ARDC Research Link Australia

ORCID Profile
Orcid icon. 0000-0003-4347-9923

Current Organisations
ヴェルヌクリスタル株式会社 , 広島大学大学院 , 信州大学 , 株式会社マテリアルイノベーションつくば , 株式会社クロスサイエンティア

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Publications

Publication

A Fundamental Study of Boron Deposition and Poisoning of La_0.8Sr_0.2MnO₃Cathode of Solid Oxide Fuel Cells under Accelerated Conditions

Publisher: The Electrochemical Society

Date: 2015

DOI: 10.1149/2.0141512JES

Publication

Solid‐Solution Alloy Nanoparticles of the Immiscible Iridium–Copper System with a Wide Composition Range for Enhanced Electrocatalytic Applications

Publisher: Wiley

Date: 13-03-2018

DOI: 10.1002/ANIE.201800650

Abstract: For the first time, we synthesize solid‐solution alloy nanoparticles of Ir and Cu with a size of ca. 2 nm, despite Ir and Cu being immiscible in the bulk up to their melting over the whole composition range. We performed a systematic characterization on the nature of the Ir x Cu 1− x solid‐solution alloys using powder X‐ray diffraction, scanning transmission electron microscopy coupled with energy‐dispersive X‐ray spectroscopy and X‐ray photoelectron spectroscopy. The results showed that the Ir x Cu 1− x alloys had a face‐centered‐cubic structure charge transfer from Cu to Ir occurred in the alloy nanoparticles, as the core‐level Ir 4f peaks shifted to lower energy region with the increase in Cu content. Furthermore, we observed that the alloying of Ir with Cu enhanced both the electrocatalytic oxygen evolution and oxygen reduction reactions. The enhanced activities could be attributed to the electronic interaction between Ir and Cu arising from the alloying effect at atomic‐level.