| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
A Novel Bi-functional Oxygen Catalyst, NBRO, for Rechargeable Air Battery: Preparation, Characterization, and Catalytic Activity |
| Author(s) |
Hayato Suzuki, Kentaro Kozasa, Masatsugu Morimitsu |
| On-Site Speaker (Planned) |
Masatsugu Morimitsu |
| Abstract Scope |
This paper presents a novel oxygen catalyst consisting of sodium, bismuth, and ruthenium oxide for the bi-functional air electrode of rechargeable air batteries (RAB). The oxide was prepared by precipitation and calcination of the metal hydroxide precursor obtained by adding NaOH into the metal salts solution. Characterization by XRD, RBS, ICP-AES, and SEM revealed that the oxide’s structure resembled bismuth ruthenium oxide (BRO) except that sodium is involved and located at near A-site which is occupied by Bi in BRO. The catalytic activities to OER and ORR were examined by titanium disk method (TDM) or with the air electrode using the oxide, and the results indicated that OER and ORR occurred with a low overpotential less than 300 mV and the air electrode worked well over 3000 cycles with no significant change in the potentials of oxygen evolution and reduction. |