Preparation of spherical activated carbon with high electric double-layer capacitance

被引：34

作者：

Lee, SI ^{[1
]}

Mitani, S ^{[1
]}

Yoon, SH ^{[1
]}

Korai, Y ^{[1
]}

Mochida, I ^{[1
]}

机构：

[1] Kyushu Univ, Inst Adv Mat Study, Fukuoka 8168580, Japan

来源：

CARBON | 2004年 / 42卷 / 11期

关键词：

carbon microbeads; activation; BET surface area; electrochemical properties;

D O I：

10.1016/j.carbon.2004.03.026

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：

The preparation of optically anisotropic spherical carbon from coal-based isotropic pitch was investigated. NaOH and KOH were used as activating agents. Spherical carbon with or without pre-calcination was mixed with four times the amount of NaOH and KOH by weight. Capacitance was measured at 25°C in a two electrode system using 1 M Et4NBF4 in propylene carbonate as an electrolyte. The result shows that the high density and moderate reactivity of anisotropy spherical carbon balanced by the pre-calcination and moderate activation with NaOH was indicated in the high capacitance per volume.

引用

页码：2332 / 2334

页数：3

共 11 条

[1] Theory of Ragone plots [J].

Christen, T ;

Carlen, MW .

JOURNAL OF POWER SOURCES, 2000, 91 (02) :210-216

[2] INTERCALATION COMPOUNDS OF GRAPHITE [J].

DRESSELHAUS, MS ;

DRESSELHAUS, G .

ADVANCES IN PHYSICS, 1981, 30 (02) :139-326

[3] Capacitance and pore-size distribution in aqueous and nonaqueous electrolytes using various activated carbon electrodes [J].

Endo, M ;

Maeda, T ;

Takeda, T ;

Kim, YJ ;

Koshiba, K ;

Hara, H ;

Dresselhaus, MS .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (08) :A910-A914

[4] A characteristic of alkaline activated mesophase based carbon for electrochemical capacitor [J].

Fujino, T ;

Oyama, S ;

Oki, N ;

Noguchi, M ;

Sato, K ;

Endo, M ;

Kim, YJ .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 2002, 388 :481-488

[5]

MITANI S, 2002, PERFORMANCE IMPROVEM, P178

[6] Capacitors: Operating principles, current market and technical trends [J].

Nishino, A .

JOURNAL OF POWER SOURCES, 1996, 60 (02) :137-147

[7]

NISHINO A, 2003, TECHNOLOGIES MAT EDC, V2, P129

[8] Studies of activated carbons used in double-layer capacitors [J].

Qu, DY ;

Shi, H .

JOURNAL OF POWER SOURCES, 1998, 74 (01) :99-107

[9] Performance of electric double-layer capacitors using carbons prepared from phenol-formaldehyde resins by KOH etching [J].

Teng, HS ;

Chang, YJ ;

Hsieh, CT .

CARBON, 2001, 39 (13) :1981-1987

[10] Microstructure of mesocarbon microbeads prepared from synthetic isotropic naphthalene pitch in the presence of carbon black [J].

Wang, YC ;

Egashira, M ;

Ishida, S ;

Korai, Y ;

Mochida, I .

CARBON, 1999, 37 (02) :307-314

← 1 2 →