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Giang Le

Giang Le

Solid oxide fuel cell (SOFC) technology offers great potential for clean power generation for its high conversion efficiency and fuel flexibility. However, its commercialization has been limited from a lack of long-term stability. My research seeks to use non-linear electrochemical impedance spectroscopy (NLEIS) as a tool for early detection of performance degradation in SOFC, providing the ability to prevent critical failure and prolong SOFC lifetime. NLEIS probes the harmonic response of a system, providing insights into non-linear kinetics, transport and system control processes. By uncovering these underlying phenomena, NLEIS can provide valuable information about the condition of SOFC system. Starting with a control-integrated SOFC model, I will simulate NLEIS responses under failing conditions to determine patterns linked to different degradation mechanisms. This will be followed by experiments with a commercially available SOFC. From simulation and experimental results, I hope to demonstrate ability to use NLEIS for SOFC performance diagnosis.

Advisor: Stuart Adler — Chemical Engineering

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