Construction of honeycomb-like N-doped porous carbon framework with effective aperture distribution toward advanced supercapacitors and sodium-ion batteries

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2024-11, Vol.500, p.156779, Article 156779
• Main Authors: Zhang, Qian, Yue, Peng, Jia, Minyu, Jia, Jiale, Ren, Yongfeng, Li, Guangwu, Sun, Jinfeng, Hou, Linrui, Chen, Meng, Yuan, Changzhou
• Format: Article
• Language: English
• Subjects: Effective aperture distribution; High surface utilization; Honeycomb-like N-doped porous carbon; Sodium-ion batteries; Supercapacitor
• ISSN: 1385-8947
• DOI: 10.1016/j.cej.2024.156779

•Honeycomb-like N-doped porous carbon (NPC) framework with effective aperture distribution is constructed.•The intrinsic formation mechanism of 3D porous NPC framework is tentatively proposed.•The optimized NPC114 shows better capacitance in 3 M KOH, due to its accessible high-ratio ultra-micropores.•NPC115 with higher meso-/macro-pore surface area exhibits higher energy density than other counterparts.•NPC114 exhibits high-rate Na+-storage properties as anode material for sodium-ion batteries. Smart synthesis of porous carbon with appropriate aperture distribution and high area utilization still retains an enormous challenge for efficient charge storage. Herein, a simple freeze-drying along with subsequent one-step carbonization/activation process is ingeniously devised to fabricate honeycomb-like nitrogen-doped porous carbon (NPC) framework with high-level active N/O-functional groups and hierarchical porous structure including substantial ultra-micropores (