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<p>Supercapacitors have garnered significant attention in recent years owing to their exceptional attributes, such as high power density, prolonged cycle stability, and the capacity to fulfil the gap between the traditional capacitor and a lithium-ion battery. Ordered mesoporous carbon (OMC) is one of the important options for supercapacitor electrode material. However, the OMC prepared by evaporation-induced self-assembly (EISA) has poor electrochemical performance. Here, N-doped ordered mesoporous carbons were synthesized by EISA after post-treatment (OMC-N), and the results confirmed that OMC-N has the typical characteristics of order mesoporous carbon, such as high specific surface area (1261&#xa0;m<sup>2</sup>/g) and a 2D hexagonal mesostructure. More importantly, OMC-N possesses a high content of pyridine nitrogen and a high degree of graphitizing, which are beneficial for improving the electrochemical performance. The specific capacitance tested by GCD could reach to 308&#xa0;F/g with 1&#xa0;A/g current density with excellent long-term electrochemical stability. Excellent electrochemical performance of OMC-N, making it a viable candidate for supercapacitor electrode material applications.</p>

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High Pyridine Nitrogen-Doped Ordered Mesoporous Carbon for Supercapacitor Applications

  • 期刊论文

  • 发表日期：

    2025年5月13日

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  • Yunfei Cheng,
  • Wenqing Wei,
  • Jing Sun,
  • Yongtao Wang,
  • Mengqin Shen

摘要

Supercapacitors have garnered significant attention in recent years owing to their exceptional attributes, such as high power density, prolonged cycle stability, and the capacity to fulfil the gap between the traditional capacitor and a lithium-ion battery. Ordered mesoporous carbon (OMC) is one of the important options for supercapacitor electrode material. However, the OMC prepared by evaporation-induced self-assembly (EISA) has poor electrochemical performance. Here, N-doped ordered mesoporous carbons were synthesized by EISA after post-treatment (OMC-N), and the results confirmed that OMC-N has the typical characteristics of order mesoporous carbon, such as high specific surface area (1261 m2/g) and a 2D hexagonal mesostructure. More importantly, OMC-N possesses a high content of pyridine nitrogen and a high degree of graphitizing, which are beneficial for improving the electrochemical performance. The specific capacitance tested by GCD could reach to 308 F/g with 1 A/g current density with excellent long-term electrochemical stability. Excellent electrochemical performance of OMC-N, making it a viable candidate for supercapacitor electrode material applications.