Carbon material for electrodes and process for preparing it

Details Carbon material for electrodes and process for preparing it Carbon material for electrodes and process for preparing it

1992-11-04

1995-02-21

Turner, A. A.

Stock material or miscellaneous articles

Self-sustaining carbon mass or layer with impregnant or...

204294, 252502, 313348, 313336, 313341, 4283122, 4283186, 4283191, 445 46, 445 51, G01N 2730

Patent

active

053914333

ABSTRACT:
A carbon material for electrodes which is a graphite/glass like carbon composite material having a structure in which the crystals of the graphite are oriented in one direction in the matrix of the glass like carbon so as to possess an electrode reaction activity inherent in the graphite crystals, having a maximum pore diameter of 150 .ANG. or less, and having electrolyte non-penetrative properties substantially corresponding to those of the glass like carbon; and a process for preparing a carbon material for electrodes which comprises the steps of highly dispersing, composing and orienting a graphite fine powder of the sufficiently grown crystals in an organic substance which can leave a glass like and less graphitizable carbon when calcined in a non-oxidizing atmosphere, and then calcining and carbonizing the composition. The carbon material of the present invention permits applying both current and voltage to biological systems, has no toxicity, such mechanical strength as to permit detecting a trace portion and reproducibility, can measure an electrode reaction stably, and is inexpensive.

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Takamasa Kawakubo et al., "Electrochemical Behavior of Carbon Microelectrodes Prepared by Using Graphite/Carbon Composite", Tanso 152:106-114, (1992).

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