Synthesis and characterization of NiO-YSZ for SOFCs

Martins, Renata Figueredo; Brant, Márcia Caldeira; Domingues, Rosana Zacarias; Paniago, R.; Sapag, Karim; Matencio, Túlio

doi:10.1016/j.materresbull.2008.04.017

Cited by 31 publications

(15 citation statements)

References 32 publications

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“…The first effect has rather weak temperature dependence, the second a rather pronounced one [25]. The frequency independent of dielectric constant indicates the presence of the random diffusion of charge carriers via activated hopping [25]. However, the frequency dependency indicates the presence of a non-random process, where the ions perform correlated forward-backward motion.…”

Section: Dielectric Behaviormentioning

confidence: 98%

“…At high frequency, dielectric constant just results from the electron displacement polarization [24]. The first effect has rather weak temperature dependence, the second a rather pronounced one [25]. The frequency independent of dielectric constant indicates the presence of the random diffusion of charge carriers via activated hopping [25].…”

Section: Dielectric Behaviormentioning

confidence: 99%

“…This onset of constant K and tan δ normally started from 10 5 Hz where we have assigned the contribution of electron displacement polarization [24]. A diversified effort has been made to understand the conduction mechanism in SOFC using different characterization techniques [25]. One of the strategies for understanding the electrode performance is to know the charge transport mechanism with the temperature and frequency [25].…”

Section: Development Of Ni-doped Yttria Stabilized Zirconia Compositementioning

confidence: 99%

“…One of the strategies for understanding the electrode performance is to know the charge transport mechanism with the temperature and frequency [25]. The study of the frequency and temperature dependency of dielectric constant may provide an opportunity to understand the details of electronic/ionic migration mechanism [25]. …”

Section: Development Of Ni-doped Yttria Stabilized Zirconia Compositementioning

confidence: 99%

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Development of Ni-doped Yttria stabilized Zirconia composite for SOFC applications as Anodic material

Mohanta¹,

Das²,

Roul³

2017

IOSR JAP

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Section: Dielectric Behaviormentioning

confidence: 98%

Section: Dielectric Behaviormentioning

confidence: 99%

Section: Development Of Ni-doped Yttria Stabilized Zirconia Compositementioning

confidence: 99%

Section: Development Of Ni-doped Yttria Stabilized Zirconia Compositementioning

confidence: 99%

See 2 more Smart Citations

Development of Ni-doped Yttria stabilized Zirconia composite for SOFC applications as Anodic material

Mohanta¹,

Das²,

Roul³

2017

IOSR JAP

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show abstract

“…Under the pressure of exhausting conventional fossil fuels and exploring safe renewable energy, solid oxide fuel cell (SOFC) keeps attracting extensive attention compared with various other types of power sources due to its high conversion efficiency, low environmental pollution and high flexibility to various fuels [1][2][3]. The advantages of direct-methane solid oxide fuel cells (SOFC) are high energy efficiency and relatively simple system design, which is a promising candidate for stationary power generation.…”

Section: Introductionmentioning

confidence: 99%

A robust NiO–Sm0.2Ce0.8O1.9 anode for direct-methane solid oxide fuel cell

Tian

Liu

Chen

et al. 2015

Materials Research Bulletin

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A robust NiO-Sm0.2Ce0.8O1.9 anode for direct-methane solid oxide fuel cell, Materials Research Bulletin http://dx.doi.org/10. 1016/j.materresbull.2015.06.042 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Graphical abstractHighlights  Robust NiO-SDC anode is synthesized by co-assembly for direct-methane SOFC. The cell performance was improved by 40%-45% with the new NiO-SDC anode. No significant degradation of the cell performance was observed after 60 hours. The double-pore NiO-SDC anode with higher TPB is promising for SOFC. AbstractIn order to directly use methane without a reforming process, NiO-Sm 0.2 Ce 0.8 O 1.9 (NiO-SDC) nanocomposite anode are successfully synthesized via a one-pot, surfactant-assisted co-assembly approach for direct-methane solid oxide fuel cells.Both NiO with cubic phase and SDC with fluorite phase are obtained at 550°C. Both 2 NiO nanoparticles and SDC nanoparticles are highly monodispersed in size with nearly spherical shapes. Based on the as-synthesized NiO-SDC, two kinds of single cells with different micro/macro-porous structure are successfully fabricated. As a result, the cell performance was improved by 40%-45% with the new double-pore NiO-SDC anode relative to the cell performance with the conventional NiO-SDC anode due to a wider triple-phase-boundary (TPB) area. In addition, no significant degradation of the cell performance was observed after 60 hours, which means an increasing of long term stability. Therefore, the as-synthesized NiO-SDC nanocomposite is a promising anode for direct-methane solid oxide fuel cells.

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Electrochemical Performance of a Ni and YSZ Composite Synthesised by Ultrasonic Spray Pyrolysis as an Anode for SOFCs

et al. 2011

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The electrochemical performance of an anode material for a solid oxide fuel cell (SOFC) depends highly on microstructure in addition to composition. In this study, a NiO–yttria‐stabilised zirconia (NiO–YSZ) composite with a highly dispersed microstructure and large pore volume/surface area has been synthesised by ultrasonic spray pyrolysis (USP) and its electrochemical characteristics has been investigated. For comparison, the electrochemical performance of a conventional NiO–YSZ is also evaluated. The power density of the zirconia electrolyte‐supported SOFC with the synthesised anode is ∼392 mW cm–2 at 900 °C and that of the SOFC with the conventional NiO–YSZ anode is ∼315 mW cm–2. The improvement is ∼24%. This result demonstrates that the synthesised NiO–YSZ is a potential alternative anode material for SOFCs fabricated with a zirconia solid electrolyte.

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Synthesis and characterization of NiO-YSZ for SOFCs

Cited by 31 publications

References 32 publications

Development of Ni-doped Yttria stabilized Zirconia composite for SOFC applications as Anodic material

Development of Ni-doped Yttria stabilized Zirconia composite for SOFC applications as Anodic material

A robust NiO–Sm0.2Ce0.8O1.9 anode for direct-methane solid oxide fuel cell

Electrochemical Performance of a Ni and YSZ Composite Synthesised by Ultrasonic Spray Pyrolysis as an Anode for SOFCs

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