriff auf das übergeordnete Werk:	Advanced materials (Deerfield Beach, Fla.)
Schlagworte:	Journal Article core-shell structures epitaxial growth highly crystalline nanocages interfacial lattice plane mismatch oxygen reduction reaction

Beschreibung
Zusammenfassung:	© 2022 Wiley-VCH GmbH. Structure engineering strategies such as core-shell and hollow nanostructures are effective pathways to improve the utilization of noble metals for catalysis. However, nowadays materials design based on these strategies still largely rely on precious metal templates. Herein, the epitaxial growth of highly crystalline Pt3 Ni overlayer on earth-abundant nickel carbide is reported, forming Ni3 CPt3 Ni core-shell nanoparticles with a well-defined interface through a new lattice-match-directed synthetic strategy. Derived from such core-shell nanostructures, ultrathin highly crystalline Pt3 Ni nanocages have an advantageous configuration of oxygen reduction reaction (ORR)-favored facets and inherently high active surface area for the ORR, bringing high mass activity and specific activity as much as 4.71 A mgPt -1 and 5.14 mA cm-2 , which are 26 and 20 times to that of commercial Pt/C, respectively. This novel epitaxial growth of platinum opens up new avenues to rationally design highly active and economical electrocatalysts
Beschreibung:	Date Revised 24.03.2022 published: Print-Electronic Citation Status PubMed-not-MEDLINE
ISSN:	1521-4095
DOI:	10.1002/adma.202109188