Why Carbon Monoliths are Better Supercapacitor Electrodes than Compacted Pellets

被引：26

作者：

Garcia-Gomez, A. ^{[1
]}

Miles, P. ^{[1
]}

Centeno, T. A. ^{[2
]}

Rojo, J. M. ^{[1
]}

机构：

[1] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

[2] CSIC, Inst Nacl Carbon, Oviedo 33011, Spain

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2010年 / 13卷 / 08期

关键词：

electrical conductivity; electrical resistivity; electrochemical electrodes; monolithic integrated circuits; porous materials; supercapacitors; DOUBLE-LAYER CAPACITANCE; ELECTROCHEMICAL CHARACTERISTICS; AEROGEL ELECTRODES; MESOPOROUS CARBON; PORE STRUCTURE; CONDUCTIVITY;

D O I：

10.1149/1.3436662

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Cylindrical carbon monoliths (7 mm in diameter and 3.9 mm in height) with a microporous structure and compacted pellets derived from the monoliths with the same mass and similar geometric dimensions (6 mm in diameter and 3.2 mm in height) are studied as electrodes in two-electrode supercapacitor cells. The monolith cell shows better electrochemical behavior than the pellet cell, as deduced from its higher capacitance, lower resistance, and shorter response time. The specific capacitance of carbon in monoliths (150 F g(-1)) is compared to that in pellets (123 F g(-1)) and discussed. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3436662] All rights reserved.

引用

页码：A112 / A114

页数：3

共 18 条

[1] Investigation of electrochemical double-layer (ECDL) capacitors electrodes based on carbon nanotubes and activated carbon materials [J].

Emmenegger, C ;

Mauron, P ;

Sudan, P ;

Wenger, P ;

Hermann, V ;

Gallay, R ;

Züttel, A .

JOURNAL OF POWER SOURCES, 2003, 124 (01) :321-329

[2] High capacity supercapacitors based on modified activated carbon aerogel [J].

Fang, B ;

Wei, YZ ;

Maruyama, K ;

Kumagai, M .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 2005, 35 (03) :229-233

[3] PPO15-PEO22-PPO15 block copolymer assisted synthesis of monolithic macro- and microporous carbon aerogels exhibiting high conductivity and remarkable capacitance [J].

Gutierrez, Maria C. ;

Pico, Fernando ;

Rubio, Fausto ;

Amarilla, J. Manuel ;

Palomares, F. Javier ;

Ferrer, Maria L. ;

del Monte, Francisco ;

Rojo, Jose M. .

JOURNAL OF MATERIALS CHEMISTRY, 2009, 19 (09) :1236-1240

[4] Preparation of carbon aerogel electrodes for supercapacitor and their electrochemical characteristics [J].

Kim, SJ ;

Hwang, SW ;

Hyun, SH .

JOURNAL OF MATERIALS SCIENCE, 2005, 40 (03) :725-731

[5] Electric double-layer capacitance of microporous carbon nano spheres prepared through precipitation of aromatic resin pitch [J].

Lee, SI ;

Mitani, S ;

Park, CW ;

Yoon, SH ;

Korai, Y ;

Mochida, I .

JOURNAL OF POWER SOURCES, 2005, 139 (1-2) :379-383

[6] Studies on preparation and performances of carbon aerogel electrodes for the application of supercapacitor [J].

Li, Jun ;

Wang, Xianyou ;

Huang, Qinghua ;

Gamboa, Sergio ;

Sebastian, P. J. .

JOURNAL OF POWER SOURCES, 2006, 158 (01) :784-788

[7] Correlation of double-layer capacitance with the pore structure of sol-gel derived carbon xerogels [J].

Lin, C ;

Ritter, JA ;

Popov, BN .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (10) :3639-3643

[8] Understanding carbon-carbon composites as electrodes of supercapacitors -: A study by AC and DC measurements [J].

Pico, Fernando ;

Pecharroman, Carlos ;

Anson, Alejandro ;

Martinez, M. Teresa ;

Rojo, Jose M. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2007, 154 (06) :A579-A586

[9] Nanostructured mesoporous carbon as electrodes for supercapacitors [J].

Prabaharan, S. R. S. ;

Vimala, R. ;

Zainal, Zulkarnian .

JOURNAL OF POWER SOURCES, 2006, 161 (01) :730-736

[10] An activated carbon monolith as an electrode material for supercapacitors [J].

Ruiz, V. ;

Blanco, C. ;

Santamaria, R. ;

Ramos-Fernandez, J. M. ;

Martinez-Escandell, M. ;

Sepulveda-Escribano, A. ;

Rodriguez-Reinoso, F. .

CARBON, 2009, 47 (01) :195-200

← 1 2 →