IDEAL-Cell, Innovative Dual mEmbrAne fueL-Cell: Fabrication and Electrochemical Testing of First Prototypes

Presto, Sabrina; Barbucci, Antonio; Viviani, Massimo; Ilhan, Zeynep; Ansar, Asif; Soysal, Dennis; Thorel, Alain; Abreu, Joao; Chesnaud, Anthony; Politova, T. I.; Przybylski, K.; Prażuch, J.; Brylewski, Tomasz; Zhao, Zhe; Vladikova, D.; Stoynov, Z.

doi:10.1149/1.3205594

Cited by 15 publications

(10 citation statements)

References 9 publications

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“…85 (4). The sintered ceramics, 10 mm in diameter and 3 mm thick, were annealed in air at 650 °C for 10 h in order to remove graphite from the central membrane and excess oxygen vacancies possibly produced during SPS.…”

Section: Methodsmentioning

confidence: 99%

IDEAL-Cell, a High Temperature Innovative Dual mEmbrAne Fuel-Cell

Thorel

Chesnaud

Viviani³

et al. 2009

ECS Trans.

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IDEAL-Cell is a new concept of a high temperature fuel cell operating in the range 600-700°C. It is based on the junction between the anode part of a PCFC and the cathode part of a SOFC through a mixed H+ and O2- conducting porous ceramic membrane. This concept, extensively described in the present paper, aims at avoiding all the severe pitfalls connected with the presence of water at the electrodes in both SOFC and PCFC concepts. Spark Plasma Sintering samples were designed specifically for proving the IDEAL-Cell concept. The first electrochemical results obtained at 600°C under hydrogen on millimeter thick samples show that IDEAL-Cell behaves like a high temperature fuel cell. It is estimated that the overall efficiency of this new concept should greatly surpass that of standard SOFCs and PCFCs and that the material constraints, especially in the case of interconnect materials, should significantly decrease

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Section: Methodsmentioning

confidence: 99%

IDEAL-Cell, a High Temperature Innovative Dual mEmbrAne Fuel-Cell

Thorel

Chesnaud

Viviani³

et al. 2009

ECS Trans.

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“…For these reasons, scientific and technological development of SOFCs is still highly pursued, aiming to better cell architectures and materials, among other aspects. Standard SOFCs are configured as anode-supported cells, but lots of work is being dedicated to metal-supported [4], protonic [5], and dual cells [6,7].…”

Section: Introductionmentioning

confidence: 99%

Distribution of Relaxation Times and Equivalent Circuits Analysis of Ba0.5Sr0.5Co0.8Fe0.2O3−δ

et al. 2019

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The phenomena taking place in Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) as cathodic material in solid oxide fuel cells are investigated by electrochemical impedance spectroscopy. BSCF powders are prepared by solution combustion synthesis. Measurements are collected at different temperatures, under various bias potentials and also recorded after long-term operation. Impedance spectra are thoroughly analyzed by the distribution of relaxation times (DRT) approach and compared to the standard equivalent circuits method. At 700 °C, losses are dominated by ionic conduction and charge transfer at the electrode/electrolyte interface, while oxygen adsorption and bulk diffusion provide a minor contribution to polarization. The performances of pristine materials are remarkable as a very low polarization resistance is measured at 700 °C. After prolonged testing at operative temperature, the BSCF cathodes show increasing total polarization resistance, especially due to progressive limitations in the migration of oxygen ions, caused by secondary phase formation. DRT analysis supports the physical interpretation of phenomena taking place in the material and shows the formation of a new contribution at low frequency which can be ascribed to partial decomposition of BSCF.

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“…Technical parameters that can influence the processes of production of planar SOFC and, indirectly, their performance, have also been reported in literature [6]. Several designs of planar fuel cells have been reported: anode-or cathode-supported [7]; dual membrane [8,9], which is based on properties of a mixed anionic and protonic conductor used as a central membrane; electrolyte-supported cells in symmetrical configuration [10], which are very useful as reversible solid oxide cells; and metal-supported [11].…”

Section: Introductionmentioning

confidence: 99%

Application of La-Doped SrTiO3 in Advanced Metal-Supported Solid Oxide Fuel Cells

et al. 2018

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Composite materials frequently allow the drawbacks of single components to be overcome thanks to a synergistic combination of material-and structure-specific features, leading to enhanced and also new properties. This is the case of a metallic-ceramic composite, a nickel-chromium-aluminum (NiCrAl) foam impregnated with La-doped Strontium Titanate (LST). This particular cermet has very interesting properties that can be used in different fields of application, namely: mechanical robustness provided by the metal foam; and chemical stability in harsh conditions of temperature and atmosphere by promotion of a thin protective layer of alumina (Al 2 O 3); high electronic conductivity given by a percolating ceramic conducting phase, i.e., La-doped Strontium Titanate. In this paper, its application as a current collector in a metal-supported Solid Oxide Fuel Cells (SOFC) was studied. Firstly, the electronic properties of different compositions, stoichiometric and under stoichiometric, of LST were analyzed to choose the best one in terms of conductivity and phase purity. Then, LST chemical stability was studied in the presence of Al 2 O 3 at different temperatures, gas compositions and aging times. Finally, stability and conductivity of LST-impregnated NiCrAl foam composite materials were measured, and LST was found to be fully compatible with the NiCrAl foam, as no reactions were detected in oxidizing and reducing atmosphere after up to 300 h operation at 750 • C and 900 • C between the Al 2 O 3 layer and LST. Results showed that the composite is suitable as a current collector in innovative designs of metal-supported SOFC, like the Evolve cell, in which the metallic part is supposed not only to provide the structural stability to the cell, but also to play the role of current collector due to the impregnation of ceramic material.

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IDEAL-Cell, Innovative Dual mEmbrAne fueL-Cell: Fabrication and Electrochemical Testing of First Prototypes

Cited by 15 publications

References 9 publications

IDEAL-Cell, a High Temperature Innovative Dual mEmbrAne Fuel-Cell

IDEAL-Cell, a High Temperature Innovative Dual mEmbrAne Fuel-Cell

Distribution of Relaxation Times and Equivalent Circuits Analysis of Ba0.5Sr0.5Co0.8Fe0.2O3−δ

Application of La-Doped SrTiO3 in Advanced Metal-Supported Solid Oxide Fuel Cells

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