Manganese oxide electrochemical capacitor with potassium poly(acrylate) hydrogel electrolyte

被引：82

作者：

Lee, Kuang-Tsin ^{[1
]}

Wu, Nae-Lih ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Chem Engn, Taipei 106, Taiwan

来源：

JOURNAL OF POWER SOURCES | 2008年 / 179卷 / 01期

关键词：

electrochemical capacitor; MnO2; gel electrolyte; potassium poly(acrylate);

D O I：

10.1016/j.jpowsour.2007.12.057

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 gel electrolyte has for the first time been successfully applied to the MnO2 nH(2)O-based pseudocapacitive electrochemical capacitors (ECs). The gel electrolyte is made of potassium poly(acrylate) (PAAK) polymer and aqueous solution of KCl. With the selected composition, PAAK:KCl:H2O = 9.0%:6.7%:84.3% by weight, the gel shows no fluidity, possessing an ionic conductivity in the order of 10(-1) S cm(-1). The gel electrolyte has been found to give substantially higher specific capacitances than those in the liquid electrolyte with the same salt (KCl) composition (1 M) and high power capability (> 10 kW/kg). (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：430 / 434

页数：5

共 22 条

[1] Investigation of thin sputtered Mn films for electrochemical capacitors [J].

Broughton, JN ;

Brett, MJ .

ELECTROCHIMICA ACTA, 2004, 49 (25) :4439-4446

[2] Cross-linked polymer hydrogel electrolytes for electrochemical capacitors [J].

Choudhury, NA ;

Shukla, AK ;

Sampath, S ;

Pitchumani, S .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2006, 153 (03) :A614-A620

[3] TRANSITION FROM SUPERCAPACITOR TO BATTERY BEHAVIOR IN ELECTROCHEMICAL ENERGY-STORAGE [J].

CONWAY, BE .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1991, 138 (06) :1539-1548

[4] The role and utilization of pseudocapacitance for energy storage by supercapacitors [J].

Conway, BE ;

Birss, V ;

Wojtowicz, J .

JOURNAL OF POWER SOURCES, 1997, 66 (1-2) :1-14

[5]

CONWAY BE, 1999, ELECTROCHEMICAL SUPE, P384

[6] Ideal capacitive behavior of hydrous manganese oxide prepared by anodic deposition [J].

Hu, CC ;

Tsou, TW .

ELECTROCHEMISTRY COMMUNICATIONS, 2002, 4 (02) :105-109

[7] ELECTRIC DOUBLE-LAYER CAPACITORS WITH NEW GEL ELECTROLYTES [J].

ISHIKAWA, M ;

IHARA, M ;

MORITA, M ;

MATSUDA, Y .

ELECTROCHIMICA ACTA, 1995, 40 (13-14) :2217-2222

[8] Nickel/metal hydride cells using an alkaline polymer gel electrolyte based on potassium salt of crosslinked poly(acrylic acid) [J].

Iwakura, C ;

Furukawa, N ;

Ohnishi, T ;

Sakamoto, K ;

Nohara, S ;

Inoue, H .

ELECTROCHEMISTRY, 2001, 69 (09) :659-663

[9] A new class of alkaline polymer gel electrolyte for carbon aerogel supercapacitors [J].

Kalpana, D. ;

Renganathan, N. G. ;

Pitchumani, S. .

JOURNAL OF POWER SOURCES, 2006, 157 (01) :621-623

[10] Principles and applications of electrochemical capacitors [J].

Kötz, R ;

Carlen, M .

ELECTROCHIMICA ACTA, 2000, 45 (15-16) :2483-2498

← 1 2 3 →