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|
| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Exhibition Hall 2+3 |
| Time |
10월 19일 (목요일) 11:00~12:30 |
| Code |
MAT.P-392 |
| Subject |
A Critical Role of 2D Metal Oxide Nanosheets as Additives for Improving the Electrocatalytic Performance of Graphene |
| Authors |
Xiaoyan Jin, Seong-Ju Hwang*
Center for Hybrid Interfacial Chemical Structure (CICS), Department of Chemistry and Nanoscience, Ewha Womans University, Korea
|
| Abstract |
High performance Pt-free electrocatalyst can be synthesized by an addition of small amount of exfoliated metal oxide (CoO2/Ti1-xO2/RuO2) nanosheet into graphene suspension. The incorporation of metal oxide nanosheet is effective in increasing the surface area and pyridinic N content of N-doped graphene and also in decreasing its charge transfer resistance. Even at low content of metal oxide nanosheets (<4wt%), the obtained N-doped graphene-metal oxide materials exhibit much higher electrocatalyst activity for oxygen reduction reaction than does N-doped graphene. Such a crucial effect of metal oxide nanosheet is much more prominent than that of metal oxide nanoparticle, underscoring unique merit of 2D nanosheet morphology. The present study clearly demonstrates that metal oxide 2D nanosheets can act as powerful additives for optimizing the electrocatalyst activity of graphene. |
| E-mail |
jinxiaoyan313@hotmail.com |
120th General Meeting of the KCS