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Graphene-derived carbon support boosts proton exchange membrane fuel cell catalyst stability
ID Pavko, Luka (Author), ID Gatalo, Matija (Author), ID Finšgar, Matjaž (Author), ID Ruiz-Zepeda, Francisco (Author), ID Ehelebe, Konrad (Author), ID Kaiser, Pascal (Author), ID Geuß, Moritz (Author), ID Đukić, Tina (Author), ID Surca, Angelja Kjara (Author), ID Šala, Martin (Author), ID Bele, Marjan (Author), ID Cherevko, Serhiy (Author), ID Genorio, Boštjan (Author), ID Hodnik, Nejc (Author), ID Gaberšček, Miran (Author)

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Abstract
The lack of efficient and durable proton exchange membrane fuel cell electrocatalysts for the oxygen reduction reaction is still restraining the present hydrogen technology. Graphene-based carbon materials have emerged as a potential solution to replace the existing carbon black (CB) supports; however, their potential was never fully exploited as a commercial solution because of their more demanding properties. Here, a unique and industrially scalable synthesis of platinum-based electrocatalysts on graphene derivative (GD) supports is presented. With an innovative approach, highly homogeneous as well as high metal loaded platinum-alloy (up to 60 wt %) intermetallic catalysts on GDs are achieved. Accelerated degradation tests show enhanced durability when compared to the CB-supported analogues including the commercial benchmark. Additionally, in combination with X-ray photoelectron spectroscopy Auger characterization and Raman spectroscopy, a clear connection between the sp$^2$ content and structural defects in carbon materials with the catalyst durability is observed. Advanced gas diffusion electrode results show that the GD-supported catalysts exhibit excellent mass activities and possess the properties necessary to reach high currents if utilized correctly. We show record-high peak power densities in comparison to the prior best literature on platinum-based GD-supported materials which is promising information for future application.

Language:English
Keywords:PEMFC, durability, carbon support, reduced graphene oxide, mass transport
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FKKT - Faculty of Chemistry and Chemical Technology
Publication status:Published
Publication version:Version of Record
Year:2022
Number of pages:Str. 9540–9548
Numbering:Vol. 12, iss. 15
PID:20.500.12556/RUL-140822 This link opens in a new window
UDC:66
ISSN on article:2155-5435
DOI:10.1021/acscatal.2c01753 This link opens in a new window
COBISS.SI-ID:116596995 This link opens in a new window
Publication date in RUL:19.09.2022
Views:535
Downloads:292
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Record is a part of a journal

Title:ACS catalysis
Shortened title:ACS catal.
Publisher:American Chemical Society
ISSN:2155-5435
COBISS.SI-ID:518529817 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:Slovenian
Keywords:kemijska tehnologija, kataliza, ogljik, grafenov oksid

Projects

Funder:ARRS - Slovenian Research Agency
Project number:P2-0393
Name:Napredni materiali za nizkoogljično in trajnostno družbo

Funder:ARRS - Slovenian Research Agency
Project number:P1-0034
Name:Analitika in kemijska karakterizacija materialov ter procesov

Funder:ARRS - Slovenian Research Agency
Project number:P1-0175
Name:Napredna anorganska kemija

Funder:ARRS - Slovenian Research Agency
Project number:P2-0423
Name:Sodobni akumulatorji kot podpora zelenemu prehodu in elektromobilnosti

Funder:ARRS - Slovenian Research Agency
Project number:P2-0118
Name:Tekstilna kemija in napredni tekstilni materiali

Funder:ARRS - Slovenian Research Agency
Project number:NC-0007
Name:Visoko aktivna katoda z ultra nizko vsebnostjo PGM in MEA integracija za sintezo v eno PEMFC celico

Funder:ARRS - Slovenian Research Agency
Project number:N2-0087
Name:Razvoj novih membran in elektrod na osnovi grafena za uporabo v etanolovih gorivnih celicah

Funder:EC - European Commission
Funding programme:H2020
Project number:852208
Name:Towards Nanostructured Electrocatalysts with Superior Stability
Acronym:123STABLE

Funder:EC - European Commission
Funding programme:H2020
Project number:966654
Name:Assessing the Technical and Business Feasibility of Highly-active and Stable Intermetallic Pt-alloy Catalysts for Application in PEMFCs
Acronym:StableCat

Funder:Other - Other funder or multiple funders
Funding programme:NATO, Science for Peace and Security
Project number:G5729

Funder:Other - Other funder or multiple funders
Funding programme:NIC
Acronym:NICKI

Funder:Other - Other funder or multiple funders
Funding programme:Germany, Federal Ministry for Economic Affairs and Energy (BMWi)
Project number:03ETB027A

Funder:Other - Other funder or multiple funders
Funding programme:Germany, Federal Ministry for Economic Affairs and Energy (BMWi)
Project number:03EI3029A

Funder:Other - Other funder or multiple funders
Funding programme:Heinrich Böll Foundation

Funder:Other - Other funder or multiple funders
Funding programme:Republic of Slovenia, Ministry of Education, Science and Sport

Funder:EC - European Commission
Funding programme:European Regional Development Fund

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