| 학회 |
한국화학공학회 |
| 학술대회 |
2018년 봄 (04/25 ~ 04/27, 창원컨벤션센터) |
| 권호 |
24권 1호, p.542 |
| 발표분야 |
에너지 환경 |
| 제목 |
Coke resistant microstructure of NiO-GDC anode catalyst in direct methane fueled solid oxide fuel cells |
| 초록 |
We developed a coated nickel catalysts for promoting a coke-tolerance in anode. Enhanced low-temperature solid oxide fuel cell was fabricated with this functional catalyst layer in anodes. Microstructural change being core-shell structure enhances the coking resistances as a result of the GDC shells protecting the coke-susceptible Ni surfaces. Furthermore, catalytic activities for CH4 and CO oxidations also increased with core-shell like catalysts because of their structure expanding 2PB sites and nano-pores. This highly active anode catalayst layers which has benefits to prevent carbon formations induced by CO disproportionation at low temperatures boosts a durability of the low-temperature solid oxide fuel cells in dry methane. A powder density of this cell was 1.42 W cm-2 at 610 oC in dry methane and it operated over 1000 h at a current density of 1.2 A cm-2. As a result, core-shell structural anode catalyst layer which is an effective design to enhance catalytic activities and avoid degradation with long-term operation is promising for low-temperature solid oxide fuel cells in CH4. |
| 저자 |
전옥성1, 이진구2, 황호정1, 이찬민1, 지윤성1, 권오찬1, 김정필1, 설용건1
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| 소속 |
1연세대, 2Univ. of St Andrews |
| 키워드 |
에너지 환경 |
| E-Mail |
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| 원문파일 |
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