Search Results - "Sequeira, C.A.C."

Sodium borohydride as a fuel for the future by Santos, D.M.F., Sequeira, C.A.C.

“…In a time of unprecedented change in environmental, geopolitical and socio-economic world affairs, the search for new energy materials has become a topic of…”
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Electrochemical conversion of CO2 to C2 hydrocarbons using different ex situ copper electrodeposits by Gonçalves, M.R., Gomes, A., Condeço, J., Fernandes, T.R.C., Pardal, T., Sequeira, C.A.C., Branco, J.B.

“…The electrodeposition of copper on copper electrodes was used to increase the copper active surface area available for the electrochemical conversion of CO2 to…”
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Reduced graphene oxide assembled Pd-based nanoalloys for hydrogen evolution reaction by Cardoso, J.A.S.B., Amaral, L., Metin, Ö., Cardoso, D.S.P., Sevim, M., Sener, T., Sequeira, C.A.C., Santos, D.M.F.

“…Developing novel and efficient electrocatalysts is vital to overcome most of the technical and economic issues associated with the hydrogen production via…”
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Platinum–rare earth electrodes for hydrogen evolution in alkaline water electrolysis by Santos, D.M.F., Sequeira, C.A.C., Macciò, D., Saccone, A., Figueiredo, J.L.

“…In the new “Hydrogen Economy” concept, water electrolysis is considered one of the most promising technologies for hydrogen production. Novel electrocatalytic…”
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Nickel–rare earth electrodes for sodium borohydride electrooxidation by Santos, D.M.F., Šljukić, B., Amaral, L., Milikić, J., Sequeira, C.A.C., Macciò, D., Saccone, A.

“…[Display omitted] •NiDy and NiSm alloys are tested as electrocatalysts of borohydride oxidation reaction.•Alloys electroactivity are correlated to their…”
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Carbon-supported Pt0.75M0.25 (M=Ni or Co) electrocatalysts for borohydride oxidation by Šljukić, B., Milikić, J., Santos, D.M.F., Sequeira, C.A.C.

“…•BH4− electrooxidation at carbon supported Pt-alloys (Pt0.75M0.25/C, M=Ni or Co).•Influence of BH4− concentration and temperature on BH4−…”
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Platinum-rare earth cathodes for direct borohydride-peroxide fuel cells by Cardoso, D.S.P., Santos, D.M.F., Šljukić, B., Sequeira, C.A.C., Macciò, D., Saccone, A.

“…Hydrogen peroxide (H2O2) is being actively investigated as an oxidant for direct borohydride fuel cells. Herein, platinum-rare earth (RE = Sm, Dy, Ho) alloys…”
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On the electrosynthesis of sodium borohydride by Santos, D.M.F., Sequeira, C.A.C.

“…Sodium borohydride (NaBH 4) is a versatile reducing agent used in many industrial processes. These include organic and pharmaceutical synthesis, wastewater…”
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Electrochemistry of hydrogen evolution in ionic liquids aqueous mixtures by Amaral, L., Cardoso, D.S.P., Šljukić, B., Santos, D.M.F., Sequeira, C.A.C.

“…[Display omitted] •[Emim][MeSO3] is used as electrolyte additive for HER in 25–85 °C temperature range.•[Emim][MeSO3] addition accelerates H2 evolution rate at…”
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Electrocatalytic approach for the efficiency increase of electrolytic hydrogen production: Proof-of-concept using platinum--dysprosium alloys by Santos, D.M.F., Šljukić, B., Sequeira, C.A.C., Macciò, D., Saccone, A., Figueiredo, J.L.

“…Development of electrocatalytic materials for the hydrogen evolution reaction (HER) is attempted with the aim of reducing the water electrolysis overpotential…”
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PtNi supported on binary metal oxides: Potential bifunctional electrocatalysts for low-temperature fuel cells? by Martins, M., Šljukić, B., Sequeira, C.A.C., Soylu, G.S.P., Yurtcan, A.B., Bozkurt, G., Sener, T., Santos, D.M.F.

“…[Display omitted] PtNi NPs supported on Mn2O3 and on two binary metal oxides, Mn2O3-NiO and Mn2O3-TiO2, showed high performance for borohydride oxidation…”
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Manganese dioxide electrocatalysts for borohydride fuel cell cathodes? by Šljukić, B., Santos, D.M.F., Sequeira, C.A.C.

“…► Synthesis of composites of MnO2 with activated carbon via two different methods. ► “Low-temperature” composite reduces O2 in alkaline media through…”
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Perovskite cathodes for NaBH4/H2O2 direct fuel cells by Santos, D.M.F., Gomes, T.F.B., Šljukić, B., Sousa, N., Sequeira, C.A.C., Figueiredo, F.M.L.

“…Performance of a direct borohydride/peroxide fuel cell (DBPFC) using La0.7Sr0.3MnO3 (LSM) cathode and comparison with a DBPFC using a Pt cathode (inset)…”
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Ethanol Electrooxidation at Platinum-Rare Earth (RE = Ce, Sm, Ho, Dy) Binary Alloys by Santos, D.M.F., Lourenço, J.R.B., Macciò, D., Saccone, A., Sequeira, C.A.C., Figueiredo, J.L.

“…Proton exchange membrane fuel cells and direct alcohol fuel cells have been extensively studied over the last three decades or so. They have emerged as…”
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Electrocatalytic activity of simple and modified Fe–P electrodeposits for hydrogen evolution from alkaline media by Sequeira, C.A.C., Santos, D.M.F., Brito, P.S.D.

“…Electrodeposition of Fe–P, Fe–P–Pt and Fe–P–Ce into copper substrates is carried out under galvanostatic conditions. The influence of the current density on…”
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Platinum-rare earth intermetallic alloys as anode electrocatalysts for borohydride oxidation by Santos, D.M.F., Saturnino, P.G., Macciò, D., Saccone, A., Sequeira, C.A.C.

“…[Display omitted] ► Pt and Pt–RE (RE = Ho, Sm, Ce) alloys show catalytic activity for BH 4 − oxidation. ► BH 4 − direct/indirect oxidation proceeds via highly…”
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Versatile insertion capability of Na1.2V3O8 nanobelts in aqueous electrolyte solutions by Vujković, M., Paunković, B. Sljukić, Simatović, I. Stojković, Mitrić, M., Sequeira, C.A.C., Mentus, S.

“…XRD pattern, microphotography of nanocrystal particle shape, and cyclovoltammograms in aqueous Li, Na and Mg nitrate solutions of layered Na1.2V3O8. •layered…”
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Effect of alloys modified by sodium borohydride alkaline solutions on the kinetics of hydrogen evolution reaction at Mm(Ni 3.6Co 0.7Mn 0.4Al 0.3) 1.15 hydride electrodes by Santos, D.M.F., Sequeira, C.A.C., Lobo, R.F.M.

“…The effects of treating the alloy powder of an electrode with 6 M sodium hydroxide solution containing y M (y = 0.0, 0.005, 0.01, 0.02, 0.03, 0.05) sodium…”
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Enhancement of hydrogen evolution in alkaline water electrolysis by using nickel-rare earth alloys by Cardoso, D.S.P., Amaral, L., Santos, D.M.F., Šljukić, B., Sequeira, C.A.C., Macciò, D., Saccone, A.

“…Nickel–dysprosium (Ni–Dy) and nickel–samarium (Ni–Sm) alloys with 5 and 10 at% of rare earth metal were prepared by arc melting and by induction furnace…”
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Nickel-rare earth (Ce, Sm, Dy) alloy electrodes for hydrogen peroxide reduction in direct liquid fuel cells by Santos, D.M.F., Cardoso, D.S.P., Šljukić, B., Alsaiari, M., Harraz, F.A., Sequeira, C.A.C., Macciò, D., Saccone, A.

“…•Nickel-rare earth (Ce, Sm, Dy) alloys (5 and 10 at.% RE) were prepared by arc melting.•Alloys structure, morphology, and composition were characterized by…”
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