About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage VII
|
Presentation Title |
AgCl-decorated Ag Nanowire Catalysts to Maximize the Surface Effect
in the Oxygen Reduction Reaction
|
Author(s) |
Suyeon Choi, Youngtae Park, Changsoo Lee, Hyuck Mo Lee |
On-Site Speaker (Planned) |
Suyeon Choi |
Abstract Scope |
Pt-based catalysts are suffering from the intrinsic high cost and poor stability for practical use in anion exchange membrane fuel cells (AEMFCs). We developed AgCl-decorated Ag nanowires (AgNWs) to replace Pt-based catalysts using a polyol and precipitation method. Its morphology was studied by energy dispersive spectrometry (EDS) and scanning electron microscope (SEM). Moreover, we wanted to confirm the effect of the large surface area of this bumpy AgCl-decorated AgNWs by comparing it to a catalyst with flat surface. This flat catalyst is synthesized using a galvanic reaction with Cl and the relative surface area was calculated using double layer capacitance (DLC) measurement. Electrochemical measurements showed that catalysts have a higher on-set potential and half-wave potential in the order of AgCl-decorated AgNWs, galvanic AgNWs, and AgNWs. We suggest that AgCl-decorated AgNWs can be used as catalysts in the industry of AEMFCs due to the simple synthesis process and low cost. |
Proceedings Inclusion? |
Planned: |