Aqueous hybrid electrochemical capacitors with ultra-high energy density approaching for thousand-volts alternating current line filtering

被引：26

作者：

Li, Zhou ^{[1
,2
]}

Wang, Xiaopeng ^{[1
]}

Zhao, Lingyu ^{[1
]}

Chi, Fengyao ^{[3
]}

Gao, Chang ^{[2
]}

Wang, Ying ^{[2
]}

Yan, Mengdan ^{[1
]}

Zhou, Qian ^{[1
]}

Zhao, Miaomiao ^{[1
]}

Wang, Xinyang ^{[1
]}

Wang, Jiaqi ^{[2
]}

Yuan, Man ^{[2
]}

Wu, Mingmao ^{[4
]}

Wang, Lixia ^{[1
]}

Zhao, Yang ^{[2
]}

Qu, Liangti ^{[3
]}

机构：

[1] Henan Agr Univ, Coll Sci, Zhengzhou 450002, Henan, Peoples R China

[2] Beijing Inst Technol, Sch Chem & Chem Engn, Key Lab Cluster Sci, Minist Educ China, Beijing 100081, Peoples R China

[3] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

[4] Fuzhou Univ, Coll Mat Sci & Engn, Key Lab Ecomat Adv Technol, Fuzhou 350108, Peoples R China

来源：

NATURE COMMUNICATIONS | 2022年 / 13卷 / 01期

基金：

国家重点研发计划;

关键词：

DOUBLE-LAYER CAPACITOR; BLACK SUPERCAPACITORS; FREQUENCY-RESPONSE; CARBON NANOTUBES; FILMS;

D O I：

10.1038/s41467-022-34082-2

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

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 V-2 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.

引用

页数：11

共 41 条

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