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Cited by 25Electrocatalysts for Energy ConversionFuel Cells and Related MaterialsCatalytic Processes in Materials Science

Effect of uniformity and surface morphology of Pt nanoparticles to enhance oxygen reduction reaction in polymer electrolyte membrane fuel cells

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Lim, Su-yeong, Kim, Sun-I, Lee, Min Seong, Bak, Su-Jeong, Lee, Duck Hyun, Kwon, Se-Hun, Kim, Taehyo·2022·International Journal of Hydrogen Energy
DOI 10.1016/j.ijhydene.2022.06.264
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Abstract

Platinum (Pt)-based electrocatalysts supported by reduced graphene oxide (rGO) is fabricated under microwave-assisted polyol method with various nucleation and growth conditions. The surface morphologies of the Pt nanoparticles (NPs) under various reaction conditions owing to different Pt NP sizes and inter-particle spacings are investigated by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, thermogravimetric analysis, cyclic and linear sweep voltammetry, and electrochemical impedance spectroscopy. The synthesized Pt/rGO catalyst under nucleation and growth times of 10 s and 50 s, respectively, exhibits excellent catalytic activity with increased electrochemical surface area, high density, good uniformity and surface morphology with a particle size and inter-particle spacing of 2.16 nm and 17.2 nm, respectively. These results elucidate the relationship between the Pt NP morphology distribution and oxygen reduction reaction of catalysts in polymer electrolyte membrane fuel cell systems. We also highlight the important role of size and inter-particle spacing on the Pt electrochemical catalystic performance.

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  • The absence of Pt peaks in XRD on most samples is likely attributable to the low Pt loadings and small average sizes of Pt-NPs.

    “no Pt peaks were detected via XRD on most samples: this result is likely to be attributed to the low-Pt loadings and small average sizes of Pt-NPs.[70]”

    From Synthesis of Pt Carbon Aerogel Electrocatalysts with Multiscale Porosity Derived from Cellulose and Chitosan Biopolymer Aerogels via Supercritical Deposition for Hydrogen Evolution Reaction (2025) · cites this paper as [70]

    In the rGO-supported Pt NP characterization section (pp. 29456–29466), the paper links an indistinct Pt signal in particular catalysts to small, low-density nanoparticles; it also reports low Pt content for one of them. It does not support the claim that Pt peaks were absent from most samples: the section says the other XRD patterns clearly showed characteristic Pt peaks. (LLM, conf=0.88)

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Cited by

Sorted by citations

Authors
Lim, S.-Y., Kim, S.-I., Lee, M. S., Bak, S.-J., Lee, D. H., Kwon, S.-H., & Kim, T.
Affiliations
  • Pusan National University (KR)
  • Korea Institute of Industrial Technology (KR)
Corresponding author
  • Kwon, Se-Hun
  • Kim, Taehyo
ORCID
Venue
International Journal of Hydrogen Energy
Publisher
Elsevier BV
Published
2022-08
Volume
47
Issue
68
Pages
29456-29466
ISSN
0360-3199 (ISSN-L)
DOI
10.1016/j.ijhydene.2022.06.264
OpenAlex
W4292244683
Cited by
25
References
0
Citations by year
2026: 5 · 2025: 7 · 2024: 6 · 2023: 6 · 2022: 1
FWCI
0.90
Type
journal article
Language
en
Open access
Licence
Locations
International Journal of Hydrogen Energy (publishedVersion, cc-by)
Funders
Korea Institute of Industrial Technology (JA220008, JE220003)
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
platinum nanoparticles, oxygen reduction reaction, proton exchange membrane fuel cells, reduced graphene oxide, microwave-assisted polyol synthesis, nanoparticle size, interparticle distance, surface morphology, electrocatalysts, electrochemically active surface area

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