| 학회 |
한국화학공학회 |
| 학술대회 |
2015년 봄 (04/22 ~ 04/24, 제주 ICC) |
| 권호 |
21권 1호, p.670 |
| 발표분야 |
에너지 |
| 제목 |
Synthesis alternative PEMFC cathode catalyst with titanium dioxide support materials |
| 초록 |
Highly active modified Pt/TiO2 catalyst was synthesized by following steps. The titanium dioxide nanofiber (TiO2) as a support material prepared by electrospinning, platinum (Pt) nanoparticles deposited on TiO2 nanofiber by Microwave-assisted polyol method. The platinum particles is about 5nm and TiO2 nanofiber diameter was about 300nm. Although it is hard to direct use Pt/TiO2 catalyst for PEMFC cathode, by adding a carbon nanotube (CNT) improves activity of the Pt/TiO2 catalyst. The CNT added Pt/TiO2 (CNT-Pt/TiO2) catalyst sample was characterized by XRD, SEM, TEM, and electrochemical measurements. The results show that the CNT-Pt/TiO2 catalyst has significantly enhanced performance to comparable with commercial Pt/C catalyst. Also it has much more durable than carbon support. CNT is well mixed with TiO2 nanofiber and makes 3D web structure. Electrons created on platinum can transfer on the CNT. CNT-Pt/TiO2 has enhanced electrical conductivity. From the single cell test, the resistance of catalyst decreases about 6 times and current density increases about 8 times of initial Pt/TiO2. CNT-Pt/TiO2 achieved 0.189 Ω and 1322mA/cm2 at 0.6V (0.76W/cm2). |
| 저자 |
지윤성, 조용일, 전유권, Ulziidelger, 장정석, 이기천, 설용건
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| 소속 |
연세대 |
| 키워드 |
PEMFC; cathode; catalyst; titanium dioxide; carbon nanotube (CNT)
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| E-Mail |
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| 원문파일 |
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