Abstract Scope |
Solid Oxide Fuel Cells (SOFCs) hold promise for a pathway to clean, secure, and sustainable energy production. Amidst the global shift from hydrogen to hydrocarbon fuels in fuel cell technologies, SOFCs flexibility in fuel usage becomes pivotal for facilitating this realization. As both fuel types may harbor sulfur-containing contaminants, detrimental to performance, the design challenge for SOFCs lies in developing robust sulfur tolerant catalysts. To address this challenge, the authors are exploring La0.7Sr0.3VO3.85-ó (LSV), known for its significantly lower sulfur adsorption across various operating conditions (400-700°C, 30-3,000ppm sulfur contamination). This study investigates LSV's performance metrics, such as room temperature charge transfer resistance and overall bulk conductivity, following exposure to 30-300ppm H2S/balance H2 at temperatures between 400-600°C for up to 100 hours, through both experimental and theoretical lenses to uncover the underlying mechanisms at play. |