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Pt-17 nanocluster electrocatalysts: preparation and origin of high oxygen reduction reaction activity

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Title: Pt-17 nanocluster electrocatalysts: preparation and origin of high oxygen reduction reaction activity
Authors: Kawawaki, Tokuhisa Browse this author
Mitomi, Yusuke Browse this author
Nishi, Naoki Browse this author
Kurosaki, Ryuki Browse this author
Oiwa, Kazutaka Browse this author
Tanaka, Tomoya Browse this author
Hirase, Hinoki Browse this author
Miyajima, Sayuri Browse this author
Niihori, Yoshiki Browse this author
Osborn, D. J. Browse this author
Koitaya, Takanori Browse this author
Metha, Gregory F. Browse this author
Yokoyama, Toshihiko Browse this author
Iida, Kenji Browse this author →KAKEN DB
Negishi, Yuichi Browse this author
Issue Date: 24-Mar-2023
Publisher: Royal Society of Chemistry
Journal Title: Nanoscale
Volume: 15
Issue: 16
Start Page: 7272
End Page: 7279
Publisher DOI: 10.1039/d3nr01152f
Abstract: We recently found that [Pt-17(CO)(12)(PPh3)(8)](z) (Pt = platinum; CO = carbon monoxide; PPh3 = triphenylphosphine; z = 1+ or 2+) is a Pt nanocluster (Pt NC) that can be synthesized with atomic precision in air. The present study demonstrates that it is possible to prepare a Pt-17-supported carbon black (CB) catalyst (Pt-17/CB) with 2.1 times higher oxygen reduction reaction (ORR) activity than commercial Pt nanoparticles/CB by the adsorption of [Pt-17(CO)(12)(PPh3)(8)](z) onto CB and subsequent calcination of the catalyst. Density functional theory calculation strongly suggests that the high ORR activity of Pt-17/CB originates from the surface Pt atoms that have an electronic structure appropriate for the progress of ORR. These results are expected to provide design guidelines for the fabrication of highly active ORR catalysts using Pt NCs with a diameter of about 1 nm and thereby enabling the use of reduced amounts of Pt in polymer electrolyte fuel cells.
Type: article
Appears in Collections:触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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