Three dimensional graphene foam supported platinum-ruthenium bimetallic nanocatalysts for direct methanol and direct ethanol fuel cell applications

Chih Chien Kung, Po Yuan Lin, Yuhua Xue, Rohan Akolkar, Liming Dai, Xiong Yu, Chung Chiun Liu

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

A novel composite material of hierarchically structured platinum-ruthenium (PtRu) nanoparticles grown on large surface area three dimensional graphene foam (3D GF) is reported. 3D GF was incorporated with PtRu bimetallic nanoparticles as an electrochemical nanocatalyst for methanol and ethanol oxidation. PtRu/3D GF nanocatalyst showed a higher tolerance to poisoning by CO and exhibited improved catalytic activity for both methanol oxidation reaction (MOR) and ethanol oxidation reaction (EOR). Cyclic voltammetry (CV) results and long-term cycling stability tests demonstrated that GF provided a promising platform for the development of electrochemical nanocatalysts. Specifically, PtRu/3D GF nanocatalyst showed excellent catalytic activity toward MOR and EOR compared with PtRu/Graphene (Commercial graphene), PtRu/C (Vulcan XC-72R carbon), and PtRu alone. The crystal size of PtRu on 3D GF was reduced to 3.5 nm and its active surface area was enhanced to 186.2 m2 g-1. Consequently, the MOR and EOR rates were nearly doubled on PtRu/3D GF compared to those on PtRu/Graphene.

Original languageEnglish
Pages (from-to)329-335
Number of pages7
JournalJournal of Power Sources
Volume256
DOIs
StatePublished - 15 Jun 2014

Keywords

  • Carbon supporting materials
  • Ethanol oxidation reaction
  • Methanol oxidation reaction
  • Nanocatalysts
  • PtRu bimetallic nanoparticles
  • Three-dimensional graphene foam

Fingerprint

Dive into the research topics of 'Three dimensional graphene foam supported platinum-ruthenium bimetallic nanocatalysts for direct methanol and direct ethanol fuel cell applications'. Together they form a unique fingerprint.

Cite this