A facile synthesis and assembly of ultrasmall Pt nanoparticles on reduced graphene oxide carbon black hybrid for enhanced performance in PEMFC

Sevim Bayrak, Melike; Kaplan, Begum Yarar; Metin, Onder; Gursel, Selmiye Alkan

doi:10.1016/j.matdes.2018.04.041

Makale Tam Makale Uluslararası 2018

A facile synthesis and assembly of ultrasmall Pt nanoparticles on reduced graphene oxide carbon black hybrid for enhanced performance in PEMFC

Melike Sevim Bayrak, Begum Yarar Kaplan, Onder Metin, Selmiye Alkan Gursel

MATERIALS & DESIGN Cilt 151 · ss. 29–36 · 05.08.2018

DOI ile aç

Özet

A new and straightforward approach for the synthesis of ultrasmall and monodisperse Pt nanoparticles (NPs) and their controlled assembly on graphene based supports including reduced graphene oxide (rGO), commercial carbon black (VC) and rGO-VC hybrid were reported. These supported NPs were utilized as the electrocatalysts for polymer electrolyte membrane fuel cells (PEMFC). Surfactant-assisted reduction of platinum(II) acetylacetonate in hot organic solution yielded 1.2 nm Pt NPs. These ultrasmall Pt NPs were decorated on rGO, VC and the rGO-VC hybrid by using a simple liquid-phase self-assembly method. In the previous studies on Pt/rGO-VC hybrids, on one hand, Pt NPs were synthesized in situ on support, on the other hand, VC was added to synthesized Pt/rGO, and their fuel cell performance have been rarely shown. In our study, rGO and VC were directly mixed and prepared Pt NPs were assembled on rGO-VC hybrid support. Pt/rGO-VC hybrid electrocatalyst possessed substantially better electrocatalytic activity owing to better utilization of Pt compared to Pt/rGO and Pt/VC. Membrane electrode assemblies based on resultant catalysts were characterized in-situ in PEMFC. A superior PEMFC performance of 857 mW cm(-2) (maximumpower density) was achieved with the hybrid catalyst as compared to Pt NPs supported on rGO or VC. (C) 2018 Elsevier Ltd. All rights reserved.

Anahtar kelimeler

support Reduced graphene oxide AMMONIA BORANE METAL NANOPARTICLES nanocatalyst platinum ELECTROCHEMICAL PERFORMANCE Oxygen reduction reaction Hybrid support MEMBRANE FUEL-CELLS CATALYST PREPARATION METHODS ELECTROCATALYTIC ACTIVITY Polymer electrolyte membrane fuel cell POLYMER ELECTROLYTE PLATINUM NANOPARTICLES

Atıf için künye

Sevim Bayrak, M., Kaplan, B. Y., Metin, O., & Gursel, S. A. (2018). A facile synthesis and assembly of ultrasmall Pt nanoparticles on reduced graphene oxide carbon black hybrid for enhanced performance in PEMFC. MATERIALS & DESIGN, 151, 29–36. https://doi.org/10.1016/j.matdes.2018.04.041

BibTeX

@article{sevimbayrak2018-56567,
  author = {Sevim Bayrak, Melike and Kaplan, Begum Yarar and Metin, Onder and Gursel, Selmiye Alkan},
  title = {A facile synthesis and assembly of ultrasmall Pt nanoparticles on reduced graphene oxide carbon black hybrid for enhanced performance in PEMFC},
  journal = {MATERIALS & DESIGN},
  year = {2018},
  volume = {151},
  pages = {29--36},
  issn = {0264-1275},
  doi = {10.1016/j.matdes.2018.04.041},
  url = {https://akademik.atauni.edu.tr/yayinlar/56567-a-facile-synthesis-and-assembly-of-ultrasmall-pt-nanoparticles-on-reduced}
}