Low temperature water based electrolytes for MnO2/carbon supercapacitors

被引：72

作者：

Roberts, Alexander J. ^{[1
]}

de Namor, Angela F. Danil ^{[1
]}

Slade, Robert C. T. ^{[1
]}

机构：

[1] Univ Surrey, Dept Chem, Guildford GU2 7XH, Surrey, England

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2013年 / 15卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

CHARGE STORAGE MECHANISM; ELECTROCHEMICAL PROPERTIES; HYDROTHERMAL SYNTHESIS; PSEUDOCAPACITANCE PROPERTIES; ENERGY-STORAGE; MNO2; NANOTUBES; RECOMMENDATIONS;

D O I：

10.1039/c3cp50359c

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：

Birnessite nanotubes and activated carbon electrodes have been used in supercapacitor cells to assess the performance of new aqueous based electrolyte systems at temperatures as low as -30 degrees C. The addition of ethylene glycol to aqueous sodium, lithium, potassium and ammonium sulfates has resulted in electrolytes that are still in liquid phase at such low temperatures. Extensive electrochemical testing showed that in such systems, operation of these aqueous based supercapacitors is possible at -30 degrees C with a specific capacitance of over 30 F g(-1) and good cycleability.

引用

页码：3518 / 3526

页数：9

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