H
Hiromichi Arai
Researcher at Kyushu University
Publications - 159
Citations - 8185
Hiromichi Arai is an academic researcher from Kyushu University. The author has contributed to research in topics: Catalysis & Oxide. The author has an hindex of 43, co-authored 159 publications receiving 7828 citations. Previous affiliations of Hiromichi Arai include Nagasaki University.
Papers
More filters
Journal ArticleDOI
Electrical properties of ceria-based oxides and their application to solid oxide fuel cells
TL;DR: In this article, the ionic conductivities of samaria-doped ceria-alkaline-earth and rare-earth oxide systems were investigated in relation to their structures, electrical conductivities, and reducibilities.
Journal ArticleDOI
High‐temperature thermoelectric properties of (Zn1−xAlx)O
TL;DR: In this paper, a mixed oxide (Zn1−x Al x )O exhibits promising thermoelectric properties attaining a dimensionless figure of merit ZT of 0.30 at 1000°C, which value is much superior to other oxides and quite comparable to conventional state-of-the-art thermolectricmaterials.
Journal ArticleDOI
Catalytic combustion of methane over various perovskite-type oxides
TL;DR: In this paper, catalytic oxidation of methane was carried out over various perovskite-type oxides and compared with Pt/alumina catalyst at a conversion level below 80%.
Journal ArticleDOI
Thermoelectric properties of Al-doped ZnO as a promising oxide material for high-temperature thermoelectric conversion
TL;DR: The thermoelectric properties of a mixed oxide were investigated in terms of materials for high-temperature thermal conversion in this paper, showing metallic behavior and the electrical conductivity of the oxide increases on Al-doping by more than three orders of magnitude up to ca.
Journal ArticleDOI
Electrical properties and reducibilities of ceria−rare earth oxide systems and their application to solid oxide fuel cell
TL;DR: The electrical conductivities of rare earth oxides were investigated in fluorite lattice of ceria at low additive concentrations in this article, where the ionic radii of the added cation were investigated.