Direct Growth of Highly Strained Pt Islands on Branched Ni Nanoparticles for Improved Hydrogen Evolution Reaction Activity

Ali Alinezhad; Lucy Gloag; Tania M Benedetti; Soshan Cheong; Richard F Webster; Martin Roelsgaard; Bo B Iversen; Wolfgang Schuhmann; J Justin Gooding; Richard D Tilley

doi:10.1021/jacs.9b07659

Direct Growth of Highly Strained Pt Islands on Branched Ni Nanoparticles for Improved Hydrogen Evolution Reaction Activity

J Am Chem Soc. 2019 Oct 16;141(41):16202-16207. doi: 10.1021/jacs.9b07659. Epub 2019 Oct 7.

Authors

Ali Alinezhad¹, Lucy Gloag¹, Tania M Benedetti¹, Soshan Cheong², Richard F Webster², Martin Roelsgaard^{3

4}, Bo B Iversen³, Wolfgang Schuhmann⁵, J Justin Gooding^{1

6}, Richard D Tilley^{1

2

6}

Affiliations

¹ School of Chemistry , The University of New South Wales , Sydney , New South Wales 2052 , Australia.
² Mark Wainwright Analytical Centre , The University of New South Wales , Sydney , New South Wales 2052 , Australia.
³ Center for Materials Crystallography, Department of Chemistry and iNANO , Aarhus University , Langelandsgade 140 , DK-8000 Aarhus C , Denmark.
⁴ PETRA III, Deutsches-Elektronen Synchrotron (DESY) , Notkestr. 85 , D-22607 Hamburg , Germany.
⁵ Analytical Chemistry - Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry , Ruhr University Bochum , Universitätsstr. 150 , D-44780 Bochum , Germany.
⁶ Australian Centre for NanoMedicine , The University of New South Wales , Sydney , New South Wales 2052 , Australia.

PMID: 31580659
DOI: 10.1021/jacs.9b07659

Abstract

The direct growth of Pt islands on lattice mismatched Ni nanoparticles is a major synthetic challenge and a promising strategy to create highly strained Pt atoms for electrocatalysis. By using very mild reaction conditions, Pt islands with tunable strain were formed directly on Ni branched particles. The highly strained 1.9 nm Pt-island on branched Ni nanoparticles exhibited high specific activity and the highest mass activity for hydrogen evolution (HER) in a pH 13 electrolyte. These results show the ability to synthetically tune the size of the Pt islands to control the strain to give higher HER activity.

Publication types

Research Support, Non-U.S. Gov't