All-solid-state flexible micro-supercapacitor arrays with patterned graphene/MWNT electrodes

被引：151

作者：

Yun, Junyeong ^{[1
]}

Kim, Daeil ^{[1
]}

Lee, Geumbee ^{[2
]}

Ha, Jeong Sook ^{[1
,2
]}

机构：

[1] Korea Univ, Dept Chem & Biol Engn, Seoul 131701, South Korea

[2] KU KIST Grad Sch Converging Sci & Technol, Seoul 131701, South Korea

来源：

CARBON | 2014年 / 79卷

基金：

新加坡国家研究基金会;

关键词：

HIGH-PERFORMANCE SUPERCAPACITORS; CHEMICAL-VAPOR-DEPOSITION; DOUBLE-LAYER CAPACITANCE; CARBON NANOTUBE FILMS; HIGH-POWER; ELECTROCHEMICAL CAPACITORS; ENERGY DENSITY; LARGE-AREA; TRANSPARENT; STORAGE;

D O I：

10.1016/j.carbon.2014.07.055

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report on the fabrication of all-solid-state flexible micro-supercapacitor (MSC) arrays with electrodes consisting of patterned multilayer graphene (MG) and functionalized multi-walled carbon nanotubes (MWNTs), and polyvinyl alcohol (PVA)-H3PO4 gel electrolyte. The fabricated MSC exhibited areal capacitance of 2.54 mF/cm(2) at a scan rate of 10 mV/s, which is similar to 150 times higher than that of MSC with MG electrode. The areal energy and power density were also dramatically improved via using MG/MWNT electrodes. In addition, there was no deterioration of the electrical performance over repetitive convex and concave bending with a bending radius of 2.3 mm. Furthermore, both the output voltage and the total capacitance of the MSC could be controlled via the serial or parallel connection of multiple planar-type MSCs to operate high-voltage light-emitting diodes. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：156 / 164

页数：9

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