| Author | Devianto, Hary |
| Call Number | AIT Thesis no.ET-05-18 |
| Subject(s) | Fuel cells
|
| Note | A thesis submitted in partial fulfillment of the requirements for the
degree of Master of Engineering, School of Environmental, Resources, and Development |
| Publisher | Asian Institute of Technology |
| Abstract | It is well established that sulfur compounds in low parts per million concentrations in fuel gas are detrimental to MCFCs. H2S, the principal sulfur compound that has and adverse effect on cell performance, can block the active electrochemical sites. Ni anode at anodic potential reacts with H2S to form nickel sulfide. To enhance the anode performance on sulfur tolerance, ceria coating on anode is proposed. Another advantage from ceria coated anode is that it can increase the anode capacity to hold electrolyte due to surface modification effect. The objective of this research was to investigate the effect of ceria coating anode on wettability and sulfur tolerance. The scope of this research is on a single cell operating condition at 650°C and I atm, with hydrogen or methane as a fuel and H2S up to 100 ppm as an impurity. Ceria, 1-5 w% coating ratios, was deposited on Ni substrate by sol-gel dip coating method. It was found out that H2S acts as a poison in Ni electrode whether H2 or CH4 is used as fuel, except at OCV condition. CeO2 coating layer can reduce the effect of poisoning because it has the ability to remove H2S especially in a highly reducing gas at high temperature. MCFC operating condition is sufficient to reduce CeO2 to a non-stoichiometric oxide, which has good effect on removing H2S |
| Year | 2005 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Energy Technology (ET) |
| Chairperson(s) | Lim, Tae-Hoon;Kumar, Sivanappan |
| Examination Committee(s) | Yoon, Sung-Pil |
| Scholarship Donor(s) | Korea Institute of Science and Technology
Asian Institute of Technology Fellowship |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2005 |