Dual-shell hollow carbon spheres (DHCS) is beneficial for charge transfer and storage due to their regular spherical morphology, large cavity, rich porous structure and thin dual-shell, which guarantees the improved electrochemical performance. Herein, a dissolution-reassembly strategy with silica additive is used to prepare DHCS with excellent electrochemical performance in supercapacitor. The core of solid aminophenol/formaldehyde (AF) resin spheres is coated by compact silica shell. AF core can be selectively dissolved by appropriate amounts of acetone to create cavity. Moreover, the dissolved AF oligomer will re-assembly with silica additive on the surface of compact silica shell to from another shell under the bridge effect of cetyltrimethyl-ammonium bromide. After the pyrolysis and etching silica, the DHCS was obtained, showing uniform spherical morphology, thin dual-shell, rich porous structure, high surface area and possesses suitable N-doping content, which endows the DHCS with outstand electrochemical performance when used as electrode material in supercapacitor.

双壳中空碳球（DHCS）具有规则的球形形态，大空腔，丰富的多孔结构和薄的双壳，有利于电荷转移和存储，从而保证了改进的电化学性能。在本文中，使用二氧化硅添加剂的溶解-重组策略来制备在超级电容器中具有优异电化学性能的DHCS。固体氨基苯酚/甲醛（AF）树脂球的芯层被紧凑的二氧化硅外壳覆盖。AF芯可通过适量的丙酮选择性溶解以形成空腔。而且，在十六烷基三甲基溴化铵的桥连作用下，溶解的AF低聚物将与致密二氧化硅壳表面上的二氧化硅添加剂重新组装成另一壳。经过二氧化硅的热解和蚀刻后，得到了DHCS，