고온 SOFC 연구

소개글

고온동작 SOFC에 관한 프레젠테이션

목차

■ Introduction
■ SOFC at elevated temperature
■ SOFC at intermediate temperature
■ Conclusions

본문내용

Advantages of elevated tempertaure :
● Use of non-precious metal electrode catalysts
● Higher fuel flexibility :
H2 and O2 are both fuels for an SOFC enabling the ready use of today’s carbon based fuels
● Possibility of direct internal reforming of hydrocarbon fuels :
no need for pre-reformer
● High energy conversion efficiency of hydrocarbon fuels
● Rapid electrode kinetics
● Two phase gas solid systems :
eliminates probrems associated with liquid electrolytes
● Not poisoned by CO
● Availability of high-grade waste heat for co-generation purposes

- Ceramics multi-layer structure(fragile by mechanical & thermal shock)
- Mass production & Cost reduction
(Downsizing, densification, reduction of materials and manufacturing)
- Development of small scale systems
(automobile, portable and in-house application)
- Micro-tubular SOFC(possibility of rapid start-shut down)
- Applicability of various fuels (Di-Methyl-Ether : less carbon deposition)
- Carbon free anode (electrochemical oxidation of deposited carbon)
Carbon on Ni ⇒ low electrochemical reactivity
- Long term stability cathode

참고 자료

W.Z.Zhu,S.C.Deevi, MS&E A 362(2003) 228-239
J. Eur.Ceram.Soc. 21(2001) 1805-1811
Nature 414(2001) 345-352
www.fuelcellmaterials.com