Ligand-Effect-Induced Oxygen Reduction Reaction Activity Enhancement for Pt/Zr/Pt(111) Surfaces with Tensile Strain Relieved by Stacking Faults

Daisuke Kudo, Soma Kaneko, Rikiya Myochi, Yoshihiro Chida, Naoto Todoroki, Tadao Tanabe, Toshimasa Wadayama

研究成果: Article査読

4 被引用数 (Scopus)

抄録

Oxygen reduction reaction (ORR) properties are investigated for the Pt/Zr/Pt(111) surfaces prepared through arc-plasma depositions of Zr and Pt on a Pt(111) substrate. The synthesized Pt(111)-shell surfaces on Pt-Zr(111) alloy layers exhibited 3- to 5-fold higher ORR activities than the clean Pt(111): the ligand effect induced by charge transfers between Pt and Zr was considered to be the dominant activity enhancement factor, because tensile strains in the Pt-shell were relieved by the stacking faults generated in the underlaid Pt-Zr alloy layers. Furthermore, the alloy surfaces are durable against an electrochemical potential cycling. The results demonstrate that Zr should be considered for alloying elements of Pt for developments of effective ORR catalysts.

本文言語English
ページ(範囲)4597-4601
ページ数5
ジャーナルACS Applied Energy Materials
2
7
DOI
出版ステータスPublished - 2019 7 22

ASJC Scopus subject areas

  • 化学工学(その他)
  • エネルギー工学および電力技術
  • 電気化学
  • 材料化学
  • 電子工学および電気工学

フィンガープリント

「Ligand-Effect-Induced Oxygen Reduction Reaction Activity Enhancement for Pt/Zr/Pt(111) Surfaces with Tensile Strain Relieved by Stacking Faults」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル