6533b852fe1ef96bd12aa3e0
RESEARCH PRODUCT
Advances in Anodic Alumina Membranes-based fuel cell: CsH2PO4 pore-filler as proton conductor at room temperature
Patrizia BocchettaRossella FerraroFrancesco Di Quartosubject
Renewable Energy Sustainability and the EnvironmentChemistryOpen-circuit voltageAnodic alumina membranes Cesium hydrogen phosphate Composite proton conductors Pore filling Thin film fuel cellAnalytical chemistryEnergy Engineering and Power TechnologyElectrolyteElectrochemistryDielectric spectroscopySettore ING-IND/23 - Chimica Fisica ApplicataChemical engineeringDifferential thermal analysisElectrical and Electronic EngineeringPhysical and Theoretical ChemistryThin filmShort circuitCesium hydrogen phosphate Anodic alumina membranes Pore filling Composite proton conductors Thin film fuel cellProton conductordescription
Abstract Anodic alumina membranes (AAM) filled with cesium hydrogen phosphate proton conductor have been tested as inorganic composite electrolyte for hydrogen–oxygen thin film (≤50 μm) fuel cell (TFFC) working at low temperatures (25 °C), low humidity ( T gas = 25 °C) and low Pt loading (1 mg cm −2 ). Single module TFFC delivering a peak power of around 15–27 mW cm −2 , with open circuit voltage (OCV) of about 0.9 V and short circuit current density in the range 80–160 mA cm −2 have been fabricated. At variance with pure solid acid electrolytes showing reproducibility problems due to the scarce mechanical resistance, the presence of porous alumina support allowed to replicate similar fuel cell performances over numerous AAM/CsH 2 PO 4 assemblies. A scale-up process of the electrodic area has been optimized in order to increase the delivered peak power of AAM thin film fuel cell. Morphological, chemical and electrochemical studies on the alumina composite electrolyte have been carried out by means of scanning electron microscopy, X-ray diffractometry, Micro-Raman spectroscopy, DTA/DTG analysis, ac impedance spectroscopy and single fuel cell tests.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-02-01 |