Ionic Conductor
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. ANODES FOR SOFC: REVIEW OF MATERIAL SELECTION, INTERFACE AND ELECTROCHEMICAL PHENOMENA
This paper presents a comprehensive interface and electrochemical phenomena review of different anodes for SOFC. In this way, it was possible to select some mixed electronic and ionic conductor materials alternatives to the conventional anode, Ni-YSZ conductor. New materials must present a satisfactory electronic and ionic conductivity at intermediate temper
Quím. Nova. Publicado em: 2021-01
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2. Electrical conductivity of borate, silicate and silica-sulphate glasses of alkaline ions. / Condutividade elétrica de vidros de boratos, silicatos e sílico-sulfatos de íons alcalinos.
Conducting glasses based on borates, silicates and silica-sulfates of alkali metals have been prepared from an appropriate mixture of powder of oxides, carbonates and sulfates. They were produced by fusion in a silicon carbide furnace up to 1400ºC and then by fast cooling. These materials have been analyzed with techniques of DC conductivity and Impedan
Publicado em: 2000
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3. Nuclear magnetic resonance study of proton conductor HPb2Nb3O10. nH2O. / Estudo por Ressonância Magnética Nuclear do Condutor Protônico HPb2Nb3O10. nH2O.
The protonic conductor HPb2Nb3O10. nH2O , was studied by pulsed Nuclear Magnetic Resonance (NMR) of ANTPOT.1H. The temperature dependence of the spin-lattice relaxation rate (1/T IND.1) and line width, reflect the mobility of the protonic species present in this material. The onset of ionic and molecular motions produces a strong narrowing of the line at tem
Publicado em: 1998
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4. Desenvolvimento de um capacitor eletroquimico polimerico
Conducting polymers represent an interesting class of materiaIs for using in electrochemical devices. These materials have important characteristics such as; changing from no conductor electronic state to conductor electronic state by redox process and changing of coloration by the application of an extern potential (electrochromism). The utilization of cond
Publicado em: 1997
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5. Nuclear-spin-lattice relaxation mechanics for CaF2:U3+. / Mecanismos de relaxação spin-nuclear-rede em CaF2:U3+.
In this work we describe the construction of two sample temperature controlled equipments that operate between 77K and 300K and between 300K and 700K. We show the results of T1 and T2 measurements over the temperature range of 77K to 700K with the static field Ho parallel to [111] direction and 24MHz. We discuss the T1 and T2 behavior in this range temperatu
Publicado em: 1983
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6. Espalhamento Raman dependente da temperatura no condutor superionico B-Eucrypte
By using Raman scattering techniques, we have studied the normal modes of vibration and the dynamics of the ionic motion in the superionic conductor b-Eucryptite, as a function of temperature, from room temperature to ~ 750ºC. Our results have proved that the high ionic conductivity it displays (~ 10-2 W-1cm-1, at 600ºC), can be explained in terms of the h
Publicado em: 1980