{
  "abstract": "Low-temperature electrochemical hydrogen compression can combine H2 compression and purification, but CO impurities in practical H2 feeds rapidly poison Pt anodes. Here, we use sputter- and electrodeposited Pt on Ti disk model electrodes to assess whether ultrathin polydimethylsiloxane (PDMS)-derived amorphous silica overlayers can improve CO tolerance during the hydrogen oxidation reaction (HOR). Fourier-transform infrared reflection–absorption and low-energy ion-scattering spectroscopy confirmed conformal and amorphous silica overlayer formation on Pt. Nominal thickness-dependent measurements revealed a narrow activity-protection window within the sub-10 nm regime. 2–3 nm silica overlayers provided limited CO tolerance, whereas increasing the nominal thickness from 7 to 8 nm strongly suppressed HOR activity. Benchmarking against active electrochemical regeneration showed that bare Pt operated at 0.15 V vs. RHE with 15 s CO-stripping pulses at 0.85 V vs. RHE delivered a 1.8 times higher time-averaged HOR power density than silica-coated Pt. However, the pulses introduced an 8% energy-efficiency loss and rely on repeated high-potential cycling that accelerates electrode degradation. Importantly, under fixed-current operation, silica-coated Pt reduced the cumulative HOR energy demand under CO contamination by a factor of up to 3.6. These results establish ultrathin silica overlayers as a promising interfacial design strategy for CO-tolerant hydrogen oxidation and motivate translation to gas-diffusion electrodes (GDEs), where homogeneous and selective coating of porous electrodes remains the key challenge.",
  "abstract_shown": true,
  "affiliations": [
    "aMESA+ Institute of Nanotechnology, Department of Chemical Engineering, Faculty of Science and Technology, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands.",
    "aMESA+ Institute of Nanotechnology, Department of Chemical Engineering, Faculty of Science and Technology, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands.bFakultät für Chemie & Biochemie, Technische Chemie - Energie und Umweltrelevante Katalyse, Ruhr-Universität Bochum, Germany."
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Christos Englezos",
      "orcid": "0009-0000-1965-7748"
    },
    {
      "affs": [
        0
      ],
      "name": "Marco Altomare",
      "orcid": "0000-0002-7237-8809"
    },
    {
      "affs": [
        0
      ],
      "name": "Guido Mul",
      "orcid": "0000-0001-5898-6384"
    },
    {
      "affs": [
        1
      ],
      "name": "Bastian Mei",
      "orcid": "0000-0002-3973-9254"
    },
    {
      "affs": [
        0
      ],
      "name": "Georgios Katsoukis",
      "orcid": "0000-0001-7254-4072"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0nqz5se0r5rym.bib",
  "cited_by": 0,
  "doi": "10.1039/d6ey00101g",
  "fulltext_url": "https://pubs.rsc.org/ey/article-pdf/4/6/1336/14689436/d6ey00101g.pdf",
  "id": "0nqz5se0r5rym",
  "issns": [
    "2753-801X"
  ],
  "landing_url": "https://doi.org/10.1039/d6ey00101g",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "lcc",
      "GE1-350"
    ],
    [
      "lcc",
      "TJ807-830"
    ],
    [
      "openalex",
      "2105|Electrocatalysts for Energy Conversion"
    ]
  ],
  "openalex": "W7204098325",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-08-01",
  "publisher": "The Royal Society of Chemistry",
  "ris": "https://research.draconitic.com/paper/0nqz5se0r5rym.ris",
  "sources": [
    {
      "first_seen": "2026-11-06T14:21:07Z",
      "native_id": "0fd225ed75c04fd6a2f5509e95cf334a",
      "source": "doaj",
      "url": "https://doi.org/10.1039/d6ey00101g"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2105|Electrocatalysts for Energy Conversion",
      "subfield": "electrochemistry-energy"
    }
  ],
  "title": "CO-tolerant hydrogen oxidation on Pt enabled by ultrathin silica overlayers",
  "title_text": "CO-tolerant hydrogen oxidation on Pt enabled by ultrathin silica overlayers",
  "type": "peer-reviewed",
  "updated_at": "2026-11-08T14:20:21Z",
  "url": "https://research.draconitic.com/paper/0nqz5se0r5rym",
  "venue": "EES Catalysis",
  "versions": []
}