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
收藏
页码：A112 / A114
页数：3
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