Effect of carbonization atmosphere on electrochemical properties of nitrogen-doped porous carbon

IF 2.5 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Frontiers of Materials Science Pub Date : 2023-12-04 DOI:10.1007/s11706-023-0669-1

Fangfang Liu, Jinan Niu, Xiuyun Chuan, Yupeng Zhao

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Abstract

Nitrogen atom doping has been found to enhance the electrochemical performance of porous carbon (PC). In this study, hollow tubular nitrogen-doped porous carbon (N/PC) was synthesized using polyvinylpyrrolidone as the carbon–nitrogen source and fibrous brucite as the template through carbonization. The effects of nitrogen and argon protective atmospheres on the nitrogen content, the specific surface area (SSA), and electrochemical properties of N/PC were investigated. The results showed that compared with N/FBC-Ar, N/FBC-N₂ prepared in nitrogen protective atmosphere had a higher nitrogen content and a larger proportion of pyrrolic nitrogen (N-5) and pyridinic nitrogen (N-6). N/FBC-N₂ displayed a specific capacitance (C) of 194.1 F·g⁻¹ at 1 A·g⁻¹, greater than that of N/FBC-Ar (174.3 F·g⁻¹). This work reveals that the nitrogen doping with a higher nitrogen content in nitrogen protective atmosphere is more favorable. Furthermore, a larger proportion of pyrrolic nitrogen and pyridinic nitrogen in the doped nitrogen atoms significantly enhances the electrochemical performance.

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碳化气氛对掺氮多孔碳电化学性能的影响

氮原子掺杂可以提高多孔碳(PC)的电化学性能。本研究以聚乙烯吡咯烷酮为碳氮源，水镁石纤维为模板，经碳化制备了空心管氮掺杂多孔碳(N/PC)。研究了氮气和氩气保护气氛对N/PC的氮含量、比表面积(SSA)和电化学性能的影响。结果表明，与N/FBC-Ar相比，氮气保护气氛下制备的N/FBC-N2具有更高的氮含量，且吡啶氮(N-5)和吡啶氮(N-6)的比例更大。N/FBC-N2在1 a·g−1时的比电容(C)为194.1 F·g−1，大于N/FBC-Ar的174.3 F·g−1。研究表明，在氮气保护气氛中，氮含量越高的氮掺杂效果越好。此外，在掺杂的氮原子中，吡咯氮和吡啶氮的比例越大，电化学性能就越好。

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来源期刊

Frontiers of Materials Science MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

4.20

自引率

3.70%

发文量

515

期刊介绍： Frontiers of Materials Science is a peer-reviewed international journal that publishes high quality reviews/mini-reviews, full-length research papers, and short Communications recording the latest pioneering studies on all aspects of materials science. It aims at providing a forum to promote communication and exchange between scientists in the worldwide materials science community. The subjects are seen from international and interdisciplinary perspectives covering areas including (but not limited to): Biomaterials including biomimetics and biomineralization; Nano materials; Polymers and composites; New metallic materials; Advanced ceramics; Materials modeling and computation; Frontier materials synthesis and characterization; Novel methods for materials manufacturing; Materials performance; Materials applications in energy, information and biotechnology.