Direct Electro-oxidation of Dimethyl Ether on Pt-Cu Nanochains.
Bar GavrielRonit SharabiLior ElbazPublished in: ChemSusChem (2017)
A new platinum-copper alloy electrocatalyst for the direct electro-oxidation of dimethyl ether (DME) has been synthesized in an easy and low-cost approach and studied by using an array of techniques, including X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, and elemental analysis. Structural characterization revealed that the synthesized PtCu nanoparticles (3 nm on average) formed homogeneous nanochains without aggregation of metallic platinum or copper. The catalyst's activity towards electro-oxidation of DME was tested using cyclic voltammetry (CV) and in membrane-electrode assembly (MEA) in a full cell and was found to be promising. The direct DME fuel cell (DDMEFC) studied in this work has relatively high energy density, of 13.5 mW cm-1 and thus shows great potential as fuel for low power fuel cells. The newly synthesized PtCu catalyst exhibited almost double the performance of commercial PtRu in electrocatalytic DME oxidation.
Keyphrases
- electron microscopy
- high resolution
- single cell
- metal organic framework
- visible light
- low cost
- hydrogen peroxide
- oxide nanoparticles
- ionic liquid
- high speed
- reduced graphene oxide
- cell therapy
- room temperature
- induced apoptosis
- electron transfer
- highly efficient
- high throughput
- mass spectrometry
- photodynamic therapy
- computed tomography
- bone marrow
- risk assessment
- cell cycle arrest
- climate change
- magnetic resonance
- oxidative stress
- tandem mass spectrometry
- cell proliferation
- solid state
- endoplasmic reticulum stress