http://www.cnr.it/ontology/cnr/individuo/prodotto/ID55421

MEAs for polymer electrolyte fuel cell (PEFC) working at medium temperature (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

MEAs for polymer electrolyte fuel cell (PEFC) working at medium temperature (Articolo in rivista) (literal)

Anno

2006-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1115/1.2217959 (literal)

Alternative label

I. Gatto; A. Saccà; A. Carbone; R. Pedicini; E. Passalacqua (2006)
MEAs for polymer electrolyte fuel cell (PEFC) working at medium temperature
in Journal of fuel cell science and technology (Print); ASME-American Society Of Mechanical Engineers, New York (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

I. Gatto; A. Saccà; A. Carbone; R. Pedicini; E. Passalacqua (literal)

Pagina inizio

361 (literal)

Pagina fine

365 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

3 (literal)

Rivista

Journal of fuel cell science and technology (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

5 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

3 (literal)

Note

Scopu (literal)
ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

ITAE-CNR (literal)

Titolo

MEAs for polymer electrolyte fuel cell (PEFC) working at medium temperature (literal)

Abstract

Recently, the CNR-ITAE activity has been addressed to the components development (electrodes and membranes) able to work in medium temperature PEFCs (80-130°C). One of the main problems to work at these temperatures is the proton conductivity loss due to a not full hydration of the membrane. For this reason a study on the modification of perfluorosulphonic membranes (like Nafion) was carried out by introducing different percentages of inorganic oxides (like SiO2, ZrO2) in the polymer matrix. These compounds have the function to improve the properties of the materials at high temperature due to their characteristics of softly proton conductor and/or hygroscopicity. The membranes were prepared by the Doctor-Blade casting technique that permits a good check of the thickness and a good reproducibility. A commercial ZrO2 was used to prepare the membranes varying the inorganic amount between 3-20 wt%. The most promising results were obtained at 120°C with a Nafion-recast membrane loaded with a 10 wt% ZrO2; a power density value of about 330 mW/cm2 at 0.6 V was reached. On the other side, an optimisation of the electrode structure was carried out, by introducing the inorganic oxide in the catalyst layer in order to improve the performance in the range of considered temperature. By using a spray technique, thin film electrodes with a Pt loading of 0.5 mg/cm2 in the catalyst layer, low PTFE content in the diffusion layer and a 30% Pt/Vulcan (E-Tek Inc.) as an electro catalyst were prepared. Different amounts of ZrO2 were introduced in the catalytic layer of the electrodes to increase the working temperature and help the water management of the fuel cell. These electrodes assembled to the modified membrane have shown a better performance at higher cell temperature than standard MEA with a power density of about 330 mWcm-2 at 130°C. (literal)

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