Microporous N- and O-Codoped Carbon Materials Derived from Benzoxazine for Supercapacitor Application
Yuan-Yuan Li,
Yu-Ling Li,
Li-Na Liu,
Zi-Wen Xu,
Guanghui Xie,
Yufei Wang,
Fu-Gang Zhao,
Tianzeng Gao,
Wei-Shi Li
Affiliations
Yuan-Yuan Li
School of Chemical Engineering and Food Science, Zhengzhou University of Technology, Zhengzhou 450044, China
Yu-Ling Li
School of Chemical Engineering and Food Science, Zhengzhou University of Technology, Zhengzhou 450044, China
Li-Na Liu
School of Chemical Engineering and Food Science, Zhengzhou University of Technology, Zhengzhou 450044, China
Zi-Wen Xu
Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
Guanghui Xie
School of Chemical Engineering and Food Science, Zhengzhou University of Technology, Zhengzhou 450044, China
Yufei Wang
School of Chemical Engineering and Food Science, Zhengzhou University of Technology, Zhengzhou 450044, China
Fu-Gang Zhao
Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
Heteroatom-doped porous carbon materials are highly desired for supercapacitors. Herein, we report the preparation of such material from polybenzoxazine (PBZ), a kind of phenolic resin. Four different N- and O-codoped microporous carbon materials were obtained by changing carbonization temperature (600, 700, 800, and 900 °C). Their structures were characterized by scanning electron microscopy (SEM), nitrogen isothermal absorption and desorption, X-ray diffraction (XRD), Raman spectroscopy, elemental analysis and X-ray photoelectron spectroscopy (XPS), and their electrochemical performances were evaluated by cyclovoltammetry (CV) and galvanostatic charge–discharge (GCD) test in a three-electrode system. It was found that the carbon material (C-700) prepared at the carbonization temperature of 700 °C possesses the largest specific surface area (SSA), total pore volume and average pore size among the family, and thus displays the highest specific capacitance with a value of 205 F g−1 at a current density of 0.25 A g−1 and good cycling stability. The work demonstrates that the N- and O-codoped microporous carbon materials with high electrochemical performance can be derived from benzoxazine polymers and are promising for supercapacitor application.
