Design, synthesis and performance of Ba-doped derivatives of SrMo0.9Fe0.1O3-δ perovskite as anode materials in SOFCs

Sydyknazar, Sabina; Cascos, Vanessa; Fernández‐Díaz, M. T.

doi:10.1016/j.jmat.2018.12.001

Cited by 6 publications

(2 citation statements)

References 16 publications

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“…Solid oxide fuel cells (SOFCs) are known as a current generation electrochemical devices that can produce electrical energy through of oxidation and reduction reactions [1]. The SOFCs devices are considered as a flexible-environmental-friendly solution for the electric energy generation from hydrogen, natural gas and other renewable fuels, giving much higher efficiencies than conventional energy systems [2][3][4][5][6][7][8]. The high operation temperature of electrolyte in SOFCs (900 °C) is an important limitation in commercial applications [9].…”

Section: Introductionmentioning

confidence: 99%

Microwave irradiation synthesis to obtain La0.7-xPrxCa0.3MnO3 perovskites: Electrical and electrochemical performance

Ferrel-Álvarez

Domínguez‐Crespo

Cong

et al. 2021

Journal of Alloys and Compounds

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La0.7-xPrxCa0.3MnO3 (LPCM) perovskites previously synthesized by the microwave-assisted method at 4 minutes and with different stoichiometry (x=0.35, 0.52 and 0.63) were evaluated through thermogravimetric analysis (TGA), electrical conductivity, thermal expansion coefficient (TEC), scanning electron microscopy (SEM), Brunauer-Emmet-Teller (BET) analysis and electrochemical impedance spectroscopy (EIS) using yttria stabilized zirconia (YSZ) as an electrolyte. The results are discussed in terms of the potential as cathode material to be applied in solid oxide fuel cells (SOFCs) applications at temperatures from 600 to 800 °C. Results derived from TGA showed that Pr promotes the uncoupling oxygen and oxygen vacancies favoring the fuel combusting. Also, TEC analysis revealed adequate stability between the YSZ electrolyte and the La0.7-xPrxCa0.3MnO3 to avoid cracking or failing, especially with high amount of Pr. The transition in morphology from irregular to regular shapes improves the BET and Barret-Joyner-Halenda (BJH) surfaces and promotes the triple phase boundary (TPB) connectivity. The electrical conductivity correlated to the availability in oxygen vacancies showed maximum conductivities in the order of 10 -2 S cm -1 . Activation energy (Ea) was found to be reduced with a minimum quantity of Pr (0.071 eV). EIS results indicate that the oxygen vacancies in the LPCM/YSZ system were better promoted with the highest amount of Pr= 0.63 (=0.9 V, 800 °C and 0.06 V of amplitude) in comparison with the minimum, Pr=0.35 (=1.2 V, 800 °C and 0.06 V of amplitude).

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Section: Introductionmentioning

confidence: 99%

Microwave irradiation synthesis to obtain La0.7-xPrxCa0.3MnO3 perovskites: Electrical and electrochemical performance

Ferrel-Álvarez

Domínguez‐Crespo

Cong

et al. 2021

Journal of Alloys and Compounds

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“…A porous thin film of samarium-doped ceria (SDC) on the Ni/YSZ anode improves the cell performance and minimizes carbon deposition [13,14]. Due to MIEC properties exhibited by SDC, carbon deposited on the SDC coating layer of the Ni/YSZ anode reacts with O 2− ions to form CO or CO 2 via electrochemical oxidation given by (1) Doped perovskites (AA'BB'O 3 ) may be appropriate candidates as alternative anode materials [15][16][17][18][19][20]. In our previous research, electrochemical properties of alternative anode materials including Sr 0.92 [23], and Sr 2 NiMoO 6 [24] were investigated under H 2 and CH 4 fuels.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of LaCo1-xNixO3-δ coated on Ni/YSZ anode using CH4 fuel in solid oxide fuel cells

Kim

Jang

Yun

2020

J. Electrochem. Sci. Technol

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Nickel-doped lanthanum cobalt oxide (LaCo 1-x Ni x O 3-δ , LCN) was investigated as an alternative anode material for solid oxide fuel cells. To improve its catalytic activity for steam methane reforming (SMR) reaction, Ni 2 + was substituted into Co 3 + lattice in LaCoO 3. LCN anode, synthesized using the Pechini method, reacts with yttria-stabilized zirconia (YSZ) electrolyte at high temperatures to form an electrochemically inactive phase such as La 2 Zr 2 O 7. To minimize the interlayer by-products, the LCN was coated via a double-tape casting method on the Ni/YSZ anode as a catalytic functional layer. By increasing the Ni doping amount, oxygen vacancies in the LCN increased and the cell performance improved. CH 4 fuel decomposed to H 2 and CO via SMR reaction in the LCN functional layer. Hence, the LCN-coated Ni/YSZ anode exhibited better cell performance than the Ni/YSZ anode under H 2 and CH 4 fuels. LCN with 12 mol% of Ni (LCN12)-modified Ni/ YSZ anode showed excellent long-term stability under H 2 and CH 4 conditions.

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Materials and nano-structural processes for use in solid oxide fuel cells: a review

Sharma

Park

et al. 2020

J. Korean Ceram. Soc.

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Design, synthesis and performance of Ba-doped derivatives of SrMo0.9Fe0.1O3-δ perovskite as anode materials in SOFCs

Cited by 6 publications

References 16 publications

Microwave irradiation synthesis to obtain La0.7-xPrxCa0.3MnO3 perovskites: Electrical and electrochemical performance

Microwave irradiation synthesis to obtain La0.7-xPrxCa0.3MnO3 perovskites: Electrical and electrochemical performance

Characteristics of LaCo<sub>1-x</sub>Ni<sub>x</sub>O<sub>3-δ</sub> coated on Ni/YSZ anode using CH<sub>4</sub> fuel in solid oxide fuel cells

Materials and nano-structural processes for use in solid oxide fuel cells: a review

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