Electrochemical intercalation of tetraethylammonium tetrafluoroborate into KOH-treated carbon consisting of multi-graphene sheets for an electric double layer capacitor

被引:55
作者
Takeuchi, M
Koike, K
Maruyama, T
Mogami, A
Okamura, M
机构
[1] Jeol Ltd, Engn Management Div, ES Project, Akishima, Tokyo 196, Japan
[2] Okamura Lab, Minami Ku, Yokohama, Kanagawa 2320006, Japan
来源
DENKI KAGAKU | 1998年 / 66卷 / 12期
关键词
graphite-like layers; KOH-treated carbon; electrochemical intercalation; EDLC;
D O I
10.5796/kogyobutsurikagaku.66.1311
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Carbons produced by calcination at 700 similar to 850 degrees C, of the materials derived from petroleum cokes and pitches consist of well-grown graphite-like layers with an average inter-layer distance of d(infinity 2) = 0.35 similar to 0.365 nm. Additional heat treatment of the carbon with KOH at 800 degrees C can provide the expansion of inter-layer distance up to d(infinity 2) = 0.36 similar to 0.385 nm and the latent ability of electrochemical intercalation of Et4N+ and BF4- in PC into the multi-graphene layers. Using the KOH-treated carbons as electrodes of EDLC, a high-density energy store such as 25 similar to 30 F/cm(3) of dry total electrodes operating at 3.5 similar to 4.0 V is available when the depth of the cell is rigidly restricted.
引用
收藏
页码:1311 / 1317
页数:7
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