Novel design of lignite-derived nitrogen-doped porous carbon with superior electrochemical performance

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-10-03 DOI:10.1016/j.matlet.2025.139608

Feng Jin , Junsheng Zhu

引用次数: 0

Abstract

A novel lignite-derived nitrogen-doped porous carbon (LNPC) has been fabricated through an easy pyrolysis method. Due to the preeminent synergistic effect of the porous structure and the nitrogen doping, LNPC has demonstrated superior capacitive behavior. The reversible capacitance of LNPC is 301, 260, 244, 233, 229 and 221 F g⁻¹ at 1, 2, 4, 6, 8 and 10 A g⁻¹, respectively, which is superior to lignite-derived porous carbon (LPC). The electrochemical impedance spectroscopy (EIS) results demonstrate that nitrogen doping can improve the electron and ion transfer of the electrode. Moreover, the assembled symmetrical super-capacitor delivers a reversible capacitance of 45 F g⁻¹ at 1 A g⁻¹ with the capacitance retention of ∼100 % after 20,000 cycles.

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具有优异电化学性能的褐煤衍生氮掺杂多孔碳的新设计

采用易热解法制备了一种新型的褐煤衍生的氮掺杂多孔碳。由于多孔结构和氮掺杂的协同作用，LNPC表现出优异的电容性能。LNPC在1、2、4、6、8和10 A g−1时的可逆电容分别为301、260、244、233、229和221 F g−1，优于褐煤衍生多孔碳（LPC）。电化学阻抗谱（EIS）结果表明，氮掺杂可以改善电极的电子和离子转移。此外，组装的对称超级电容器在1 a g−1时提供45 F g−1的可逆电容，在20,000次循环后电容保持率为100%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive