J. power sources J. power sources Performance-optimized diatom- [fórmula] anodes for Li-ion batteries by preserving the nanostructured SiO2 shells of diatom microalgae and tailoring oxygen content Thangaian Kesavan Ericson Tove Vullum Per Erik Alonso-Sánchez Pedro Svarverud Annlinn Chen Svensson Ann Mari Vullum-Bruer Fride Hahlin Maria Blanco Maria Valeria 2025 research-article