Synthesis of uniform discrete cage-like nitrogen-doped hollow porous carbon spheres with tunable direct large mesoporous for ultrahigh supercapacitive performance

• DOI: 10.1016/j.apsusc.2017.06.279
• Publication Date: 2017-07-01T03:31:51Z
• Authors: Mingming Fang; Zhimin Chen; Qiuge Tian; Yanxia Cao; Chong Wang; Yuan Liu; Jianwei Fu; Jianan Zhang; Lichen Zhu; Chong Yang; Jiafu Chen; Qun Xu
• Keywords: 02 engineering and technology; 0210 nano-technology

Abstract Uniform discrete cage-like nitrogen-doped hollow porous carbon spheres (CN-HPCS) with tunable direct large mesoporous (18–30 nm) have been successfully synthesized for the first time by using the carboxylated polystyrene spheres and silica particles as a dual-template and dopamine as the carbon and nitrogen sources. When they are used as the electrode for supercapacitors, these CN-HPCS exhibit a high specific capacitance of 257 F g−1 at 1 A g−1 and 194 F g−1 at 10 A g−1 with excellent rate capability and cycling stability.