A5048748647- Advancements in Solid Oxide Fuel Cells
- Fuel Cells and Related Materials
- Electronic and Structural Properties of Oxides
- Electrocatalysts for Energy Conversion
- Catalysis and Oxidation Reactions
- Semiconductor materials and devices
- Magnetic and transport properties of perovskites and related materials
- Advancements in Semiconductor Devices and Circuit Design
- Catalytic Processes in Materials Science
- Chemical Looping and Thermochemical Processes
- Physics of Superconductivity and Magnetism
- Organic Electronics and Photovoltaics
- Advanced ceramic materials synthesis
- Heat Transfer and Optimization
- Advanced battery technologies research
- Flow Measurement and Analysis
- Thermal Expansion and Ionic Conductivity
- Magnetic properties of thin films
- GaN-based semiconductor devices and materials
- Refrigeration and Air Conditioning Technologies
- Conducting polymers and applications
- Silicon Carbide Semiconductor Technologies
- Organic Light-Emitting Diodes Research
- Advanced Sensor Technologies Research
- Heat Transfer and Boiling Studies
National Institute of Advanced Industrial Science and Technology
2016-2025
Seiko Holdings (Japan)
2001-2023
Sumitomo Electric Industries (United States)
2016-2018
Mie University
2017
Central Research Institute of Electric Power Industry
2017
Nagoya University
2017
University of Connecticut
2015
Suzuki (Japan)
2015
Tsinghua University
2015
Institute of Nuclear Energy Research
2015
Abstract Solid oxide electrolysis cells can theoretically achieve high energy-conversion efficiency, but current density must be further increased to improve the hydrogen production rate, which is essential realize widespread application. Here, we report a structure technology for solid higher than 3 A cm −2 , exceeds that of state-of-the-art electrolyzers. Bimodal-structured nanocomposite oxygen electrodes are developed where nanometer-scale Sm 0.5 Sr CoO 3−δ and Ce 0.8 0.2 O 1.9 highly...
Abstract Solid oxide fuel cells (SOFCs) are power-generating devices with high efficiencies and considered as promising alternatives to mitigate energy environmental issues associated fossil technologies. Nanoengineering of electrodes utilized for SOFCs has emerged a versatile tool significantly enhancing the electrochemical performance but needs overcome integration into practical suitable widespread application. Here, we report an innovative concept high-performance thin-film cathodes...
Abstract Protonic ceramic fuel cells (PCFCs) are expected to achieve high power generation efficiency at intermediate temperature around 400–600 °C. In the present work, distribution of relaxation times (DRT) analysis was investigated in order deconvolute anode and cathode polarization resistances for PCFCs supported on yttria-doped barium cerate (BCY) electrolyte comparison with solid oxide (SOFCs) scandia-stabilized zirconia (ScSZ) electrolyte. Four DRT peaks were detected from impedance...
Gd-doped ceria (GDC) and Yb-doped barium zirconate (BZYb) are used as electrolytes for intermediate-temperature solid oxide cells (SOCs) protonic ceramic (PCCs), respectively. However, the electron conductivity of GDC under low oxygen partial pressure hole BZYb high result in current leakage, which decreases open circuit voltage conversion efficiency. In present work, effect polarization resistances on leakage is investigated through distribution relaxation times (DRT) analysis...
The present work investigates electrochemical performance of anode-supported protonic ceramic fuel cells (PCFCs) with composite cathodes consisting an electronic conductive perovskite oxide and a BaZr0.1Ce0.7Y0.1Yb0.1O3–δ (BZCYYb). Although PCFCs are expected as future high-efficiency device, further higher reliability essential. Thus, to enhance cathode performance, three conventional oxides, La0.6Sr0.4Co0.2Fe0.8O3–δ (LSCF), La0.6Sr0.4CoO3–δ (LSC), La0.6Ba0.4CoO3–δ (LBC), that commonly used...
A novel process to fabricate dense ceramic bulk of BaZrO3 perovskite oxide without firing was established. Although, conventionally requires a sintering temperature 1600 °C for densification, relative density 90% can be obtained via an acid-base chemical densification (ABCD) at 150 °C. In this process, body is fabricated through the acid–base reaction between precursor compact and alkaline solution temperatures ranging from room ABCD reduce energy consumption CO2 emission comparing...
Protonic ceramic fuel cells (PCFCs) should exhibit high performance at intermediate temperatures in the range of 400–600 °C. To reduce operating temperature, more active air electrodes (positrodes) are needed. In present work, BaCo0.4Fe0.4Mg0.1Y0.1O3-δ (BCFMY) is investigated as a positrode material for application PCFCs well solid oxide (SOFCs). For SOFCs, polarization resistance ascribed to oxygen reduction reaction proportional pO2−1/4 (pO2: partial pressure), suggesting that...
Electrochemical performance and feasibility of proton-conducting solid oxide fuel cells (SOFCs) using methane (CH4) were investigated. At high utilization, higher protonic transport number electrolytes enables open-circuit voltage (OCV) when hydrogen (H2) is the fuel. In contrast, a ionic needed CH4 Conductivities each charge carrier an yttrium-doped barium zirconate (BZY) electrolyte therefore estimated by measuring OCV under various partial pressures. A dense BZY was obtained addition 0.6...
Although protonic ceramic fuel cells (PCFCs) have a great potential to realize higher energy-conversion efficiency compared with all other conventional devices, actual PCFCs shown current leakage loss due their intrinsic transport property electron-hole conduction of proton-conducting electrolytes, resulting in decrease efficiency. The present study shows new finding that open-circuit voltage (OCV), which is an indicator loss, depends on the ratio electrode polarization resistance...
The phase transitions, thermal expansions, chemical and CO 2 resistances of Ba(Ce 0.7 Zr 0.1 Y Yb )O 3- δ (BCZYYb7111) 0.4 (BCZYYb4411) have been investigated via high-temperature X-ray diffraction in controlled atmospheres (dry N , wet dry 33.3 vol% − 66.6 ) on cooling from 1173 to 298 K. Two transitions (cubic ( Pm <?CDATA $\bar{3}\,$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mover accent="true"> <mml:mn>3</mml:mn> <mml:mo>¯</mml:mo> </mml:mover>...