Nitrogen-doped carbon spheres (NCSs) with uniform and regular morphology were facilely prepared by the modified Stöber method. Hexamethylenetetramine (HMT) was selected as the starting material, which decomposed to provide nitrogen and carbon sources for the synthesis of NCSs. The decomposition product formaldehyde polymerized to form carbon skeleton with resorcinol after carbonization, and the in-situ nitrogen doping was achieved with the decomposed nitrogen source. NCSs were obtained with regular spherical morphology, high specific surface area, and suitable nitrogen doping. When used as the electrode material, NCSs exhibited good capacitance and electrochemical stability, indicating that NCSs be the promising candidate for the electrode material of high-performance supercapacitors.

通过改进的Stöber方法可以轻松地制备出形态均匀且规则的氮掺杂碳球（NCS）。选择六亚甲基四胺（HMT）作为起始原料，其分解后可为合成NCS提供氮和碳源。碳化后，分解产物甲醛与间苯二酚聚合形成碳骨架，利用分解后的氮源实现原位氮掺杂。获得具有规则球形形态，高比表面积和合适氮掺杂的NCS。当用作电极材料时，NCSs表现出良好的电容和电化学稳定性，表明NCSs是高性能超级电容器电极材料的有前途的候选者。