Perovskite-type Nd0.5Sr0.5Co0.5Fe0.5O3-δ as a novel cathode material for intermediate-temperate solid oxide fuel cell

Zhu, Xiufang; Qian, Cheng; Sun, Feng; Zhang, Lijing; Liu, Xuemei; Li, Denghao

doi:10.1016/j.jallcom.2019.06.231

Cited by 16 publications

(5 citation statements)

References 45 publications

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“…9,10 In the present study, lowering the working temperature of the fuel cell accompanied with desirable cell performance is the ultimate goal. 11,12 Among all types of fuel cells, solid oxide fuel cells (SOFCs) have attracted the researchers due to their high energy conversion efficiency. SOFCs have been considered as excellent technology for clean energy conversion using a number of fuels such as methanol, hydrocarbons and natural gas.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of La_xSr_1−xZn_yFe_1−yO_3−δ(x= 0.54, 0.8,y= 0.2, 0.4) as a promising cobalt free composite cathode for SOFCs

et al. 2022

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Section: Introductionmentioning

confidence: 99%

“…9,10 In the present study, lowering the working temperature of the fuel cell accompanied with desirable cell performance is the ultimate goal. 11,12…”

Section: Introductionmentioning

confidence: 99%

Evaluation of La_xSr_1−xZn_yFe_1−yO_3−δ(x= 0.54, 0.8,y= 0.2, 0.4) as a promising cobalt free composite cathode for SOFCs

et al. 2022

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“…Nickel is used in the composite anode because it has high catalytic properties for hydrogen oxidation [11]. Furthermore, the use of the composite anode enhances thermal compatibility, reduces interface resistance and lengthens the triple-phase boundary (TPB) [12,13]. In terms of NiO:BCZY composition, it has been reported that more than 40% nickel content can effectively improve electrochemical performance [14,15].…”

Section: Introductionmentioning

confidence: 99%

Lattice Expansion and Crystallite Size Analyses of NiO-BaCe0.54Zr0.36Y0.1O3-δ Anode Composite for Proton Ceramic Fuel Cells Application

et al. 2022

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This study reports on the structure analyses of NiO-BCZY (BCZY = BaCe0.54Zr0.36Y0.1O3-δ) anode composite materials with the ratio of 50:50 for proton ceramic fuel cells (PCFCs) application. A product of sintered NiO-BCZY was developed to understand the structural properties of the anode materials. The objectives of this work were (a) to investigate the lattice expansion of the anode by using a high-temperature XRD (HT-XRD) from 400–700 °C; and (b) to calculate the crystallite size of the sample by using Scherrer’s and Williamson Hall’s methods. The results obtained from the HT-XRD revealed that the diffraction peaks of NiO and BCZY are matched with the cubic phase perovskite structure. For example at T = 400 °C, the lattice parameter of NiO is a = 4.2004 Å and BCZY is a = 4.3331 Å. The observation also showed that the lattice expansion increased with the temperature. Furthermore, analyses of the Scherrer and Williamson Hall methods, respectively, showed that the crystallite size is strongly correlated with the lattice expansion, which proved that the crystallite size increased as the operating temperature increased. The increment of crystallite size over the operating temperature contributed to the increment of conductivity values of the single cell.

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“…Since the cathode reaction in PCFCs is different from that in O−SOFCs, mixed oxygen-ionic and electronic conductors (MIECs), such as Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3−δ , La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3−δ , Sm 0.5 Sr 0.5 CoO 3−δ , Nd 0.5 Sr 0.5 Co 0.5 Fe 0.5 O 3−δ that work well in O-SOFCs, did not work well in PCFCs, because many of these materials are lack of good proton transport capabilities. [10][11][12][13] In a PCFC, proton is formed on the anode which then diffuses through the electrolyte to the cathode side where it reacts with the activated oxygen to form water. If the cathode is a MIEC, the charge transfer for the reduction of O 2 to O 2− will be realized on the cathode surface, while the water formation can only appear at the electrodeelectrolyte-air triple phase boundary (TPB).…”

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confidence: 99%

Nickel Doping Manipulation towards Developing High-Performance Cathode for Proton Ceramic Fuel Cells

Liang

Zhu

et al. 2022

J. Electrochem. Soc.

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An ideal cathode for proton ceramic fuel cells (PCFCs) should have superior oxygen reduction reaction activity, high proton conductivity, good chemical compatibility with electrolyte, and sufficient stability; thus rational design of the electrode material is needed. Here, by taking advantage of the limited solubility of nickel in perovskite lattice, we propose a new dual phase cathode developed based on nickel doping manipulation strategy. We rationally design a perovskite precursor with the nominal composition of Ba(Co0.4Fe0.4Zr0.1Y0.1)0.8Ni0.2O3-δ (BCFZYN0.2). During high-temperature calcination, a nanocomposite, composed of a B-site cation deficient and nickel-doped BCFZY perovskite main phase and nanosized NiO minor phase, is formed. The NiO nanoparticles effectively improve the surface oxygen exchange kinetics and the B-site cation deficiency structure enhances proton conductivity, thus leading to superior ORR activity of BCFZYN0.2. Furthermore, a low thermal expansion coefficient (15.3×10-6 K-1) is achieved, ensuring good thermomechanical compatibility the electrolyte. A peak power density of 860 mW cm-2 at 600°C is obtained from the corresponding PCFC, and the cell operates stably for 200 h without any significant degradation. The proposing strategy, by providing a new opportunity for the development of highly active and durable PCFC cathodes, may accelerate the practical use of this technology.

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Perovskite-type Nd0.5Sr0.5Co0.5Fe0.5O3-δ as a novel cathode material for intermediate-temperate solid oxide fuel cell

Cited by 16 publications

References 45 publications

Evaluation of La_xSr_1−xZn_yFe_1−yO_3−δ(x= 0.54, 0.8,y= 0.2, 0.4) as a promising cobalt free composite cathode for SOFCs

Evaluation of La_xSr_1−xZn_yFe_1−yO_3−δ(x= 0.54, 0.8,y= 0.2, 0.4) as a promising cobalt free composite cathode for SOFCs

Lattice Expansion and Crystallite Size Analyses of NiO-BaCe0.54Zr0.36Y0.1O3-δ Anode Composite for Proton Ceramic Fuel Cells Application

Nickel Doping Manipulation towards Developing High-Performance Cathode for Proton Ceramic Fuel Cells

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Perovskite-type Nd0.5Sr0.5Co0.5Fe0.5O3-δ as a novel cathode material for intermediate-temperate solid oxide fuel cell

Cited by 16 publications

References 45 publications

Evaluation of LaxSr1−xZnyFe1−yO3−δ(x= 0.54, 0.8,y= 0.2, 0.4) as a promising cobalt free composite cathode for SOFCs

Evaluation of LaxSr1−xZnyFe1−yO3−δ(x= 0.54, 0.8,y= 0.2, 0.4) as a promising cobalt free composite cathode for SOFCs

Lattice Expansion and Crystallite Size Analyses of NiO-BaCe0.54Zr0.36Y0.1O3-δ Anode Composite for Proton Ceramic Fuel Cells Application

Nickel Doping Manipulation towards Developing High-Performance Cathode for Proton Ceramic Fuel Cells

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Evaluation of La_xSr_1−xZn_yFe_1−yO_3−δ(x= 0.54, 0.8,y= 0.2, 0.4) as a promising cobalt free composite cathode for SOFCs

Evaluation of La_xSr_1−xZn_yFe_1−yO_3−δ(x= 0.54, 0.8,y= 0.2, 0.4) as a promising cobalt free composite cathode for SOFCs