In-plane strain engineering in ultrathin noble metal nanosheets boosts the intrinsic electrocatalytic hydrogen evolution activity

Wu, Geng; Han, Xiao; Cai, Jinyan; Yin, Peiqun; Cui, Peixin; Zheng, Xusheng; Li, Hai; Chen, Cai; Wang, Gongming; Hong, Xun

doi:10.1038/s41467-022-31971-4

articleNature CommunicationsJul 20, 2022GOLD OA

In-plane strain engineering in ultrathin noble metal nanosheets boosts the intrinsic electrocatalytic hydrogen evolution activity

GWGeng Wu XHXiao Han JCJinyan Cai PYPeiqun Yin PCPeixin Cui

University of Science and Technology of China · Hefei National Center for Physical Sciences at Nanoscale · +4 more institutions

PubMed

Indexed incrossrefdoajpubmed

Abstract

Strain has been shown to modulate the electronic structure of noble metal nanomaterials and alter their catalytic performances. Since strain is spatially dependent, it is challenging to expose the active strained interfaces by structural engineering with atomic precision. Herein, we report a facile method to manipulate the planar strain in ultrathin noble metal nanosheets by constructing amorphous-crystalline phase boundaries that can expose the active strained interfaces. Geometric-phase analysis and electron diffraction profile demonstrate the in-plane amorphous-crystalline boundaries can induce about 4% surface tensile strain in the nanosheets. The strained Ir nanosheets display substantially enhanced…

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Topics

Keywords

Strain engineering
Noble metal
Materials science
Electrocatalyst
Nanomaterials
Catalysis
Amorphous solid
Nanotechnology

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