2020年10月14日
Significant Enhancement of Hydrogen Evolution Reaction Activity by Negatively Charged Pt through Light Doping of W
Journal of the American Chemical Society
- 巻
- 142
- 号
- 41
- 開始ページ
- 17250
- 終了ページ
- 17254
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/jacs.0c07143
- 出版者・発行元
- American Chemical Society (ACS)
We report novel PtW solid-solution nanoparticles (NPs) produced through electrochemical cleaning of core/shell PtW@WO3 NPs. The resulting PtW NPs achieved a record hydrogen evolution reaction (HER) performance as a class of Pt-based solid-solution alloys. A current density of 10 mA cm-2 was reached with an overpotential of 19.4 mV, which is significantly lower than that of a commercial Pt catalyst (26.3 mV). The PtW NPs also exhibited long-term stability. Theoretical calculations revealed that negatively charged Pt atoms adjacent to a W atom provide favorable hydrogen adsorption energies for the HER, realizing significantly enhanced HER activity.
- リンク情報
-
- DOI
- https://doi.org/10.1021/jacs.0c07143
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/32997498
- URL
- https://pubs.acs.org/doi/pdf/10.1021/jacs.0c07143
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85092944317&origin=inward
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85092944317&origin=inward
- ID情報
-
- DOI : 10.1021/jacs.0c07143
- ISSN : 0002-7863
- eISSN : 1520-5126
- PubMed ID : 32997498
- SCOPUS ID : 85092944317