NdBaMn2O5+δ layered perovskite as an active cathode material for solid oxide fuel cells

Abdalla, Abdalla M.; Hossain, Shahzad; Zhou, Jun; Petra, Pg M.I.; Erikson, Stene; Savaniu, Cristian; Irvine, John T. S.; Azad, Abul K.

doi:10.1016/j.ceramint.2017.08.170

Cited by 21 publications

(6 citation statements)

References 54 publications

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“…is layered perovskite is challenging to develop in a pure form, but the single-phase was obtained. Our synthesis method was also different from the method used to obtain NdBaMn 2 O 5+δ [40] but similar to the synthesis process for PrSrMn 2 O 5+δ [30]. Figure 1 shows the XRD pattern for NdSrMn 2 O 5+δ sintered at 1400 °C under Ar atmosphere.…”

Section: Resultsmentioning

confidence: 99%

Investigation of Structural and Thermal Evolution in Novel Layered Perovskite NdSrMn2O5+δ via Neutron Powder Diffraction and Thermogravimetric Analysis

Afroze

Reza

Henry

et al. 2020

International Journal of Chemical Engineering

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Neutron diffraction is one of the best methods for structural analysis of a complex, layered perovskite material with low symmetry by accurately detecting the oxygen positions through octahedral tilting. In this research, the crystal structure of NdSrMn2O5+δ was identified through X-ray diffraction (XRD) and neutron powder diffraction (NPD) at room temperature (RT), which indicated the formation of a layered structure in orthorhombic symmetry in the Pmmm (no. 47) space group. Rietveld refinement of the neutron diffraction data has confirmed the orthorhombic symmetry with unit cell parameters (a = 3.8367 (1) Å, b = 3.8643 (2) Å, and c = 7.7126 (1) Å), atomic positions, and oxygen occupancy. Thermogravimetric analysis revealed the total weight loss of about 0.10% for 20–950°C temperature, which occurred mainly to create oxygen vacancies at high temperatures. Rietveld analyses concurred with the XRD and neutron data allowing correlation of occupancy factors of the oxygen sites.

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Section: Resultsmentioning

confidence: 99%

Investigation of Structural and Thermal Evolution in Novel Layered Perovskite NdSrMn2O5+δ via Neutron Powder Diffraction and Thermogravimetric Analysis

Afroze

Reza

Henry

et al. 2020

International Journal of Chemical Engineering

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“…Among all types of the fuel cells, SOFC gives relatively very high efficiency, fuel flexibility (CH4, H2, biogas) [7] and very low emissions as it is an alternate of energy sources, for instance, solar cells, wind energy, etc. [22], [23]. SOFC offers more than 60% efficiency with a clean environment [24].…”

Section: Fig 1 -Protection and Prevention From Covid-19mentioning

confidence: 99%

Solid Oxide Fuel Cell (SOFC); A New Approach of Energy Generation during the Pandemic COVID-19

Afroze¹,

Reza²,

Cheok³

et al. 2020

IJIE

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The new coronavirus (COVID-19) has started spreading all over the world. Every infected is fighting to recover a little and every health worker is fighting to save a single life in this pandemic. There is no place for patients to stay in the hospital, health workers are given all possible services to save their lives. In this situation, uninterrupted power system is needed, which can be supplied by solid oxide fuel cells (SOFCs). Therefore, solid oxide fuel cells (SOFCs) are becoming attractive day by day with competing environmentally friendly energy sources due to high energy efficiency, low emission rate and comparatively low operating cost. The purpose of this work is to investigate how copper-doped perovskite electrode materials impact the performance of solid oxide fuel cells (SOFCs) to overcome such crucial times successfully. Different synthesis process of Cu-based electrodes and analyzing electrochemical properties were investigated in this work. The evaluation was performed in terms of synthesis process, sintering temperature, lattice type and parameters, electrical conductivity, thermal expansion coefficients (TEC), polarization resistance, activation energy, and power density. In order to provide additional energy during this pandemic COVID-19, low-cost, highly performed, and durable materials are needed to make SOFC.

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“…From the density calculations, from both experimental and theoretical [44], it is clear that there is a very strong relation between the porosity and amount of Zr added to SmFeO 3 . As shown in Table 3 in the samples with higher amount of Zr the lower density was obtained.…”

Section: Microstructural Studymentioning

confidence: 99%

Effect of Zr addition on structure and electrical properties of SmFeO3 prepared by solid state reaction method

Abdalla

Hossain

Mohd

et al. 2017

PAC

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Series of Sm1-xFe1-3xZr3xO3 (SFZO, where x = 0.0, 0.01, 0.02, 0.033, 0.05, 0.1 and 0.15), was synthesised by the solid state reaction method and sintered at 1500?C in air. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to investigate the structure of the materials. The XRD results indicated that the pure SmFeO3 and Sm0.99Fe0.97Zr0.03O3 samples are single phase materials with an orthorhombic symmetry and Pbnm space group. The increase of Zr content (x ? 0.02) causes a phase change from single to twophase system with orthorhombic (Pbnm) and fluorite symmetry (Fm?3m). The microstructural analyses showed that the Zr4+ doping resulted in an increase of porosity in the sintered SFZO compared to SmFeO3 sample. The direct current (DC) electrical conductivity at 850?C in air was found to be 0.045 S/cm and 0.007 S/cm for Sm0.99Fe0.97Zr0.03O3 and SmFeO3, respectively, showing a significant enhancement compared to the pure SmFeO3.

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NdBaMn2O5+δ layered perovskite as an active cathode material for solid oxide fuel cells

Cited by 21 publications

References 54 publications

Investigation of Structural and Thermal Evolution in Novel Layered Perovskite NdSrMn2O5+δ via Neutron Powder Diffraction and Thermogravimetric Analysis

Investigation of Structural and Thermal Evolution in Novel Layered Perovskite NdSrMn2O5+δ via Neutron Powder Diffraction and Thermogravimetric Analysis

Solid Oxide Fuel Cell (SOFC); A New Approach of Energy Generation during the Pandemic COVID-19

Effect of Zr addition on structure and electrical properties of SmFeO3 prepared by solid state reaction method

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