Showing papers by "José Luis de la Fuente published in 2014"
TL;DR: In this article, the rheokinetics for the formation of an advanced functional polyurethane (PU) from Butacene, which is (ferrocenylbutyl)dimethylsilane grafted hydroxyl-terminated polybutadiene (HTPB), and from isophorone diisocyanate (IPDI), has been studied through viscosity build-up during cure reaction in bulk and in isothermal conditions at different temperatures (50 −80 °C).
41 citations
TL;DR: In this article, the behavior of Fe-based non-precious metal catalysts in different electrolytes and the repercussion for the oxygen reduction reaction (ORR) has been studied.
38 citations
TL;DR: In this article, a functional polyurethane (PU) segmented block copolymer formation was studied using the use of rheological measurements to monitor the entire curing process.
34 citations
13 May 2014
TL;DR: In this paper, the performance of Pt3Sn for the electrooxidation of ethanol and adsorbed carbon monoxide (COad) in acid medium was studied by a combination of electrochemical and in-situ spectroscopic methods, namely, infrared reflection absorption spectroscopy and differential electrochemical mass spectrometry (DEMS).
Abstract: Monodispersed Pt3Sn nanoparticles were prepared through a mild thermal synthesis in the presence of surfactants. The performance of Pt3Sn for the electrooxidation of ethanol and adsorbed carbon monoxide (COad) in acid medium was studied by a combination of electrochemical and in situ spectroscopic methods, namely, infrared reflection absorption spectroscopy and differential electrochemical mass spectrometry (DEMS), and the results were compared to those obtained with the use of Pt black. The formation of the Pt3Sn solid solution promoted the oxidation of COad at less-positive potentials than those required for Pt black. Also, the electrooxidation of ethanol, especially at lower potentials, was more favorable with Pt3Sn, as deduced from the higher faradaic currents recorded during the ethanol oxidation reaction (EOR). However, the distribution of products as deduced by DEMS analysis suggested that the formation of C1 products, CO2 inclusive, is less significant on Pt3Sn than on Pt. In fact, the higher faradaic current recorded with the former catalyst can be attributed to the greater amounts of acetaldehyde and acetic acid formed. After the EOR, the surface of both Pt and Pt3Sn remained covered by ethanol adsorbates. Whereas C2 fragments were the main adsorbates at the surface of Pt3Sn after the EOR, both C1 and C2 species remained adsorbed at Pt black.
28 citations
TL;DR: In this article, the thermogravimetry (TG) of three polymer samples obtained from different synthetic routes was used to evaluate the thermal behavior of these black polymers, which are of significant interest in prebiotic chemistry but also in extraterrestrial chemistry.
26 citations
18 Aug 2014
TL;DR: In this paper, the authors review the current attempts in the portable fuel cell area and identify new trends and opportunities for fuel cells to succeed in this area. But, despite their promising capabilities, they have failed to oust lithium-ion batteries as the preferred power source in consumer products.
Abstract: Micro and small size fuel cells have been struggling to find a place in the portable electronics market for decades. Despite their promising capabilities, they have failed to oust lithium-ion batteries as the preferred power source in consumer products. Batteries have successfully evolved into tiny packages that are very easy to use, rechargeable and that can meet the power demands of current portable devices. In contrast, fuel cells still need to overcome cost and system complexity challenges that hinder their widespread adoption. This paper reviews the current attempts in the portable fuel cell area and identifies new trends and opportunities for fuel cells to succeed.
4 citations