Ultrafast Synthesis of Hard Carbon Anodes for Sodium‐ion Batteries: An Intense‐Pulsed‐Light‐Assisted Approach to Photothermal Carbonization of Polymer/Carbon Nanotube Composite Films

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

The conventional carbonization process for synthesizing hard carbons (HCs) requires high-temperature furnace operations exceeding 1000 °C, leading to excessive energy consumption and lengthy processing times, which necessitates the exploration of more efficient synthesis methods. This study demonstrates rapid preparation HC anodes using intense pulsed light (IPL)-assisted photothermal without prolonged complex typical traditional A composite film microcrystalline cellulose (MCC) single-walled carbon nanotubes (SWCNTs) is carbonized at high temperatures in less than 1 min. SWCNTs efficiently absorbed energy, enabling ultrafast heating eliminating need prolonged, high-energy furnace-based processes. IPL-assisted exhibited excellent electrochemical performance, with an initial desodiation capacity 260.4 mAh g⁻¹anode 97.5% retention after 200 cycles. These results are comparable those achieved processes, such as carbonizing 1200 validating effectiveness Additionally, surface structural analyses revealed development pseudo-graphitic domains, crucial enhanced sodium-ion storage. research highlights a viable, time-efficient, energy-saving alternative methods, offering sustainable pathway large-scale production future battery technologies.

Language: Английский

Correlating storage mechanism and solid electrolyte interphase kinetics for high-rate performance of hard carbon anode in ether electrolytes for sodium-ion batteries

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 631, P. 236234 - 236234

Published: Jan. 22, 2025

Language: Английский