Unlocking the Potential of Na2Ti3O7-C Hollow Microspheres in Sodium-Ion Batteries via Template-Free Synthesis

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(6), P. 423 - 423

Published: March 10, 2025

Layered sodium trititanate (Na2Ti3O7) is a promising anode material for sodium-ion batteries due to its suitable charge/discharge plateaus, cost-effectiveness, and eco-friendliness. However, slow Na+ diffusion kinetics, poor electron conductivity, instability during cycling pose significant challenges practical applications. To address these issues, we developed template-free method synthesize Na2Ti3O7-C hollow microspheres. The synthesis began with polymerization-induced colloid aggregation form TiO2–urea–formaldehyde (TiO2-UF) precursor, which was then subjected heat treatment induce inward crystallization, creating cavities within the structure, combined conductive carbon matrix, significantly enhanced performance rate capability of material. When used as an anode, microspheres exhibited high reversible capacity 188 mAh g−1 at 0.2C retained 169 after 500 cycles. Additionally, demonstrated excellent capacities 157, 133, 105, 77, 62, 45 current densities 0.5, 1, 2, 5, 10, 20C, respectively. This innovative approach provides new strategy developing high-performance battery anodes has potential advance field energy storage.

Language: Английский

Scaling up Renewable Energy Storage with Sodium Ion Batteries and Green Technology Policy

Published: Jan. 1, 2025

Language: Английский

Binders with cationic semi-interpenetrating networks for sodium-ion batteries under extreme conditions

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163466 - 163466

Published: May 1, 2025

Language: Английский