The preparation of high electrochemical performance SnO₂-based anode is a crucial promotion to be an alternative electrode for lithium storage. To this end, SnO₂ hollow nanospheres covered with nitrogen-doped carbon shell (denote as NC@SnO₂ HNSs) are designed and synthesized. The NC@SnO₂ HNS electrode could not only improves the conductivity of pure SnO₂ HNSs effectively, but also possesses a large proportion of the cavity (73.8 %), which could cope the strain relaxation. Benefiting from the superior structural design, the NC@SnO₂ HNS electrode exhibits high reversible capacity (868.6 mAh g⁻¹ after 200 cycles at 0.2 A g⁻¹), long-term cycling performance (360.6 mAh g⁻¹ after 500 cycles at 1.0 A g⁻¹) and superior rate performance.

制备高电化学性能的 SnO ₂基负极是成为锂存储替代电极的关键。为此，设计并合成了覆盖有氮掺杂碳壳的SnO ₂空心纳米球（表示为 NC@SnO ₂ HNS）。NC@SnO ₂ HNS电极不仅可以有效提高纯SnO ₂ HNSs的电导率，而且具有较大比例的空腔（73.8 %），可以应对应变弛豫。从优异的结构设计受益，该NC @的SnO _2个HNS电极表现出高的可逆容量（毫安868.6克^-1在0.2 200次循环后的克^-1），长期循环性能（360.6毫安克^-1 1.0 A G 500次循环后^-1）和优异的倍率性能。