Enhanced electrochemical activity and long-term stability of Ni–YSZ anode derived from NiO–YSZ interdispersed composite particles

Sato, Kazuyoshi; Abe, Hiroya; Misono, Teruhiko; Murata, Kenji; Fukui, Takehisa; Naito, Makio

doi:10.1016/j.jeurceramsoc.2008.07.050

Cited by 36 publications

(3 citation statements)

References 24 publications

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“…To the best of our knowledge, there are really many researchers focusing on the study of operating stability of the Ni/YSZ anode and/or the redox stability of the Ni/NiO. [8][9][10][11] According to them, the Ni particle growth can take place through different mechanisms: evaporation-condensation, surface diffusion, grain boundary or volume (bulk) diffusion. 5,12,13 And the sintering mechanisms were found to depend on many process factors, such as, sintering temperature, sintering time, surface energy and interfacial adhesion.…”

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confidence: 99%

Effects of Initial Reduction Temperature on the Microstructures and Performances of Ni/YSZ Anodes for Solid Oxide Fuel Cells

Zhu

Guan

Lü

et al. 2013

J. Electrochem. Soc.

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This work focuses on the effects of the reducing and sintering behavior for NiO→Ni on the microstructures and performances of conventional Ni/YSZ (YSZ: yttria-stabilized zirconia) anodes for anode-supported solid oxide fuel cells (SOFCs). A strong dependence of reducing and sintering behavior on the initial reduction temperature for NiO→Ni was demonstrated. Some identical NiO/YSZ anodes were heated from room temperature (RT) to 850°C with a heating rate of 10°C/min. and the reducing gas H2 was provided at different temperatures, such as, RT, 600, 650 or 700°C. As a result of initial reduction temperature, the reducing process was found to obviously affect the specific surface areas (BET test), microstructures (SEM test), conductivities (conductivity test) and electrochemical performances (power output and polarization resistance) of reduced Ni/YSZ anode. A model was finally proposed to simulate the reducing and sintering mechanism and combined effects for NiO/YSZ→Ni/YSZ anodes at different initial reduction temperatures.

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mentioning

confidence: 99%

Effects of Initial Reduction Temperature on the Microstructures and Performances of Ni/YSZ Anodes for Solid Oxide Fuel Cells

Zhu

Guan

Lü

et al. 2013

J. Electrochem. Soc.

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“…The application of particle bonding process for the fuel cell development has been focusing on making composite particles to reduce its production costs and increase the long-term stability of cells and stacks by lowering its operation temperature without losing power density. For controlling the microstructure of composite electrodes, various kinds of composite particles such as large core-particles coated with nanoparticles (Fukui et al, 2004;Hagiwara et al, 2006;Misono et al, 2006) and interdispersed composite mixture consisting of several kinds of nanoparticles (Sato et al, 2009) have been successfully fabricated using the particle bonding process.…”

Section: Development Of Fuel Cell Electrodesmentioning

confidence: 99%

“…6 shows NiO-YSZ inter-dispersed composite particles consisting of NiO and YSZ nanoparticles processed by particle bonding process (Sato et al, 2009). after the reduction operation, and after the long-term stability test at 700 °C for 920 h (Sato et al, 2009). Before the reduction operation, the grain size of the anode was smaller than 1 μm without unusually large ones.…”

Section: Development Of Fuel Cell Electrodesmentioning

confidence: 99%

Smart Powder Processing for Excellent Advanced Materials and Its Applications

Naito

Kozawa

Kondô

et al. 2023

KONA

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Advances in Inkjet‐Printed Solid Oxide Fuel Cells

Zouridi

Garagounis

Vourros

et al. 2022

Adv Materials Technologies

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With energy demands increasing globally, [1] the prevention of an upcoming energy crisis has been established as a crucial challenge of our era. [2] While fossil fuels still constitute the primary Solid oxide fuel cells (SOFCs) are high temperature galvanic devices able to electrochemically convert chemical energy of fuels to electrical energy at remarkably high efficiencies. However, several challenges, associated with the complexity, scalability, and cost of the current fabrication processes, remain to be resolved for their large-scale deployment. Additive Manufacturing (AM) methods are proposed to address such fabrication-related issues, with Inkjet Printing (IJP) being one of the most promising. In this review, the use of IJP is examined as a potential AM method to deposit electrode and electrolyte thin films for SOFCs. The most important aspects of IJP for SOFCs fabrication processes, including ink formulation of active materials, inkjet deposition, printing optimization, and characterization of inkjet-printed thin films, are described in detail. Additionally, the effect on electrochemical performance of inkjet-printed SOFCs highlights the overall potential of this fabrication technique. Challenges and opportunities for the future development of the topic are also discussed.

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Enhanced electrochemical activity and long-term stability of Ni–YSZ anode derived from NiO–YSZ interdispersed composite particles

Cited by 36 publications

References 24 publications

Effects of Initial Reduction Temperature on the Microstructures and Performances of Ni/YSZ Anodes for Solid Oxide Fuel Cells

Effects of Initial Reduction Temperature on the Microstructures and Performances of Ni/YSZ Anodes for Solid Oxide Fuel Cells

Smart Powder Processing for Excellent Advanced Materials and Its Applications

Advances in Inkjet‐Printed Solid Oxide Fuel Cells

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