高性能超级电容器用三维星形co - nc的构建

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2025-09-11 DOI:10.1007/s10853-025-11445-w

Lun Qi, Dan Tu, Yu Shi, Jingjing Liu, Xinyuan Zhao, Jianhua Xu, Yajie Yang, Wenyao Yang

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引用次数: 0

摘要

沸石咪唑盐框架材料因其多孔性和结构可控性在超级电容器研究中备受关注。本文以三维星形Co-ZIF为前驱体，通过简单的一步煅烧法制备了一系列co -氮碳（co - nc）。分析了co - nc的储能机理，认为其星形多孔形态和高赝电容贡献使其具有优异的电容和循环稳定性。优化后的co - nc /550在0.1 a g−1电流密度下具有825 F g−1的比容量，在2 a g−1电流密度下具有超过5000次的高度稳定的循环性能。本研究为高性能超级电容器稳定电极的设计提供了一种实用的策略。

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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Construction of 3D star-shaped Co–NCs for high-performance supercapacitors

Zeolitic imidazolate frameworks (ZIFs) have greatly attracted attention in supercapacitors research due to their porosity and structural controllability. In this paper, a series of Co–nitrogen carbon (Co–NCs) were obtained via a facile one-step calcination process using 3D star-shaped Co–ZIF as a precursor. The energy storage mechanism is analyzed and it is concluded that Co–NCs show excellent capacitance and cycling stability, attributed to its star-shaped porous morphology and high pseudocapacitance contribution. The optimized Co–NCs/550 exhibits a specific capacity of 825 F g⁻¹ at a current density of 0.1 A g⁻¹, and a highly stable cycling performance over 5000 cycles at a current density of 2 A g⁻¹. This work provides a practical strategy for designing stable electrode for high-performance supercapacitors.

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.