A5002818821- Advancements in Solid Oxide Fuel Cells
- Icing and De-icing Technologies
- Electrocatalysts for Energy Conversion
- Surface Modification and Superhydrophobicity
- Fuel Cells and Related Materials
- Heat Transfer and Optimization
- Nanomaterials and Printing Technologies
- Electrochemical Analysis and Applications
- Additive Manufacturing and 3D Printing Technologies
- Image Processing Techniques and Applications
- Analytical Chemistry and Sensors
- ZnO doping and properties
- Magnetic and transport properties of perovskites and related materials
- Aerodynamics and Fluid Dynamics Research
- Gas Sensing Nanomaterials and Sensors
- Laser Material Processing Techniques
- Landslides and related hazards
- Electronic and Structural Properties of Oxides
- Computer Graphics and Visualization Techniques
- Fluid Dynamics and Thin Films
- Cryospheric studies and observations
- Hydrogen embrittlement and corrosion behaviors in metals
- Machine Learning in Materials Science
- Thermography and Photoacoustic Techniques
The University of Tokyo
2021-2024
Nickel (Ni) film on patterned Ni- yttria-stabilized zirconia (YSZ) anode shows dynamic spreading and splitting during solid oxide fuel cell (SOFC) operation, where wettability of Ni YSZ is greatly enhanced (Z. Jiao, N. Shikazono, J. Power Sources 396 119–123, 2018). In the present study, a physics-informed neural network (PINN) constrained by Cahn-Hilliard equation phase field model proposed to estimate unknown parameters for predicting movements Ni-YSZ anode. The such as interface thickness...
This study introduces an innovative photolithography-based method for patterning ionic and inorganic particle materials such as silver iodide (AgI). Conventional methods lack precision when powdered materials, which limits their applicability. The proposed stacks layers of a material (AgI) negative-tone photoresist simultaneous ultraviolet exposure development, resulting in well-defined AgI patterns. sintering process successfully removed binders from the layer photoresist, yielding...
In-operando observations and electrochemical measurements of patterned nickel (Ni) film electrodes under both solid oxide fuel cell (SOFC) electrolysis (SOEC) operations are conducted. Confocal laser scanning microscopy (CLSM) is applied to acquire the optical images Ni polarization study mobility on yttria-stabilized zirconia (YSZ) surface. The dynamically spreads breaks up only SOFC operation, while such a phenomenon not observed during SOEC operation. coarsening occurs regardless...
In the present study, Ni-M (M = Fe, Cu) bimetallic fuel electrodes are applied to investigate effects of transition metal elements on nickel (Ni) migration and Ni coarsening under SOFC SOEC operations. Ni-Fe, Ni-Cu pure patterned sputtered YSZ pellets. The electrochemical performance these lower than electrode, while degradation rate Ni-Fe is smaller others. spreading film surface observed for all samples anodic polarization, such suppressed by Fe doping, whereas it was enhanced Cu doping....
In the present study, electrochemical performance and microstructure evolutions of Ni-M (M = Fe, Cu, Mn) bimetallic fuel electrodes were investigated under SOFC SOEC operations. Ni-Fe, Ni-Mn, Ni-Cu pure Ni patterned sputtered on YSZ pellets. During tests, all lower than electrode, while degradation rates Ni-Fe Ni-Mn smaller others. The spreading film surface was observed for samples, such migration suppressed by Fe Mn addition, whereas it enhanced Cu addition. cell degraded with but improved...
In order to investigate Nickel (Ni) movements during operation, in-operando observation of Ni-pattern electrode is conducted with confocal laser microscope. In-operando observations have limitation quantitative analysis due the low resolution this study, two machine learning algorithms for super resolving microscope images are proposed. Firstly, semantic segmentation algorithm based on convolutional neural network (CNN) introduced automatic material identification. U-net architecture...
Solid oxide cells (SOCs), both solid fuel cell (SOFC) and electrolysis (SOEC), have being attracting more attention due to its high energy conversion efficiency flexibility. However, degradation of electrodes after long-term operation remains as one the main challenges for their commercial application. In particular, migration coarsening nickel (Ni) in Ni - yttria-stabilized zirconia (Ni-YSZ) strong impacts on decreases active three-phase boundary (TPB) network connectivity, which result...
Solid oxide cells (SOCs), both solid fuel cell (SOFC) and electrolysis (SOEC), have emerged attracted more attentions due to its high energy conversion efficiency flexibility. However, degradation of electrodes after long-term operation remains as one the main challenges for their commercial application. Two major types microstructure evolution, nickel (Ni) migration Ni coarsening in - yttria-stabilized zirconia (Ni-YSZ) been widely reported, which strong impacts on performance durability....
Nickel (Ni) is widely used for solid oxide fuel cell (SOFC) anodes due to high catalytic activity and electron conductivity. However, Ni coarsening depletion are the major causes of electrode degradation during long time operation. In order investigate microstructural changes under actual operating environment, in-operando observations Ni-pattern electrodes were carried using confocal laser microscope [1,2]. low resolution shallow depth field limit detailed investigation microstructure. On...