Rational design and fabrication of SnO₂@C composites with tailored structures enables the advanced electrochemical behaviors for the next-generation lithium-ion batteries. Benefiting from the enhanced electronic conductivity and porous structure, the integrated composites deliver the high reversible capacity as well as the outstanding rate capability. A high discharge capacity of 745.7 mAh g⁻¹ is achieved at 0.1 A g⁻¹ after 150 cycles. The discharging capacity of 292.0 mAh g⁻¹ is observed at the high rate of 2 A g⁻¹. Remarkably, the negligible capacity degradation is discerned under low and high current density (100, 500 mA g⁻¹) in long-term electrochemical stability test. Therefore, the novel structure design for carbon-encapsulated SnO₂ makes it a promising strategy to fabricate more efficient anode materials for lithium-ion batteries.

具有定制结构的SnO ₂ @C复合材料的合理设计和制造可为下一代锂离子电池提供先进的电化学性能。得益于增强的电子导电性和多孔结构，集成复合材料具有高可逆容量和出色的倍率性能。150次循环后，在0.1 A g ^-1下可获得745.7 mAh g ^-1的高放电容量。的292.0毫安克的放电容量^-1是在2所述的G的高速率观察到^-1。值得注意的是，在低电流密度和高电流密度（100，500 mA g ^-1）进行长期电化学稳定性测试。因此，碳封装的SnO ₂的新颖结构设计使其成为制造锂离子电池更有效的负极材料的有前途的策略。