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Cited by 65Electrocatalysts for Energy ConversionFuel Cells and Related MaterialsCatalytic Processes in Materials Science

Concave Pt–Zn Nanocubes with High‐Index Faceted Pt Skin as Highly Efficient Oxygen Reduction Catalyst

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Liu, Mengli, Lu, Bang‐An, Yang, Gege, Yuan, Pengfei, Xia, Huicong, Wang, Yajin, Guo, Kai, Zhao, Shuyan +6 more·2022·Advanced Science
DOI 10.1002/advs.202200147PMC PMC9036018
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Abstract

High dosage of expensive Pt to catalyze the sluggish oxygen reduction reaction (ORR) on the cathode severely impedes the commercialization of proton exchange membrane fuel cells. Therefore, it is urgent to cut down the Pt catalyst by efficiently improving the ORR activity while maintaining high durability. Herein, magic concave Pt–Zn nanocubes with high‐index faceted Pt skin (Pt 78 Zn 22) are proposed for high‐efficiency catalysis toward proton exchange membrane fuel cells. These unique structural features endow the Pt‐skin Pt 78 Zn 22/KB with a mass activity of 1.18 mA μg Pt–1 and a specific activity of 3.64 mA cm–2 for the ORR at 0.9 V (vs RHE). Meanwhile, the H 2–O 2 fuel cell assembled by this catalyst delivers an ultrahigh peak power density of ≈1449 mW cm–2. Both experiments and theoretical calculations show that the electronic structure of the surface is adjusted, thereby shortening the length of the Pt–Pt bond and reducing the adsorption energy of OH*/O* on the Pt surface. This work demonstrates the synergistic effect of the oxidation‐resistant metal Zn and the construction of Pt‐rich surface engineering. Also, it guides the future development of catalysts for their practical applications in energy conversion technologies and beyond.

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  • Introduction of elemental S with stronger electronegativity results in a rather large positive shift in Pt 4f signals (about 0.9 eV), compared with other Pt-based electrocatalysts (about +0.2-0.3 eV in general).

    “the introduction of elemental S with stronger electronega”

    From Realization of Au81Pd2Pt9-S8B4.6A3.4 aerogels as superior catalysts toward HER and ORR by synergism of coarse and fine tuning d-band center of Pt (2023) · cites this paper as [22]

    The Results and Discussion section reports a +0.2 eV shift in Pt 4f7/2 binding energy for Pt–Zn relative to pure Pt, supporting one example of the comparison. It does not establish that +0.2–0.3 eV is typical of Pt-based electrocatalysts generally, and it does not report an S-induced shift of about +0.9 eV. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

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References 68 · Cited by 65

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Authors
Liu, M., Lu, B., Yang, G., Yuan, P., Xia, H., Wang, Y., Guo, K., Zhao, S., Liu, J., Yu, Y., Yan, W., Dong, C., Zhang, J., & Mu, S.
Affiliations
  • Zhengzhou University (CN)
  • Shanghai Hydrogen Propulsion Technology Co., Ltd. Shanghai 200000 P. R. China
  • Jilin University (CN)
  • Tamkang University (TW)
  • College of Materials Science and Engineering Zhengzhou University Zhengzhou 450000 P. R. China
  • Wuhan University of Technology (CN)
Corresponding author
Dong, Chung‐Li
ORCID
Venue
Advanced Science
Publisher
Wiley
Published
2022-02-24
Volume
9
Issue
12
Pages
e2200147-e2200147
ISSN
2198-3844 (ISSN-L)
DOI
10.1002/advs.202200147
PMC
PMC9036018
OpenAlex
W4213419469
Cited by
65
References
68
Citations by year
2026: 11 · 2025: 16 · 2024: 16 · 2023: 15 · 2022: 7
FWCI
2.43
Type
journal article
Language
en
Open access
Licence
Locations
  • Advanced Science (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Tamkang University Institutional Repository (TKUIR) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Natural Science Foundation of China (21875221, U1967215, 22102156)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Fuel Cells and Related Materials
  • Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
Keywords
oxygen reduction reaction, concave nanocubes, high-index facets, proton exchange membrane fuel cells, H2/O2 fuel cells, surface electronic structure, Pt-Pt bond length, surface engineering, catalyst stability

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