Development of a 4.2 V aqueous hybrid electrochemical capacitor based on MnO2 positive and protected Li negative electrodes

被引：51

作者：

Shimizu, Wataru ^{[1
]}

Makino, Sho ^{[1
]}

Takahashi, Keita ^{[2
]}

Imanishi, Nobuyuki ^{[2
]}

Sugimoto, Wataru ^{[1
]}

机构：

[1] Shinshu Univ, Fac Text Sci & Technol, Ueda, Nagano 3868567, Japan

[2] Mie Univ, Fac Engn, Tsu, Mie 5148507, Japan

来源：

JOURNAL OF POWER SOURCES | 2013年 / 241卷

基金：

日本科学技术振兴机构;

关键词：

Electrochemical capacitor; Hybrid capacitor; Manganese oxide; Protected lithium anode; CHARGE-STORAGE PROPERTIES; MANGANESE OXIDE; ENERGY-STORAGE; SUPERCAPACITORS; DIOXIDE; ANODE; ELECTROLYTES; DEPOSITION; GRAPHITE; BATTERY;

D O I：

10.1016/j.jpowsour.2013.05.003

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：

An aqueous hybrid electrochemical capacitor consisting of a capacitive manganese oxide (MnO2) positive electrode and a water-stable, protected Li negative electrode in near-neutral aqueous electrolyte (1.0 M Li2SO4, pH = 5.5) is demonstrated. Galvanostatic charge/discharge cycling tests were conducted with pouched cells, offering a cell voltage of 4.2 V with maximum specific energy of 753 W h kg(-1) based on the positive electrode. The combination of a pseudocapacitive MnO2 positive and a Li negative electrode offers high specific charge and cell voltage, resulting in an aqueous hybrid electrochemical capacitor having exceptionally high specific energy. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：572 / 577

页数：6

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