电容器
电解电容器
材料科学
电容
电压
储能
聚合物电容器
伏特
电流密度
薄膜电容器
光电子学
电气工程
电极
化学
物理
功率(物理)
量子力学
工程类
物理化学
作者
Zhou Li,Xiaopeng Wang,Lingyu Zhao,Fengyao Chi,Chunqing Gao,Ying Wang,Mengdan Yan,Qian Zhou,Miaomiao Zhao,Xinyang Wang,Jiaqi Wang,Man Yuan,Mingmao Wu,Lixia Wang,Yang Zhao,Liangti Qu
标识
DOI:10.1038/s41467-022-34082-2
摘要
Filtering capacitors with wide operating voltage range are essential for smoothing ripples in line-powered system, which are still unsatisfactory due to low energy density and limited working voltage scopes. Herein, we report an aqueous hybrid electrochemical capacitor with areal specific energy density of 1.29 mF V2 cm-2 at 120 Hz, greater than common aqueous ones. Interestingly, it can be easily integrated at scale to show excellent flexibility, controllable and stable filtering performance, in which an integrated device (e.g., seven units in series) exhibits fluctuation of 96 mV, 10 times smaller than an aluminum electrolytic capacitor with similar capacitance. A record-high 1,000 V can also be achieved after integrating 670 units, exceeding those reported so far, and about 1.5 times of commercial bulk aluminum electrolytic capacitors (~700 V). This work opens up a new insight for promising applications in multiple electricity transmission systems that requiring high smoothness under harsh voltage.
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