Chem. eng. j. Chem. eng. j. Laser driven generation of single atom Fe-N-C catalysts for the oxygen reduction reaction Madrid Ainhoa Tolosana-Moranchel Álvaro García Álvaro Rojas Sergio Bartolome Fernando Pakrieva Ekaterina Universidad de Zaragoza Simonelli Laura Martinez Gema Hueso Jose L. Universidad de Zaragoza Santamaria Jesus Universidad de Zaragoza 2024 research-article