Significant Enhancement of Hydrogen Evolution Reaction Activity by Negatively Charged Pt through Light Doping of W

Daiya Kobayashi; Hirokazu Kobayashi; Dongshuang Wu; Shinya Okazoe; Kohei Kusada; Tomokazu Yamamoto; Takaaki Toriyama; Syo Matsumura; Shogo Kawaguchi; Yoshiki Kubota; Susan Meñez Aspera; Hiroshi Nakanishi; Shigebumi Arai; Hiroshi Kitagawa

doi:10.1021/jacs.0c07143

Significant Enhancement of Hydrogen Evolution Reaction Activity by Negatively Charged Pt through Light Doping of W

J Am Chem Soc. 2020 Oct 14;142(41):17250-17254. doi: 10.1021/jacs.0c07143. Epub 2020 Sep 30.

Authors

Daiya Kobayashi^{1

2}, Hirokazu Kobayashi², Dongshuang Wu², Shinya Okazoe², Kohei Kusada², Tomokazu Yamamoto^{3

4}, Takaaki Toriyama⁴, Syo Matsumura^{3

4

5}, Shogo Kawaguchi⁶, Yoshiki Kubota⁷, Susan Meñez Aspera⁸, Hiroshi Nakanishi⁸, Shigebumi Arai¹, Hiroshi Kitagawa^{2

5

9}

Affiliations

¹ Nippon Soda Co. Ltd., Chiba Research Center, 12-54 Goi-minamikaigan, Ichihara, Chiba 290-0045, Japan.
² Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.
³ Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
⁴ Kyushu University and the Ultramicroscopy Research Center, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
⁵ INAMORI Frontier Research Center, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
⁶ Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan.
⁷ Department of Physical Science, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan.
⁸ National Institute of Technology, Akashi College, 679-3 Nishioka, Uozumi, Akashi, Hyogo 674-8501 Japan.
⁹ Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan.

PMID: 32997498
DOI: 10.1021/jacs.0c07143

Abstract

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.