Investigation about the oxidation behaviour of hydrocarbons and hydrogen on LCCM-GDC based anode in the presence of palladium catalyst

• Main Author: Tan, Soon Lee.
• Other Authors: Jiang San Ping
• Format: Final Year Project
• Language: English
• Published: 2009
• Subjects: DRNTU::Engineering::Mechanical engineering::Alternative, renewable energy sources
• Online Access: http://hdl.handle.net/10356/17192
• Institution: Nanyang Technological University

In this project, La0.7 Ca0.3 Cr0.5 Mn0.5 O2.6 - Gd0.1Ce0.9o2 (LCCM/GDC) based anode in the presence of palladium catalyst is investigated in detail for hydrogen oxidation and direct utilization of methane in solid oxide fuel cell. For this composite anode, the optimum sintering temperature found over the temperature range of 1150°C to 1350°C is 1300°C. As for the operating temperature of this composite anode, it works best from 800°C to 850°C as this composite anode is subjected to operating temperature of 600°C to 850°C. With Pd impregnation, the electrode polarization resistance is reduced. This reduction is more significant in the oxidation reaction in wet CH4 as compared to wet H2. Also, through scanning electrode microscope, it can be observed that Pd impregnation enhance the contact between the particles and the electrolyte. Thus, these results suggest that Pdimpregnated LCCM/GDC composite anode is a possible alternative anode for the natural gas fuel-based solid oxide fuel cells.