루테늄 산화물 나노 섬유 지지체에 담지된 고 분산성촉매의 전기화학적 거동
Electrochemical Behavior of Well-dispersed Catalysts on Ruthenium Oxide Nanofiber Supports
1
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
Well-dispersed platinum catalysts on ruthenium oxide nanofiber supports are fabricated using electrospinning, post-calcination, and reduction methods. To obtain the well-dispersed platinum catalysts, the surface of the nanofiber supports is modified using post-calcination. The structures, morphologies, crystal structures, chemical bonding energies, and electrochemical performance of the catalysts are investigated. The optimized catalysts show well-dispersed platinum nanoparticles (1-2 nm) on the nanofiber supports as well as a uniform network structure. In particular, the well-dispersed platinum catalysts on the ruthenium oxide nanofiber supports display excellent catalytic activity for oxygen reduction reactions with a half-wave potential (E1/2) of 0.57 V and outstanding long-term stability after 2000 cycles, resulting in a lower E1/2 potential degradation of 19 mV. The enhanced electrochemical performance for oxygen reduction reactions results from the well-dispersed platinum catalysts and unique nanofiber supports.
Abstract
Well-dispersed platinum catalysts on ruthenium oxide nanofiber supports are fabricated using electrospinning, post-calcination, and reduction methods. To obtain the well-dispersed platinum catalysts, the surface of the nanofiber supports is modified using post-calcination. The structures, morphologies, crystal structures, chemical bonding energies, and electrochemical performance of the catalysts are investigated. The optimized catalysts show well-dispersed platinum nanoparticles (1-2 nm) on the nanofiber supports as well as a uniform network structure. In particular, the well-dispersed platinum catalysts on the ruthenium oxide nanofiber supports display excellent catalytic activity for oxygen reduction reactions with a half-wave potential (E1/2) of 0.57 V and outstanding long-term stability after 2000 cycles, resulting in a lower E1/2 potential degradation of 19 mV. The enhanced electrochemical performance for oxygen reduction reactions results from the well-dispersed platinum catalysts and unique nanofiber supports.
참고문헌 (15)
- M. Lefèvre, , Science, 324, pp.71~ (2009)
- 안건형, "산소환원반응 촉매용 질소 도핑된 탄소나노섬유의 제조", 한국분말야금학회지, 23(6), pp.420~425 (2016), 한국분말야금학회
- 안건형, "Pt Electrocatalysts Composited on Electro-Spun Pt Nanowires for Direct Methanol Fuel Cells", 한국재료학회지, 22(8), pp.421~425 (2012), 한국재료학회[DOI]
- M. K. Jeon, , J. Power Sources, 216, pp.400~ (2012)
- K. Gong, , Science, 323, pp.760~ (2009)
- G. H. An, , J. Electroanal. Chem., 707, pp.74~ (2013)
- G. H. An, , J. Alloys Compd., 682, pp.746~ (2016)
- G. H. An, , Phys. Chem. Chem. Phys., 18, pp.14859~ (2016)
- 안건형, "이중 전기방사법을 이용하여 SnO2-Sn-Ag3Sn 나노 입자가 균일하게 내재된 탄소 나노섬유의 합성", 한국재료학회지, 23(2), pp.143~148 (2013), 한국재료학회[DOI]
- 신동요, "탄소나노섬유 모형을 이용한 천공된 다각형 코발트 산화물 합성", 한국분말야금학회지, 22(5), pp.350~355 (2015), 한국분말야금학회
- 구본율, "전기 방사법을 이용한 플레이크형 LiCoO2 나노 분말의 제조", 한국분말야금학회지, 21(2), pp.108~113 (2014), 한국분말야금학회
- 신동요, "다공성 탄소나노섬유 지지체에 담지된 백금촉매의 메탄올 산화 특성 연구", 한국재료학회지, 25(3), pp.113~118 (2015), 한국재료학회
- 안혜란, "염료감응 태양전지의 Pt-free 상대전극을 위한 팔면체 Co3O4", 탄소나노섬유 복합체 제조, 2016, pp.26(5), 250~257[DOI]
- G. H. An, , J. Electroanal. Chem., 707, pp.74~ (2013)
- G. H. An, , J. Electroanal. Chem., 744, pp.32~ (2015)