Understanding (La,Sr)(Co,Fe)O_3-δ Phase Instability within SOECs Using a Combined Experimental and Atomistic Modeling Approach.

ABSTRACT: Understanding the onset of degradation in the air electrode within solid oxide electrolysis cells (SOECs), and the subsequent impact on cell performance, is a critical step in mitigating the performance losses and stability issues of SOECs. In an effort to identify early onset degradation phenomena, SOECs were characterized as fabricated and after testing potentiostatically at 1.3 V for 1000 h at 750 °C. SOEC air electrodes composed of a 1:1 composite of La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ (6428-LSCF) and Gd_0.1Ce_0.9O_1.95 (GDC) were studied using synchrotron X-ray diffraction (XRD), scanning transmission electron microscopy coupled with energy dispersive X-ray spectroscopy (STEM-EDS), and X-ray absorption near-edge

SUBMITTER: Slomski HS 

PROVIDER: S-EPMC11950864 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature