DOI: 10.66106/xinna7.20250206 ISSN: 3105-7527

缺陷调控型碳基材料的储钠性能及储能机制研究(Study on Sodium Storage Performance and Energy Storage Mechanism of Defect-Regulated Carbon-Based Materials)

聂佳磊 Jialei Nie
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Abstract：Sodium-ion batteries with abundant resources, low cost and high safety can alleviate lithium shortage for energy storage and low-speed transportation. Carbon anodes are optimal for industrialization, while traditional carbon materials show disordered structures and poor kinetic properties with low capacity and rapid capacity decay. Herein, an ultrasound-coupled microchannel continuous-flow method is adopted to precisely adjust defects and pore structures of carbon materials. Combined characterizations and electrochemical tests reveal the correlation between defects and sodium storage performance. The modified carbon balances sodium storage activity and structural stability, featuring lower interfacial impedance, faster sodium ion diffusion and greatly improved rate and cycling performance. This work establishes a parameter-structure-performance model and provides theoretical and technical guidance for green fabrication of high-performance carbon anodes.

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