Boron and Nitrogen Co-Doped Porous Carbons Synthesized from Polybenzoxazines for High-Performance Supercapacitors

Coatings

Lizhong Bai¹  Lijun Bai²  Yanping Ge² 

[1] College of Optical Science and Engineering, Zhejiang University, Hangzhou 310058, China;Department of Fundamental Education, Shanxi Institute of Technology, Yangquan 045000, Shanxi, China;

关键词: boron and nitrogen co-doped;    porous carbons;    boron-containing polybenzoxazines;    supercapacitors;   

DOI  :  10.3390/coatings9100657

来源: DOAJ

【 摘 要 】

Boron and nitrogen co-doped porous carbons (BNPC-X) were synthesized from boron-containing polybenzoxazines through carbonization and chemical activation, where X represents the weight ratio of boric acid to benzoxazine resin. The as-prepared BNPC-X were characterized by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, element analysis and electrochemical measurements. The results show that the BNPC-0.15 possesses relatively high weight fractions of boron (2.97 wt %) and nitrogen (2.43 wt %), a homogeneous pore distribution, and remarkable electrochemical capacitive performance. It exhibits high specific capacitance (286 F·g⁻¹ at 0.05 A·g⁻¹), excellent rate capability (at A·g⁻¹), and good charge−discharge stability (>92% capacitance retention after 1,000 cycles at 1.0 A·g⁻¹) in 6 M KOH aqueous solution.

【 授权许可】

Unknown