Direct ethanol solid oxide fuel cell operating in gradual internal reforming

Nóbrega, Shayenne D.; Galesco, M.V.; Girona, Kelly; Florio, Daniel Z. de; Steil, M.C.; Georges, Samuel; Fonseca, Fábio C.

doi:10.1016/j.jpowsour.2012.03.104

Cited by 54 publications

(42 citation statements)

References 22 publications

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“…Below 1/3, the system will not release enough steam to ensure itself complete conversion, and methane will diffuse into the cermet yielding fast coking. More details concerning this concept will be found in our previous work (7)(8)(9)(10)(11)(12). This simplified principle mechanism was applied here study and the faradaïc efficiency was first optimized in H 2 above 1/3 by adjusting the experimental parameters (fuel concentration and flow rates).…”

Section: Resultsmentioning

confidence: 99%

SOFC Long Term Operation in Pure Methane by Gradual Internal Reforming

et al. 2013

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A solid oxide fuel cell was designed to be operated in pure methane, without reforming or carrier gas. The fuel cell was built up from conventional NiO-YSZ anode supported cell with a specific Pt screen-printed anodic collecting system and a Ir-CGO catalytic layer. The operation principle is based on Gradual Internal Reforming. After an initiation in H 2 for 30 minutes, the cell was operated for almost 2000 hours in pure and dry CH 4 with a fuel utilization rate of 30 %. Intrinsic gradual degradation of 15 %/1000 h was observed, but no coking occurred at the anodic side.

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Section: Resultsmentioning

confidence: 99%

SOFC Long Term Operation in Pure Methane by Gradual Internal Reforming

et al. 2013

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“…However, spin coating has gained attention as a method to produce thin layers for SOFCs, which can be used for layer depositions for both electrolyte-and anode-supported cells [10][11][12][13][14][15][16][17][18][19]. Such technique is based on the deposition by rotation in which a suspension is spread across the surface of a substrate by a centrifugal acceleration.…”

Section: Introductionmentioning

confidence: 99%

“…Such technique is based on the deposition by rotation in which a suspension is spread across the surface of a substrate by a centrifugal acceleration. It is a widely used technique in the electronic industry, in microlithography for the manufacture of integrated circuits and for fabrication of antireflective coatings in solar cells [10][11][12][13][14][15][16][17][18][19]. Spin coating has been successfully developed to fabricate both porous electrode layers and dense electrolyte films for anode supported SOFCs, evidencing the suitability of such deposition technique [10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Optimization of spin-coated electrodes for electrolyte-supported solid oxide fuel cells

et al. 2017

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Electrodes for electrolyte-supported solid oxide fuel cells (SOFC's) were fabricated by spin coating. Strontium-doped lanthanum manganite (LSM) cathode and nickel yttria-stabilized zirconia cermet anodes were synthesized and processed for enhanced deposition conditions. The influence of electrode microstructural parameters was investigated by a systematic experimental procedure aiming at optimized electrochemical performance of single cells. Polarization curves showed a strong dependence on both electrode thickness and sintering temperature. By a systematic control of such parameters, the performance of single cells was significantly enhanced due to decreasing of polarization resistance from 26 Ω cm² to 0.6 Ω cm² at 800°C. The results showed that spin-coated electrodes can be optimized for fast and cost effective fabrication of SOFCs.

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“…The catalytic conversion of methane into hydrogen by steam reforming over Ir-CGO catalysts was previously investigated (18). Gradual internal reforming, was already demonstrated in electrolyte supported cells using pure and dry methane (7,8,(11)(12)(13)18) and ethanol (14)(15)(16) as the fuel. The catalytic aspects towards steam reforming were also intensively described (7,8,20).…”

Section: Resultsmentioning

confidence: 99%

Effect of Catalyst Layer and Fuel Utilization on the Durability of Direct Methane SOFC

Georges¹,

Nóbrega²,

Cheah³

et al. 2015

ECS Trans.

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International audienceSolid oxide fuels cells with and without anodic catalytic layer and specific anodic current collectors were developed in order to be fueled by dry methane. Due to the cell architecture integrating a 0.1wt% Ir-CGO catalyst layer onto the anode, platinum, gold and cupper screen-printed meshes were designed and optimized to ensure efficient current collection between the anode surface and the catalyst membrane. Current density and ageing in H₂ and in pure dry CH₄ respectively were compared to conventional pressed grid collecting systems. Similar performances were achieved using bulk grids or gold, platinum and copper screen-printed meshes. Operation in pure dry methane is compared with and without the catalytic layer as a function of the fuel utilization. It is demonstrated that long term operation is possible provided that sufficient faradic efficiency is achieved

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Direct ethanol solid oxide fuel cell operating in gradual internal reforming

Cited by 54 publications

References 22 publications

SOFC Long Term Operation in Pure Methane by Gradual Internal Reforming

SOFC Long Term Operation in Pure Methane by Gradual Internal Reforming

Optimization of spin-coated electrodes for electrolyte-supported solid oxide fuel cells

Effect of Catalyst Layer and Fuel Utilization on the Durability of Direct Methane SOFC

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