123rd General Meeting of the KCS

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