Effect of preparation and oxygen evolution catalysis on CoNiFe oxide electrocatalysts revealed by STEM-EELSNils Rockstroh, Trang Pham, Carsten Kreyenschulte, Annette-Enrica Surkus and Robert FranckeBIO Web Conf., 129 (2024) 25036DOI: https://doi.org/10.1051/bioconf/202412925036