|About this Abstract
||Materials Science & Technology 2019
||Nanotechnology for Energy, Environment, Electronics, Healthcare and Industry
||Synthesis, Characterization, and Catalytic Activity of Bismuth Ruthenium Oxide Nanoparticles for Oxygen Evolution and Reduction
||Chinami Iketani, Shohei Yamaguchi, Kenji Kawaguchi, Masatsugu Morimitsu
|On-Site Speaker (Planned)
This paper presents synthesis and evaluation of bismuth ruthenium oxide nanoparticles as the catalyst for OER and ORR. This pyrochlore oxide was prepared by co-precipitation and calcination method, in which the precipitates obtained by adding alkaline aqueous solutions into metal solutions containing a dispersing agent was calcined at 600 <sup>o</sup>C or less. XRD, SEM, and EDX revealed that the oxide was Bi<sub>1.87</sub>Ru<sub>2</sub>O<sub>6.903</sub> and the particle size ranged mostly from 10 nm to 20 nm. The catalytic activities for OER and ORR were measured by titanium disk method (TDM), in which the oxide nanoparticles were loaded on a titanium disk without binders and the oxide loaded titanium disk was used in rotating disk electrode equipment. The high catalytic activities for OER and ORR were demonstrated by polarization measurements and the Tafel slope was ca. 40 mV/dec that is lower than those of other types of composite oxides such as perovskite oxides.
||Planned: At-meeting proceedings