Operando ETEM study on solid oxide cells Zhongtao Ma, Christodoulos Chatzichristodoulou, Kristian Speranza Mølhave and Søren Bredmose Simonsen BIO Web Conf., 129 (2024) 25008 Published online: 17 October 2024 DOI: 10.1051/bioconf/202412925008