Impact of cell-voltage on energy and power performance of supercapacitors with single-walled carbon nanotube electrodes

被引：32

作者：

Izadi-Najafabadi, Ali ^{[1
]}

Yamada, Takeo ^{[1
]}

Futaba, Don N. ^{[1
]}

Hatori, Hiroald ^{[2
]}

Iijima, Sumio ^{[1
]}

Hata, Kenji ^{[1
,3
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Nanotube Res Ctr, Tsukuba, Ibaraki 3058565, Japan

[2] Natl Inst Adv Ind Sci & Technol, Project Headquarters, Tsukuba, Ibaraki 3058565, Japan

[3] Japan Sci & Technol Agcy JST, Kawaguchi, Saitama 3320012, Japan

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 12期

基金：

日本科学技术振兴机构;

关键词：

Activated carbon; Carbon nanotubes; Energy; Power; Supercapacitors; ELECTROCHEMICAL CAPACITORS; STORAGE; GROWTH; AREA;

D O I：

10.1016/j.elecom.2010.09.020

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We report the energy and power voltage-dependencies of supercapacitors using single-walled carbon nanotube electrodes. The energy density was dependent on the cell-voltage cubed (up to 4 V: E = 1.43 x V-3). The cubic relationship was attributed to the linear increase of the capacitance as a function of voltage, enabled by electrochemical doping. Furthermore, while up to 3.5 V, the maximum power rating of the nanotube electrodes increased as a function of the cell-voltage squared, beyond 3.5 V, a decline in power was observed as a result of depletion of the electrolyte's ions. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1678 / 1681

页数：4

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