管(容器)
电容器
电极
材料科学
图层(电子)
直线(几何图形)
碳纤维
电气工程
复合材料
电压
工程类
化学
几何学
复合数
数学
物理化学
作者
Gan Chen,Fangming Han,Dou Lin,Shiping Zhang,Qijun Pan,Chen Shao,Zhaoming Wang,Xiaoguang Zhu,Guowen Meng,Bingqing Wei
出处
期刊:Joule
[Elsevier]
日期:2024-04-01
卷期号:8 (4): 1080-1091
标识
DOI:10.1016/j.joule.2024.01.026
摘要
Summary
Electric double-layer capacitors (EDLCs) have the potential to replace aluminum electrolytic capacitors for alternating current line-filtering, aligning with the trend of device miniaturization. However, it is challenging for EDLCs to simultaneously achieve rapid ion migration, electrical response, and high areal and volumetric capacitances. Here, we demonstrate that three-dimensional, structurally integrated multi-layer carbon tube (3D-MLCT) frameworks are used as electrodes for high-performance filtering EDLCs. By simply increasing the number of tube layers, a high specific areal capacitance of 3.08 mF cm−2 at 120 Hz is achieved with a phase angle of −80.1°, exhibiting excellent capacitance and fast frequency response. The outstanding performance of the 3D-MLCT is attributed to the high density, high orientation, and high integrality of carbon tube arrays that facilitate and accelerate ion distribution onto the electrode surface. The findings of this work provide a solution for developing next-generation miniaturized filter capacitors with high capacitance and fast frequency response.
科研通智能强力驱动
Strongly Powered by AbleSci AI