|
|
| Type |
Poster Presentation |
| Area |
Electrochemistry |
| Room No. |
Grand Ballroom |
| Time |
10월 19일 (금요일) 11:00~12:30 |
| Code |
ELEC.P-474 |
| Subject |
Shape-Controlled Palladium Hydride Nanocrystals as Electrocatalysts for Formic Acid Oxidation |
| Authors |
Mrinal kanti Kabiraz, Sang-Il Choi*
Department of Chemistry, Kyungpook National University, Korea
|
| Abstract |
The direct formic acid fuel cells (DFAFCs) are promising power source for portable devices, where Pd-based nanocatalysts are most active catalysts toward formic acid oxidation (FAO). Pd- nanocatalysts are more tolerant for CO poisoning, facilitating these catalysts durable over a longer period of reaction for FAO. We have synthesized about ~5 nm PdH cubic and octahedral nanoparticle. Compressive surface strain leading to a down-shift of d-band center observed in CO stripping and XAS measurements for the PdH cubic and octahedral nanocatalysts. PdH cube and octahedra nanocatalysts showed improved activity toward FAO compared with Pd cube, Pd octahedra and commercial Pd black catalyst. The Electrochemical impedance spectroscopy (EIS) measurements during FAO also showed significant improvement of conductivity for PdH cube and octahedra nanocatalysts. PdH cubic and octahedral nanocatalysts were more durable toward FAO operating at 0.4 VRHE than Pd cubic, octahedral, and Pd black nanoparticle. |
| E-mail |
mkraj25m@gmail.com |
|
122nd General Meeting of the KCS