Strategies Toward the Production of Nanoporous SiO_x/C Anodes from the Sustainable Diatom‐SiO₂ for Li‐Ion Batteries: A Comparative Study of Different Carbon Amounts

Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown

Published: March 30, 2025

Abstract Nanostructured SiO x /C composites are promising candidates for high energy density anodes with extended lifespan in next‐generation Li‐ion batteries (LIBs). However, integrating sustainable precursors the synthesis of performance negative electrodesremains a key challenge. In this study, nanoporous 2 derived from shells industrially cultured diatom microalgae is successfully used as template synthesizing via magnesiothermic reduction reaction (MgTR), while effectiveness different carbon coating (CC) strategies to produce diatom‐ glucose precursor thoroughly analyzed. Notably, original nanostructure frustule preserved throughout process, and it demonstrated that increasing heating ramp during MgTR enhances Si yield, leading significant increase specific capacity 1064 mAh.g −1 (2 °C/min ) 1846 (20 ). A comparative analysis three pathways producing composites: 1) followed by CC, 2) CC MgTR, 3) simultaneous precursor, revealed pathway (1) most effective highcapacity anodes. These findings provide enablers developing superior electrochemical performance.

Language: Английский

Performance-optimized diatom-SiOx anodes for Li-ion batteries by preserving the nanostructured SiO

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 641, P. 236837 - 236837

Published: April 2, 2025

Language: Английский