Enhanced Electrocatalytic Activity of Pt/3D Hierarchical Bimodal Macroporous Carbon Nanospheres

Ratna Balgis*, W. Widiyastuti, Takashi Ogi, Kikuo Okuyama

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

Proton exchange membrane fuel cells require electrocatalysts with a high platinum (Pt) loading, large active surface area, and favorable hydrodynamic profile for practical applications. Here, we report the design of three-dimensional hierarchical bimodal macroporous carbon nanospheres with an interconnected pore system, which are applied as an electrocatalyst support. Carbon-supported Pt (Pt/C) catalysts were prepared by aerosol spray pyrolysis followed by microwave chemical deposition. The hierarchical porous structures not only increased the dispersion of Pt nanoparticles but also improved catalytic performance. A hierarchical bimodal macroporous Pt/C catalyst with a mixture of 30 and 120 nm size pores showed the best performance. The electrochemical surface area and mass activity values of this support were 96 m2 g-1-Pt and 378 mA mg-1-Pt, respectively at a Pt loading of 15 wt %.

Original languageEnglish
Pages (from-to)23792-23799
Number of pages8
JournalACS applied materials & interfaces
Volume9
Issue number28
DOIs
Publication statusPublished - 19 Jul 2017

Keywords

  • Nanostructured Pt/C
  • Pt deposition
  • fuel cell
  • high-dispersibility
  • spray pyrolysis

Fingerprint

Dive into the research topics of 'Enhanced Electrocatalytic Activity of Pt/3D Hierarchical Bimodal Macroporous Carbon Nanospheres'. Together they form a unique fingerprint.

Cite this