Search Results - "Grilo, João PF"
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Role of salts on the electrical performance of ceria-based electrolytes: An overview
Published in Frontiers in materials (28-09-2022)“…This work provides an overview on established achievements and debatable findings involving Ca, Gd or Sm-doped ceria-based electrolytes, using Li 2 CO 3 , LiNO…”
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Electronic conductivity in Gd-doped ceria with salt additions
Published in Electrochimica acta (20-09-2019)“…Samples of Gd-doped ceria (GDC, Ce0.9Gd0.1O1.95) with eutectic mixtures of Na2CO3 and Li2CO3 (NLC), or K2CO3, Na2CO3 and Li2CO3 (KNLC) as sintering aids…”
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Changing the oxygen reaction mechanism in composite electrodes by the addition of ionic- or ambipolar-conducting phases: Series or parallel pathways
Published in Electrochimica acta (20-06-2022)“…•CGO- and CPO-based composite electrodes for solid oxide cells.•Improved catalytic behaviour of ceria with multivalent cations under high pO2.•Series pathways…”
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Performance of GDC with alkali metal carbonates as sintering aids
Published in Solid state ionics (01-03-2020)“…Gd-doped ceria electrolytes (GDC, 10 at.% Gd) were prepared using a eutectic mixture of Li and Na carbonates as sintering aid (NLC - 0, 1, 3 and 5 mol%), using…”
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A high-performance oxygen electrode for solid oxide cells: Compositional optimisation of barium cobaltite-based composites
Published in Journal of alloys and compounds (15-06-2022)“…•Effect of composition on the polarisation resistance of BCO/CGO electrodes.•50 vol% CGO-50 vol% BCO shows the lowest polarisation resistance.•The improvement…”
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Understanding the cathodic polarisation behaviour of the misfit [Ca2CoO3−δ]q[CoO2] (C349) as oxygen electrode for IT-SOFC
Published in Electrochimica acta (20-09-2018)“…Pure phase misfit Ca-cobaltite powder, [Ca2CoO3−δ]q[CoO2] (C349), was successfully synthesised by the proteic sol-gel synthesis route and characterised by…”
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Ni and Ce oxide-based hollow fibers as battery-like electrodes
Published in Journal of alloys and compounds (25-07-2020)“…Minimizing the impact of fossil fuels has led to intense research for the development of new devices and components for energy applications. In this work, we…”
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On the physico-mechanical, electrical and dielectric properties of mullite-glass composites
Published in Ceramics international (15-10-2019)“…Mullite-glass composites were obtained by solid-state reactive sintering of kaolinite clay and kaolin waste mixtures with waste additions up to 100 wt%. The…”
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Environmentally friendly synthesis methods to obtain the misfit [Ca2CoO3-δ]0.62[CoO2] thermoelectric material
Published in Materials letters (01-11-2019)“…[Display omitted] •Preparation of [Ca2CoO3-δ]0.62[CoO2] by eco-friendly synthesis methods.•Mollusk shell as a natural source of calcium…”
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Assessment of NiO-CGO composites as cermet precursors
Published in Solid state ionics (01-08-2018)“…NiO-Ce0.9Gd0.1O1.95 (NiO-CGO) composite powders produced by a one-step chemical route were assessed as precursors of fuel cell anode cermets. Porous NiO-CGO…”
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Electrochemical assessment of one-step Cu-CGO cermets under hydrogen and biogas fuels
Published in Materials letters (15-03-2017)“…[Display omitted] •CuO-CGO composite powders by a one-step synthesis method.•Electrochemical performance of one-step Cu-CGO cermets under hydrogen and…”
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