Cited by 143Electrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceCO2 Reduction Techniques and Catalysts

Synergistic Hybrid Electrocatalysts of Platinum Alloy and Single-Atom Platinum for an Efficient and Durable Oxygen Reduction Reaction

Liu, Bowen, Feng, Ruohan, Busch, Michael, Wang, Sihong, Wu, Haofei, Liu, Pan, Gu, Jiajun, Bahadoran, Ashkan +5 more·2022·ACS Nano

Abstract

Pt single-atom materials possess an ideal atom economy but suffer from limited intrinsic activity and side reaction of producing H 2 O 2 in catalyzing the oxygen reduction reaction (ORR); platinum alloys have higher intrinsic activity but weak stability. Here, we demonstrate that anchoring platinum alloys on single-atom Pt-decorated carbon (Pt-SAC) surmounts their inherent deficiencies, thereby enabling a complete four-electron ORR pathway catalysis with high efficiency and durability. Pt 3 Co@Pt-SAC demonstrates an exceptional mass and specific activities 1 order of magnitude higher than those of commercial Pt/C. They are durable throughout 50000 cycles, showing only a 10 mV decay in half-wave potential. An in situ Raman analysis and theoretical calculations reveal that Pt 3 Co core nanocrystals modulate electron structures of the adjacent Pt single atoms to facilitate the intermediate absorption for fast kinetics. The superior durability is attributed to the shielding effect of the Pt-SAC coating, which significantly mitigates the dissolution of Pt 3 Co cores. The hybridizing strategy might promote the development of highly active and durable ORR catalysts.

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Crossref · 10.1021/acsnano.2c04077

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56 of 56 references verified0 citation errors · 0 not checkable

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Authors
Liu, B., Feng, R., Busch, M., Wang, S., Wu, H., Liu, P., Gu, J., Bahadoran, A., Matsumura, D., Tsuji, T., Zhang, D., Song, F., & Liu, Q.
Affiliations
  • Shanghai Jiao Tong University (CN)
  • Aalto University (FI)
  • Japan Atomic Energy Agency (JP)
Corresponding author
  • Song, Fang
  • Liu, Qinglei
Venue
ACS Nano
Published
2022-08-26
Volume
16
Issue
9
Pages
14121-14133
ISSN
  • 1936-0851 (ISSN-L)
  • 1936-086X
OpenAlex
W4293124572
Cited by
143
References
56
Citations by year
2026: 19 · 2025: 34 · 2024: 52 · 2023: 34 · 2022: 4
FWCI
5.58
Type
journal article
Language
en
Open access
closed
Locations
  • ACS Nano (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Shanghai Jiao Tong University
  • Science and Technology Commission of Shanghai Municipality (18JC1410500, 19ZR1425100, 19ZR1425300)
  • National Natural Science Foundation of China (51772187, 51902200, 52072241)
  • National High-Level Talent Program for Young Scholars
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
Keywords
oxygen reduction reaction, platinum single-atom catalysts, Pt3Co, hybrid electrocatalyst, four-electron pathway, catalyst stability, Pt dissolution, in situ Raman spectroscopy, electrocatalyst stability

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