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

被引：127

作者：

Alinezhad, Ali ^{[1
]}

Gloag, Lucy ^{[1
]}

Benedetti, Tania M. ^{[1
]}

Cheong, Soshan ^{[2
]}

Webster, Richard F. ^{[2
]}

Roelsgaard, Martin ^{[3
,4
,5
]}

Iversen, Bo B. ^{[3
,4
]}

Schuhmann, Wolfgang ^{[6
]}

Gooding, J. Justin ^{[1
,7
]}

Tilley, Richard D. ^{[1
,2
,7
]}

机构：

[1] Univ New South Wales, Sch Chem, Sydney, NSW 2052, Australia

[2] Univ New South Wales, Mark Wainwright Analyt Ctr, Sydney, NSW 2052, Australia

[3] Aarhus Univ, Dept Chem, Ctr Mat Crystallog, Langelandsgade 140, DK-8000 Aarhus C, Denmark

[4] Aarhus Univ, iNANO, Langelandsgade 140, DK-8000 Aarhus C, Denmark

[5] Deutsch Elektronen Synchrotron DESY, PETRA III, Notkestr 85, D-22607 Hamburg, Germany

[6] Ruhr Univ Bochum, Fac Chem & Biochem, CES, Analyt Chem, Univ Str 150, D-44780 Bochum, Germany

[7] Univ New South Wales, Australian Ctr NanoMed, Sydney, NSW 2052, Australia

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2019年 / 141卷 / 41期

基金：

澳大利亚研究理事会; 新加坡国家研究基金会;

关键词：

LATTICE-STRAIN; PLATINUM; PHASE; CORE; NANOWIRES; MIGRATION; CATALYSTS; ULTRAFINE;

D O I：

10.1021/jacs.9b07659

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：16202 / 16207

页数：6

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