|
|
| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Exhibition Hall 2 |
| Time |
4월 19일 (금요일) 11:00~12:30 |
| Code |
MAT.P-405 |
| Subject |
N-doped carbon blacks by two step heating as a metal free catalysts for oxygren reduction reaction. |
| Authors |
Sunghee Park, Sungjin Park*, Yunseok Shin
Department of Chemistry, Inha University, Korea
|
| Abstract |
Two step heated carbon black is a excellent electrochemical oxygen reduction reactions (ORRs) catalysts, in terms of efficient, durable, and cost-effective catalysts. In this regard, the development of metal-free catalysts with excellent activity is essential. Herein we report the development of a novel two-step heating route to produce metal-free N-doped carbon blacks. The prepared materials exhibit superior electrocatalytic performance for ORRs in a basic media, which is comparable to commercial Pt/C catalysts. Among the various heating temperatures tested, sequential two-step heating at 750 and 1000 °C produced the most efficient catalysts with onset and half-wave potentials of 0.97 and 0.82 V, respectively. The prepared materials show excellent selectivity for 4-electron transfer, durability, and stability in response to methanol poisoning. Control experiments with one-step heating and no N-doping confirm the superiority of the two-step heating process for producing efficient electrocatalysts. |
| E-mail |
sunghui0928@gmail.com |
|
123rd General Meeting of the KCS