A symmetric carbon/carbon supercapacitor operating at 1.6 V by using a neutral aqueous solution

被引：400

作者：

Demarconnay, L. ^{[1
]}

Raymundo-Pinero, E. ^{[1
]}

Beguin, F. ^{[1
]}

机构：

[1] CNRS Univ, Ctr Rech Matiere Divisee, F-45071 Orleans, France

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 10期

关键词：

Symmetric supercapacitor; Aqueous neutral electrolyte; Activated carbon; High voltage; Cycle life; CARBON; PERFORMANCE; CAPACITOR; MECHANISM; STORAGE;

D O I：

10.1016/j.elecom.2010.06.036

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A high voltage symmetric carbon/carbon supercapacitor was built using a Na2SO4 aqueous solution. This system exhibits an excellent cycle life during thousands of cycles up to voltage values as high as 1.6 V. Three-electrode investigations show a particularly high potential window,Delta E = 2 V. for the considered activated carbon in Na2SO4. However, in a two-electrode cell, when the voltage is higher than 1.6 V. the potential of the positive electrode is beyond the oxidation potential of water, and AC is oxidized. These results demonstrate the potentialities of Na2SO4 for developing high energy density systems. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1275 / 1278

页数：4

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