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Title: Platinum nanosheets synthesized via topotactic reduction of single-layer platinum oxide nanosheets for electrocatalysis
Authors: Takimoto, Daisuke
Toma, Shino
Suda, Yuya
Shirokura, Tomoki
Tokura, Yuki
Fukuda, Katsutoshi  kyouindb  KAKEN_id
Matsumoto, Masashi
Imai, Hideto
Sugimoto, Wataru
Author's alias: 滝本, 大裕
當間, 志乃
須田, 祐矢
白倉, 智基
都倉, 勇貴
福田, 勝利
松本, 匡史
今井, 英人
杉本, 渉
Keywords: Electrocatalysis
Fuel cells
Two-dimensional materials
Issue Date: 2023
Publisher: Springer Nature
Journal title: Nature Communications
Volume: 14
Thesis number: 19
Abstract: Increasing the performance of Pt-based electrocatalysts for the oxygen reduction reaction (ORR) is essential for the widespread commercialization of polymer electrolyte fuel cells. Here we show the synthesis of double-layer Pt nanosheets with a thickness of 0.5 nm via the topotactic reduction of 0.9 nm-thick single-layer PtOx nanosheets, which are exfoliated from a layered platinic acid (HyPtOx). The ORR activity of the Pt nanosheets is two times greater than that of conventionally used state-of-the-art 3 nm-sized Pt nanoparticles, which is attributed to their large electrochemically active surface area (124 m² g⁻¹). These Pt nanosheets show excellent potential in reducing the amount of Pt used by enhancing its ORR activity. Our results unveil strategies for designing advanced catalysts that are considerably superior to traditional nanoparticle systems, allowing Pt catalysts to operate at their full potential in areas such as fuel cells, rechargeable metal–air batteries, and fine chemical production.
Description: 高活性・高耐久な世界最薄の白金ナノシート電極触媒を開発 --新奇軸の触媒開発で、FCVなどの飛躍的な普及拡大に期待--. 京都大学プレスリリース. 2023-01-12.
Rights: © The Author(s) 2023
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
DOI(Published Version): 10.1038/s41467-022-35616-4
PubMed ID: 36624103
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