首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Nitrogen-containing porous carbon/alpha-MnO2 nanowires composite electrode towards supercapacitor applications
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Nitrogen-containing porous carbon/alpha-MnO2 nanowires composite electrode towards supercapacitor applications

机译:含氮多孔碳/α-MNO2纳米线复合电极朝向超级电容器应用

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摘要

Porous carbon composite electrodes have attracted extensive attention due to their excellent electrochemical performance toward energy storage applications. In this work, hierarchical nitrogen-containing porous carbon (HNPC) and alpha-MnO2 nanowires composite electrode is prepared through a template method. The as-prepared composite electrode, characterized as one-dimensional nanowires inserted into three-dimensional interconnected porous structures, exhibits high specific capacitance of 204.6 F g(-1) at 1 A g(-1) and excellent cycling stability (97.2% remains after 5000 cycles). Moreover, the fabricated asymmetric supercapacitor based on HNPC//HNPC/MnO2 achieves a wide working voltage window of 1.8 V and a high energy density up to 30.1 Wh kg(-1) at a power density of 900.0 W kg(-1). The results indicate that the HNPC/MnO2 composite electrodes with excellent electrochemical performance have promising perspective in supercapacitor applications. (C) 2019 Elsevier B.V. All rights reserved.
机译:由于它们对储能应用的优异电化学性能,多孔碳复合电极引起了广泛的关注。在这项工作中,通过模板方法制备分层氮的多孔碳(HNPC)和α-MnO2纳米线复合电极。作为插入三维相互连接的多孔结构的一维纳米线的作为一维纳米线,在1A(-1)和优异的循环稳定性(97.2%仍然存在下,其特征在于一维纳米线,其特征在于插入三维互连的多孔结构。(97.2%),具有高比电容为204.6fg(-1)(97.2% 5000次循环)。此外,基于HNPC // HNPC / MNO2的制造的不对称超级电容器实现了1.8V的宽工作电压窗口,高能量密度高达30.1WH kg(-1)的功率密度为900.0wkg(-1)。结果表明,具有优异电化学性能的HNPC / MNO2复合电极在超级电容器应用中具有令人前景的透视图。 (c)2019 Elsevier B.v.保留所有权利。

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