Details

Autor(en) / Beteiligte

• Rangel-Hernandez, Victor
• de Haart, Ute
• Fang, Qingping
• Schäfer, Dominik
• Thaler, Florian
• Peters, Ralf
• Blum, Ludger

Titel

An Investigation of the Redox Stability of an Anode-Supported SOFC Stack Using Acoustic Emission Monitoring

Ist Teil von

• ECS transactions, 2021, Vol.103 (1), p.1395-1402

Erscheinungsjahr

2021

Beschreibungen/Notizen

• The mechanical stability of an SOFC stack is compromised when its cells operate in oxidation-reduction (Redox) environments. Previous studies, based mainly on voltage-current or electrochemical impedance measurements, showed that cell performance degraded upon redox cycling above 600°C. Therefore, the purpose of this work is to investigate the Redox process and the stability of a SOFC stack applying the Acoustic Emission (AE) monitoring technique. The investigation includes the interpretation of AE events and signals considering their waveform and frequency content.