Novel semiconducting CdSe quantum dot based electrochemical capacitors

被引：13

作者：

Bae, Joonho ^{[1
]}

Paik, Ungyu ^{[2
]}

Yi, Dong Kee ^{[3
]}

机构：

[1] Gachon Univ, Dept Nanophys, Songnam 461701, Gyeonggi Do, South Korea

[2] Hanyang Univ, WCD Dept Energy Engn, Seoul 133791, South Korea

[3] Myongji Univ, Dept Chem, Yongin 449728, South Korea

来源：

MATERIALS LETTERS | 2016年 / 162卷

基金：

新加坡国家研究基金会;

关键词：

CdSe; Quantum dots; Supercapacitors; SUPERCAPACITORS; DEVICES;

D O I：

10.1016/j.matlet.2015.10.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

For the first time, we report on novel electrochemical capacitors using semiconducting CdSe quantum dots (QDs) as electrodes. Semiconducting QDs with two colors (red, orange) possessing high quantum yield were deposited on transparent ITO substrates to form electrodes of the electrochemical supercapacitors. The two kinds of QDs demonstrated typical capacitive cyclic voltammetry behavior in 2 M H2SO4 aqueous solution. Red QDs demonstrated higher mass-specific capacitance (over 10-fold) compared to orange QDs. Red QDs exhibited stable cycle stability and low internal resistance. Our study demonstrated semiconductor CdSe QDs can be incorporated to high-performance supercapacitors. These novel electrode materials of QDs can pave new way to QD-based energy storage devices or electrochemical sensors. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：230 / 234

页数：5

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