Evaluation of BaZr0.8X0.2 (X= Y, Gd, Sm) proton conducting electrolytes sintered at low temperature for IT-SOFC synthesized by cost effective combustion method

Irshad, Muneeb; Ain, Qurat Ul; Siraj, K.; Raza, Rizwan; Tabish, Asif Nadeem; Rafique, Muhammad; Idrees, Raazia; Khan, Fiaz Gul; Majeed, Shahbaz; Ahsan, Muhammad

doi:10.1016/j.jallcom.2019.152389

Cited by 51 publications

(22 citation statements)

References 41 publications

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“…The optical bandgap of undoped ZnFe2O4 has already been published in the literature, i.e., 2.27 eV, which is smaller than the optical bandgap of obtained ZnFe2O4 in this study. The difference in optical bandgap could be attributed to the smaller crystallite size of sample [46]. However, with incorporation of Mn the bandgap was increased to 2.51 eV for ZF-2 and reduced to 2.13 eV for ZF-4.…”

Section: Ultraviolet-visible (Uv-vis) Spectroscopy Analysismentioning

confidence: 95%

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Structural, optical and electrical properties of Mn-doped ZnFe2O4 synthesized using sol–gel method

Cheema

Yadav

Maurya

et al. 2021

J Mater Sci: Mater Electron

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Samples with doping of Mn (0, 2, and 4%) in ZnFe2O4 were prepared by sol-gel chemical route at 80 o C. X-ray powder diffraction and Raman spectrum analysis were used to determine the preliminary phase of obtained samples. W-H and SSP plots were used to determine the crystallite size and micro-strain of samples. Using zeta potential and scanning electron microscope, the surface charge and morphology of the prepared samples were studied. The optical bandgap of sample suggested that it was semiconducting.The dielectric characteristics of samples were examined as a function of temperature at various frequencies (1 KHz, 10 KHz, 100 KHz, and 1 MHz) (60-600 o C). Dielectric study revealed the presence of interfacial and orientational polarization, with dielectric constants and dissipation factors ranging from (0.7-460) to (0.3-0.8), remain thermally stability up to 300 o C. In samples ZF-0, ZF-2, and ZF-4, the thermal dependence of DC conductivity demonstrates Arrhenius transport with one, two, and three regions of conduction, respectively. The sources of charge carrier in samples were ⋅⋅ , ′ and dipole defects ( ⋅⋅ − 2 2+ 3+ ′ ) and (2 3+ 2+ . − 2 2+ 3+ ′ ). The current work could help identify possible applications in semiconductor devices, thermally stable capacitors, and as mixed ionic electronic conductors in solid oxide fuel cells.

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Section: Ultraviolet-visible (Uv-vis) Spectroscopy Analysismentioning

confidence: 95%

“…In case of ZF-0, the sample has two kinds of defects are in majority such as ⋅⋅ and ′ that contributed in overall conductivity according to equation (11) [46]. The prepared materials (BZY, BZSm, and BZGd) were sintered at T=1150 °C shows maximum conductivity for BZY ≈ 2.2×10 -3 S/cm.…”

Section: Dielectric and Dissipation Factor Study Of Sintered Pelletsmentioning

confidence: 99%

Structural, optical and electrical properties of Mn-doped ZnFe2O4 synthesized using sol–gel method

Cheema

Yadav

Maurya

et al. 2021

J Mater Sci: Mater Electron

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“…The existence of BaO phase can be ascribed to low sintering temperature as researchers have reported that high sintering temperature can result in the volatilization of BaO. 1 It is also clear from the spectra that besides the NiO phase's appearance due to nickel, peak shiing also occurred for the samples doped with nickel. Fig.…”

Section: Surface Morphologymentioning

confidence: 93%

“…The extensive use of these energy resources is not only creating a negative impact on the environment by the emission of harmful gases but also causing their depletion at a rapid pace. 1,2 Researchers are devoting a lot of their efforts to develop highly efficient, cost-effective, and eco-environment-friendly alternative energy resources. Among different energy resources, fuel cells have the potential in fullling these requirements.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of BaCo₀.₄Fe₀.₄Zr_0.2−xNi_xO_3−δ perovskite cathode using nickel as a sintering aid for IT-SOFC

Irshad

Khalid

Rafique³

et al. 2021

RSC Adv.

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“…Nanostructure materials were fabricated to improve the grain boundary, which is prominently used for the applications of electrolytic materials in IT-SOFCs. Irshad et al [36] synthesized BaZr 0.8 X 0.2 O 3-δ (X = Y, Sm, Gd) proton conducting perovskite structure electrolyte material by combustion route. The prepared materials (BZY, BZSm, and BZGd) were sintered at T = 1150 °C.…”

Section: Sc 2 O 3 -Zro 2 (Scsz) and Bazr 08 X 02 (X = Y Gd Sm) Bmentioning

confidence: 99%

Review of solid oxide fuel cell materials: cathode, anode, and electrolyte

2020

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There is a growing interest in solid oxide fuel cells (SOFCs) technology among the researchers a promising power generation with high energy efficiency, inflated fuel flexibility, and low environmental impact compared to conventional power generation systems. SOFCs are devices in which the chemical energy is directly converted into electrical energy with negligible emission. SOFCs have low pollution characteristics, high efficiency (~ 60%), and possess expanded fuel selection with little environmental effects. A single cell component of SOFCs is consisting an anode, cathode and an electrolyte which are stacked layer by layer to produce higher amount of power. The dense ceramic electrolyte transporting O2− ions and fills the space between the electrodes material. Redox reaction occurred at the electrodes side in the presence of fuels. The operating temperatures of SOFCs of 600–1200 °C which produced heat as a byproduct and fast electro-catalytic activity while using nonprecious metals. Many ceramic materials have been investigated for SOFCs electrolyte. Yttria-stabilized zirconia (YSZ) material was extensively used as dense electrolyte in SOFCs technology. In this review, the article presents; overview of the SOFCs devices and their related materials and mostly reviewed newly available reported.

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Evaluation of BaZr0.8X0.2 (X= Y, Gd, Sm) proton conducting electrolytes sintered at low temperature for IT-SOFC synthesized by cost effective combustion method

Cited by 51 publications

References 41 publications

Structural, optical and electrical properties of Mn-doped ZnFe2O4 synthesized using sol–gel method

Structural, optical and electrical properties of Mn-doped ZnFe2O4 synthesized using sol–gel method

Evaluation of BaCo₀.₄Fe₀.₄Zr_0.2−xNi_xO_3−δ perovskite cathode using nickel as a sintering aid for IT-SOFC

Review of solid oxide fuel cell materials: cathode, anode, and electrolyte

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Evaluation of BaZr0.8X0.2 (X= Y, Gd, Sm) proton conducting electrolytes sintered at low temperature for IT-SOFC synthesized by cost effective combustion method

Cited by 51 publications

References 41 publications

Structural, optical and electrical properties of Mn-doped ZnFe2O4 synthesized using sol–gel method

Structural, optical and electrical properties of Mn-doped ZnFe2O4 synthesized using sol–gel method

Evaluation of BaCo0.4Fe0.4Zr0.2−xNixO3−δ perovskite cathode using nickel as a sintering aid for IT-SOFC

Review of solid oxide fuel cell materials: cathode, anode, and electrolyte

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Evaluation of BaCo₀.₄Fe₀.₄Zr_0.2−xNi_xO_3−δ perovskite cathode using nickel as a sintering aid for IT-SOFC