Carbon nanospheres from phenolic resin are considered as one of the most hopeful carbon-based materials for lithium storage due to the controllable size, adjustable structure, and easy fabrications. However, the lithium-ion storage properties of as-prepared carbon spheres were suppressed by the inaccessible interior sites and low heteroatom content. Here, 3-Aminophenol-Formaldehyde resin@Polystyrene@ Polypyrrole core/interlayer/shell nanospheres were designed as precursors to prepare nitrogen-containing carbon spheres. With the appropriate amount of polystyrene interlayer, carbon spheres with a gap were formed, which shown an enhanced reversible discharge capacity of 536.9 mAh g⁻¹ after 1600 cycles at 2 A g⁻¹. The superior electrochemical performance can be mainly ascribed to the introduction a gap between core and shell, which have made interior sites accessible. High nitrogen content and elegant nanostructure are also the main factors to improve Lithium-ions storage performance.

由酚醛树脂制成的碳纳米球由于尺寸可控、结构可调和易于制造而被认为是最有希望的锂存储碳基材料之一。然而，所制备的碳球的锂离子存储性能受到难以接近的内部位点和低杂原子含量的抑制。在这里，3-氨基苯酚-甲醛树脂@聚苯乙烯@聚吡咯核/中间层/壳纳米球被设计为制备含氮碳球的前体。使用适量的聚苯乙烯中间层，形成具有间隙的碳球，在 2 A g -1 下循环 1600 次后，其可逆放电容量提高了 536.9 ^mAh g ^-1. 优异的电化学性能主要归因于在核和壳之间引入间隙，这使得内部位点可访问。高氮含量和优雅的纳米结构也是提高锂离子存储性能的主要因素。