Effect of the type of ceria dopant on the performance of Ni/CeO2 SOFC anode for ethanol internal reforming

Silva, A.A.A. da; Bion, Nicolas; Epron, Florence; Baraka, S.; Fonseca, Fábio C.; Rabelo‐Neto, Raimundo C.; Mattos, Lisiane V.; Noronha, Fábio B.

doi:10.1016/j.apcatb.2017.01.069

Cited by 87 publications

(39 citation statements)

References 70 publications

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“…To improve internal reforming of ethanol fuel in conventional SOFCs, the primary approach has been to augment or replace the Ni anode electrocatalyst. The most notable catalyst compositions can be classified into four categories: (1) Ni-based anodes such as Ni-YSZ [20,40,41], Ni-GDC [42,43], Ni-CeO2 [44,45], Ni-CZO [46], Ni-BZCYYb [47], Ni-BZCY [22,47], Ni-Al2O3 [22], Ni-SrFeLaCoO3 [48], (2) Ni-free anodes including Cu-CGO [1,41,49], Cu-CeO2 [50,51], Cu-CZO [37], Cu-CeO2-ScSZ [35,52], Ir-CGO [44], Ru-CGO [1], Ru-Cu-CZO [1], Cu-Co(Ru)-CZO [53], Pd-LSCM [54], Ru-LSCM [55], (3) Ni-alloys with Sn [56], Fe [36,48], Co [48,57], and (4) Ni-free alloys such as CuZnAl [58], and CuCoRu [53]. The majority of these studies reported low performance with ethanol (peak power <0.3 W cm -2 at 600-800 ºC), due to the use of inherently low-performing cells, incomplete reforming, or both.…”

Section: Introductionmentioning

confidence: 99%

Ethanol internal reforming in solid oxide fuel cells: A path toward high performance metal-supported cells for vehicular applications

Dogdibegovic

Fukuyama

Tucker

2020

Journal of Power Sources

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Internal reforming of ethanol fuel was investigated on high-performance metal-supported solid oxide fuel cells (MS-SOFCs) with infiltrated catalysts. The hydrogen concentration and internal reforming effects were evaluated systematically with different fuels including: hydrogen, simulated reformate, anhydrous ethanol, ethanol water blend, and hydrogen-nitrogen mixtures. A simple infiltration of Ni reforming catalyst into 40 vol.% Ni-Sm0.20Ce0.80O2-δ (Ni-SDCN40) and fuel-side metal support leads to complete internal reforming, as confirmed by comparison to simulated reformate. The performance difference between hydrogen and fully-reformed ethanol is attributed entirely to decrease in hydrogen concentration. High peak power density was achieved for a range of conditions, for example 1.0 W cm-2 at 650 °C in ethanol-water blend, and 2 1.4 W cm-2 at 700 °C in anhydrous ethanol fuel. Initial durability tests with ethanol-water blend show promising stability for 100 hours at 700 °C and 0.7 V. Carbon is not deposited in the Ni-SDCN40 anode during operation.

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Section: Introductionmentioning

confidence: 99%

Ethanol internal reforming in solid oxide fuel cells: A path toward high performance metal-supported cells for vehicular applications

Dogdibegovic

Fukuyama

Tucker

2020

Journal of Power Sources

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“…It also has no oxygen storage capacity to help improve carbon tolerance. Thus, many researchers have focused on the use of ceria‐based electrolyte such as Sm‐doped CeO 2 (SDC), Gd‐doped CeO 2 (GDC) as the ceramic phase in Ni‐based cermet anode for SOFCs operating on liquid oxygenated hydrocarbon fuels . Liu et al.…”

Section: Nickel‐based Cermet Anodesmentioning

confidence: 99%

Recent Advances in the Development of Anode Materials for Solid Oxide Fuel Cells Utilizing Liquid Oxygenated Hydrocarbon Fuels: A Mini Review

Wang

Julião

et al. 2018

Energy Tech

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Solid oxide fuel cells (SOFCs) are the most widely used fuel cells due to their excellent fuel flexibility, high efficiency and low emissions. Although the liquid fuels are easier to handle and transport than hydrogen, their direct use in SOFC leads to serious performance deterioration because of the coke formation on the traditional Ni‐based cermet anodes. In this review, the advances in the development of coking resistant anodes and the new liquid fuels such as oxygenated hydrocarbons to solve the problem of coke formation with Ni‐based anodes are summarized. It is concluded that Ni‐based cermets are still the most promising anode materials and some targeted modifications are needed to improve the coking resistance. Several strategies to improve the coking resistance of Ni‐based anodes are highlighted. The aim of this review is to provide some helpful guidance and potential directions for the future design of anodes for SOFCs utilizing liquid oxygenated hydrocarbon fuels directly.

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“…The values of BET surface area of the samples before and after reduction (Table 1) showed that the addition of Zr into ceria structure significantly improved the thermal stability of the Ni@CeZrO2 catalyst. The effect of type of dopant on the thermal stability and redox properties of ceria has been studied in the literature [20,38,39]. A higher thermal stability of CeZrO2 in comparison to CeO2 was attributed to the formation of a CeZr solid solution [28].…”

Section: 1catalyst Characterizationmentioning

confidence: 99%

Embedded Ni nanoparticles in CeZrO2 as stable catalyst for dry reforming of methane

Marinho

Rabelo‐Neto

Epron

et al. 2020

Applied Catalysis B: Environmental

139

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Ni nanoparticles embedded in CeO2 (Ni@CeO2) and CeZrO2 (Ni@CeZrO2) were synthesized by sol-gel method and compared with a Ni/CeO2 prepared by support impregnation. The performance of the catalysts was investigated for dry reforming of methane reaction. In situ XRD, XANES and TEM showed that Ni embedded in CeO2 improved the resistance to sintering along the reduction at 800 o C. Doping ceria with zirconia inhibited the growth of Ni particles and increased the oxygen mobility. SEM, TEM, Raman spectroscopy and TGA of the used catalysts after dry reforming of methane showed that carbon formation rate was significantly reduced for the catalysts containing Ni nanoparticles embedded in ceria structure. Carbon deposits were not detected over Ni@CeZrO2 after 24 h of reaction. Therefore, the control of Ni particle size and the high oxygen mobility of Ni@CeZrO2 catalyst inhibited carbon deposition and favored the mechanism of carbon removal, promoting catalyst stability.

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Effect of the type of ceria dopant on the performance of Ni/CeO2 SOFC anode for ethanol internal reforming

Cited by 87 publications

References 70 publications

Ethanol internal reforming in solid oxide fuel cells: A path toward high performance metal-supported cells for vehicular applications

Ethanol internal reforming in solid oxide fuel cells: A path toward high performance metal-supported cells for vehicular applications

Recent Advances in the Development of Anode Materials for Solid Oxide Fuel Cells Utilizing Liquid Oxygenated Hydrocarbon Fuels: A Mini Review

Embedded Ni nanoparticles in CeZrO2 as stable catalyst for dry reforming of methane

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