|
Type |
Poster Presentation |
Area |
Material Chemistry |
Room No. |
Exhibition Hall 2 |
Time |
4월 19일 (금요일) 11:00~12:30 |
Code |
MAT.P-407 |
Subject |
Uniformly-dispersed Pt nanoparticles on borane-modified graphene oxide as electrocatalyst for oxygen reduction reaction |
Authors |
Sujin Seok*, Haeju Kim, Sungjin Park Department of Chemistry, Inha University, Korea |
Abstract |
The oxygen reduction reaction (ORR) at cathode is critical in the electrochemical energy conversion systems, such as fuel cells and metal-air batteries. ORR at the cathode during redox reactions is sluggish reaction so then requires effective electrocatalysts to overcome the high activation energy. Pt/C catalysts have been known the best catalytic activity because of the superior catalytic ability of Pt particles. However, it is still a challenge to synthesis efficient ORR catalysts containing Pt species by solution processes at low temperatures. In this work, we report a new route for producing hybrids ORR catalyst consist of well-dispersed Pt nanoparticles of uniform size on the surface of borane-reduced graphene oxide (BG) using a low-temperature solution process. The Pt particles have 10–15 nm size-distribution and are well-dispersed on the surface of BG without agglomeration. The Pt-BG hybrid catalysts exhibit excellent electrocatalytic activity with high onset and half-wave potentials of 0.99 and 0.84V respectively. When compared with Pt/C and previously reported Pt-based catalysts, the hybrids are comparable to those catalyst and also show excellent four-electron selectivity and superior kinetics. |
E-mail |
sujins7880@gmail.com |
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