Chemically and thermally reduced graphene oxide supported Pt catalysts prepared by supercritical deposition

Samanci, Meryem; Bayrakçeken, Ayşe

doi:10.1016/j.ijhydene.2022.04.124

Makale Tam Makale Uluslararası 2022

Chemically and thermally reduced graphene oxide supported Pt catalysts prepared by supercritical deposition

Meryem Samanci, Ayşe Bayrakçeken

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY Cilt 47 · Sayı 45 · ss. 19669–19689 · 01.05.2022

DOI ile aç

Özet

Reduced graphene oxide (RGO) is used in many energy applications, especially in Polymer Electrolyte Membrane (PEM) fuel cells, as carbon sourced catalyst support materials. In this study, thermally (T-RGO) and chemically (C-RGO) reduced GO support materials were synthesized for utilization in PEM fuel cells. Pt catalysts were synthesized using supercritical carbon dioxide (SCCO2) deposition technique over synthesized support materials. Physical (BET, SEM-EDX, FTIR, RAMAN, XRD, TEM, ICP-MS and optical tensiometer) and electrochemical (CV, PEM fuel cell test) characterizations of synthesized support materials and corresponding Pt catalysts were performed. The differences between the structures of thermally and chemically reduced graphene oxide supports and their Pt catalysts were investigated. The ECSA values of the Pt/T-RGO and Pt/C-RGO catalysts are 19.86 m(2) g(-1) and 6.31 m(2) g(-1), respectively. The current and power density values of the Pt/T-RGO and Pt/CRGO catalysts at 0.6 V are 84 mA cm(-2), 80 mA cm(-2) and 50 mW cm(-2), 45 mW cm(-2), respectively. Pt/T-RGO and Pt/C-RGO catalysts showed similar trend in PEMFC environment. (C) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Anahtar kelimeler

PERFORMANCE nanoparticles PARTICLE-SIZE CARBON NANOTUBES FACILE SYNTHESIS Reduced graphene oxide PEMFC ELECTRODES LAYERS PEM fuel cell MESOPOROUS CARBON Chemical Reduction Thermal reduction SCCO2 deposition PLATINUM CATALYST

Atıf için künye

Samanci, M., & Bayrakçeken, A. (2022). Chemically and thermally reduced graphene oxide supported Pt catalysts prepared by supercritical deposition. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 47(45), 19669–19689. https://doi.org/10.1016/j.ijhydene.2022.04.124

BibTeX

@article{samanci2022-187508,
  author = {Samanci, Meryem and Bayrakçeken, Ayşe},
  title = {Chemically and thermally reduced graphene oxide supported Pt catalysts prepared by supercritical deposition},
  journal = {INTERNATIONAL JOURNAL OF HYDROGEN ENERGY},
  year = {2022},
  volume = {47},
  number = {45},
  pages = {19669--19689},
  issn = {0360-3199},
  doi = {10.1016/j.ijhydene.2022.04.124},
  url = {https://akademik.atauni.edu.tr/yayinlar/187508-chemically-and-thermally-reduced-graphene-oxide-supported-pt-catalysts-prepared}
}