산소환원반응 촉매용 질소 도핑된 탄소나노섬유의 제조
Synthesis of Nitrogen-doped Carbon Nanofibers for Oxygen Reduction Reaction
2
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
N-doped carbon nanofibers as catalysts for oxygen-reduction reactions are synthesized using electrospinning and carbonization. Their morphologies, structures, chemical bonding states, and electrochemical performance are characterized. The optimized N-doped carbon nanofibers exhibit graphitization of carbon nanofibers and an increased nitrogen doping as well as a uniform network structure. In particular, the optimized N-doped carbon nanofibers show outstanding catalytic activity for oxygen-reduction reactions, such as a half-wave potential (E1/2) of 0.43 V, kinetic limiting current density of 6.2 mA cm-2, electron reduction pathways (n = 3.1), and excellent long-term stability after 2000 cycles, resulting in a lower E1/2 potential degradation of 13 mV. The improvement in the electrochemical performance results from the synergistic effect of the graphitization of carbon nanofibers and the increased amount of nitrogen doping.
Abstract
N-doped carbon nanofibers as catalysts for oxygen-reduction reactions are synthesized using electrospinning and carbonization. Their morphologies, structures, chemical bonding states, and electrochemical performance are characterized. The optimized N-doped carbon nanofibers exhibit graphitization of carbon nanofibers and an increased nitrogen doping as well as a uniform network structure. In particular, the optimized N-doped carbon nanofibers show outstanding catalytic activity for oxygen-reduction reactions, such as a half-wave potential (E1/2) of 0.43 V, kinetic limiting current density of 6.2 mA cm-2, electron reduction pathways (n = 3.1), and excellent long-term stability after 2000 cycles, resulting in a lower E1/2 potential degradation of 13 mV. The improvement in the electrochemical performance results from the synergistic effect of the graphitization of carbon nanofibers and the increased amount of nitrogen doping.
참고문헌 (19)
- M. Lefevre, , Science, 324, pp.71~ (2009)
- 안건형, "Pt Electrocatalysts Composited on Electro-Spun Pt Nanowires for Direct Methanol Fuel Cells", 한국재료학회지, 22(8), pp.421~425 (2012), 한국재료학회[DOI]
- J. Snyder, , Nat. Mater., 9, pp.904~ (2010)
- 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)
- B. Wang, , J. Power Sources, 152, pp.1~ (2005)
- H. Peng, , Sci. Rep., 3, pp.1765~ (2013)
- Y. L. Liu, , Int. J. Hydrogen Energy, 40, pp.4531~ (2015)
- G. H. An, , Carbon, 65, pp.87~ (2013)
- G. H. An, , Ceram. Int., 38, pp.3197~ (2012)
- G. H. An, , J. Mater. Chem. A Mater. Energy Sustain., 4, pp.2049~ (2016)
- G. H. An, , Phys. Chem. Chem. Phys., 18, pp.6587~ (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]