Solid Oxide Fuel Cell Fed Directly with Dry Glycerol

Faro, Massimiliano Lo; Oliveira, Vanessa L.; Reis, Rafael M.; Saglietti, G. G. A; Zignani, Sabrina Campagna; Trocino, Stefano; Ticianelli, Édson Antônio; Aricò, A.S.

doi:10.1002/ente.201700744

Cited by 14 publications

(11 citation statements)

References 23 publications

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“…This hypothesis is supported by the different electrochemical behavior of LSFC and Ni-LSFC toward the electrochemical oxidation of dry propane [ 56 ]. This material has been investigated extensively in two main cell configurations consisting of a single fuel electrode supported on three different types of supporting electrolytes (e.g., CGO [ 56 ], La 0.8 Sr 0.2 Ga 0.8 Mg 0.2 O 3 (LSGM) [ 61 ], and BaCe 0.9 Y 0.1 O 3-δ (BYCO)) and as a functional layer (pre-layer) for the anode of a commercial type cell (ASC-400B, ELCOGEN [ 62 , 63 ]). In the latter case, the SOFC consists of a dual-anode configuration where the modified perovskite acts as a catalytic pre-layer for the conversion of the organic molecules before these can reach the supporting Ni-YSZ anode.…”

Section: Electrochemical Studiesmentioning

confidence: 99%

“…One important aspect of the previous studies carried out on modified perovskite electrocatalysts has regarded the reaction mechanisms involving the direct oxidation of dry organic fuels [ 62 , 63 ]. Figure 5 depicts the mechanisms suggested for the electrochemical conversion of ethanol.…”

Section: Reaction Mechanismmentioning

confidence: 99%

“… Polarization curves for the modified perovskite-based cells operating in multifuel mode in the presence of a thick supported CGO electrolyte ( a ) adapted from [ 59 ] and with different organic fuels and cell designs ( b ) adapted from [ 56 , 57 , 58 , 61 , 62 , 63 ]. (Standard deviation was < 5 mV for each data point of the overall polarization dataset).…”

Section: Figurementioning

confidence: 99%

“…The authors of this mini-review have intensively worked on modified and exsolved perovskite for application as an anode in SOFCs for several years demonstrating an effective oxidation of various organic fuels directly fed to the cell [ 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 ]. The proper modification of commercial type ferrite-based perovskites, which are commonly used as an SOFC cathode, with small amounts of Ni has been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

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Lanthanum Ferrites-Based Exsolved Perovskites as Fuel-Flexible Anode for Solid Oxide Fuel Cells

2020

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Exsolved perovskites can be obtained from lanthanum ferrites, such as La0.6Sr0.4Fe0.8Co0.2O3, as result of Ni doping and thermal treatments. Ni can be simply added to the perovskite by an incipient wetness method. Thermal treatments that favor the exsolution process include calcination in air (e.g., 500 °C) and subsequent reduction in diluted H2 at 800 °C. These processes allow producing a two-phase material consisting of a Ruddlesden–Popper-type structure and a solid oxide solution e.g., α-Fe100-y-zCoyNizOx oxide. The formed electrocatalyst shows sufficient electronic conductivity under reducing environment at the Solid Oxide Fuel Cell (SOFC) anode. Outstanding catalytic properties are observed for the direct oxidation of dry fuels in SOFCs, including H2, methane, syngas, methanol, glycerol, and propane. This anode electrocatalyst can be combined with a full density electrolyte based on Gadolinia-doped ceria or with La0.8Sr0.2Ga0.8Mg0.2O3 (LSGM) or BaCe0.9Y0.1O3-δ (BYCO) to form a complete perovskite structure-based cell. Moreover, the exsolved perovskite can be used as a coating layer or catalytic pre-layer of a conventional Ni-YSZ anode. Beside the excellent catalytic activity, this material also shows proper durability and tolerance to sulfur poisoning. Research challenges and future directions are discussed. A new approach combining an exsolved perovskite and an NiCu alloy to further enhance the fuel flexibility of the composite catalyst is also considered. In this review, the preparation methods, physicochemical characteristics, and surface properties of exsoluted fine nanoparticles encapsulated on the metal-depleted perovskite, electrochemical properties for the direct oxidation of dry fuels, and related electrooxidation mechanisms are examined and discussed.

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Section: Electrochemical Studiesmentioning

confidence: 99%

Section: Reaction Mechanismmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Lanthanum Ferrites-Based Exsolved Perovskites as Fuel-Flexible Anode for Solid Oxide Fuel Cells

2020

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“…The authors of this mini-review have intensively worked on modified and exsolved perovskite for application as anode in SOFCs for several years demonstrating an effective oxidation of various organic fuels directly fed to the cell [49][50][51][52][53][54][55][56]. Proper modification of commercial type ferrite-based perovskites commonly used as a SOFC cathode with small amounts of Ni has been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

A Mini Review on Lanthanum Ferrites-based Exsolved Perovskites as Fuel-flexible Anode for Solid Oxide Fuel Cells

Faro¹,

Zignani²,

Aricò³

2020

Preprint

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Exsolved perovskites can be obtained from lanthanum ferrites, such as La0.6Sr0.4Fe0.8Co0.2O3, as result of Ni doping and thermal treatments. Ni can be simply added to the perovskite by an incipient wetness method. Thermal treatments include calcination in air (e.g., 500 °C) and subsequent reduction in diluted H2 at 800 °C to favor the exsolution process. The chemistry of the nanoparticles exsoluted on the substrate surface can be further modulated by a post treatment in air. These processes allow to produce a two-phase material consisting of a Ruddlesden-Popper type structure and a solid oxide solution e.g. α-Fe100-y-zCoyNizOx oxide. The formed electro-catalyst shows sufficient electronic conductivity under reducing environment at the SOFC anode. Outstanding catalytic properties are observed for the direct oxidation of dry fuels in SOFCs, including H2, methane, syngas, methanol, glycerol and propane. This anode electrocatalyst can be combined with full density electrolyte based on Gadolinia-doped Ceria or with La0.8Sr0.2Ga0.8Mg0.2O3 (LSGM) or BaCe0.9Y0.1O3-δ (BYCO) to form a complete perovskite structure-based cell. Moreover, the exsolved perovskite can be used as a coating layer or catalytic pre-layer of a conventional Ni-YSZ anode. Beside the excellent catalytic activity, this material also shows proper durability and tolerance to sulphur poisoning. In this mini review, preparation methods, physico-chemical characteristics, surface properties of exsoluted and core-shell nanoparticles encapsulated on the metal-depleted perovskite substrate surface, electrochemical properties for the direct oxidation of dry fuels and related electrooxidation mechanisms are examined and discussed.

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Intermediate-temperature solid oxide fuel cell fueled by biofuels

Elleuch

Halouani

2020

Intermediate Temperature Solid Oxide Fuel Cells

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Solid Oxide Fuel Cell Fed Directly with Dry Glycerol

Cited by 14 publications

References 23 publications

Lanthanum Ferrites-Based Exsolved Perovskites as Fuel-Flexible Anode for Solid Oxide Fuel Cells

Lanthanum Ferrites-Based Exsolved Perovskites as Fuel-Flexible Anode for Solid Oxide Fuel Cells

A Mini Review on Lanthanum Ferrites-based Exsolved Perovskites as Fuel-flexible Anode for Solid Oxide Fuel Cells

Intermediate-temperature solid oxide fuel cell fueled by biofuels

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