Structural evolution of carbon deposition on a Ni/YSZ cermet of a SOFC analyzed by soft x-ray XANES spectroscopy

This paper investigated the structural evolution of carbon deposition on a Ni/YSZ cermet of a SOFC. The Ni/YSZ cermet was heated in CH4/Ar environment with a thermobalance. It was observed that carbon deposition preferentially occurred on Ni particles, and the area on which carbon deposited touched the Ni/YSZ interfaces. Meanwhile, carbon deposition was not found on some of the Ni/YSZ interfaces. The Ni/Zr interfaces had various defects,...