Synthesis and energy storage properties of N/O co-doped porous carbon nanoribbons

• Main Authors: KAN Kan, WANG Jue, FU Dong, SONG Mei-hui, ZHANG Wei-jun, ZHANG Xiao-chen
• Format: Article
• Language: zho
• Published: Journal of Materials Engineering 2020-08-01
• Series: Journal of Materials Engineering
• Subjects: heteroatom doped; porous carbon; carbon nanoribbon; energy storage property; super-capacitor
• Online Access: http://jme.biam.ac.cn/CN/Y2020/V48/I8/101
• ISSN: 1001-4381; 1001-4381

The N/O co-doped porous carbon nanoribbons (PCNR) have been prepared <i>via</i> a template polymerization synchronous chemical activation route. The PCNR samples were characterized by SEM, TEM, FTIR, Raman, XRD, BET and XPS. The results show that the PCNR presents a 3D connected ribbon structure. The surface of carbon nanoribbons is porous. The PCNR800 activated at 800 ℃ presents a large specific surface area of 2342 m²/g, high-level nitrogen atom doping of 10.75% and oxygen atom doping of 13.90%. As supercapacitor electrode materials, the typical PCNR800 sample exhibits excellent energy storage characteristics. The PCNR800 supercapacitor shows a high specific capacitance of 58.8 F/g (1.0 A/g). A high energy density of 73.3 Wh/kg at a power density of 1.5 kW/kg can be achieved. The specific capacitance of the supercapacitor was 96.5% of the initial specific capacitance and the columbic efficiency still remains above 99% after 5000 cycles.