Electrokinetic Supercapacitor for Simultaneous Harvesting and Storage of Mechanical Energy

被引：30

作者：

Yang, Peihua ^{[1
]}

Qu, Xiaopeng ^{[1
]}

Liu, Kang ^{[1
]}

Duan, Jiangjiang ^{[1
]}

Li, Jia ^{[1
]}

Chen, Qian ^{[1
]}

Xue, Guobin ^{[1
]}

Xie, Wenke ^{[1
]}

Xu, Zhimou ^{[1
]}

Zhou, Jun ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 09期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

supercapacitor; electrokinetic effect; energy harvesting; self-powered; mechanical energy; CONVERSION; NANOGENERATORS; ELECTRICITY; GENERATION; TRANSPORT;

D O I：

10.1021/acsami.7b18640

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Energy harvesting and storage are two distinct processes that are generally achieved using two separated parts based on different physical and chemical principles. Here we report a self-charging electrokinetic supercapacitor that directly couples the energy harvesting and storage processes into one device. The device consists of two identical carbon nanotube/titanium electrodes, separated by a piece of anodic aluminum oxide nanochannels membrane. Pressure-driven electrolyte flow through the nanochannels generates streaming potential, which can be used to charge the capacitive electrodes, accomplishing simultaneous energy generation and storage. The device stores electric charge density of 0.4 mC cm(-2) after fully charging under pressure of 2.5 bar. This work may offer a train of thought for the development of a new type of energy unit for self-powered systems.

引用

页码：8010 / 8015

页数：6

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