Gaarud, Anders Thangaian, Kesavan Alonso-Sánchez, Pedro Blanco, Maria Valeria Strategies Toward the Production of Nanoporous <i>SiO<sub>x</sub></i>/C Anodes from the Sustainable Diatom‐<i>SiO</i><sub>2</sub> for Li‐Ion Batteries: A Comparative Study of Different Carbon Amounts 10.1002/adsu.202500117 2025 2025