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Open AccessArticle

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

1
Department of Fundamental Education, Shanxi Institute of Technology, Yangquan 045000, Shanxi, China
2
College of Optical Science and Engineering, Zhejiang University, Hangzhou 310058, China
3
Shanxi Province Key Laboratory of Functional Nanocomposite Materials, North University of China, Taiyuan 030051, China
*
Author to whom correspondence should be addressed.
Coatings 2019, 9(10), 657; https://doi.org/10.3390/coatings9100657
Received: 28 August 2019 / Revised: 4 October 2019 / Accepted: 8 October 2019 / Published: 11 October 2019
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.
Keywords: boron and nitrogen co-doped; porous carbons; boron-containing polybenzoxazines; supercapacitors boron and nitrogen co-doped; porous carbons; boron-containing polybenzoxazines; supercapacitors
MDPI and ACS Style

Bai, L.; Ge, Y.; Bai, L. Boron and Nitrogen Co-Doped Porous Carbons Synthesized from Polybenzoxazines for High-Performance Supercapacitors. Coatings 2019, 9, 657.

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