ELECTRICAL-CONDUCTIVITY OF A SINGLE MICROGRAPHITIC CARBON-FIBER WITH A HIGH SURFACE-AREA UNDER VARIOUS ATMOSPHERES

被引：20

作者：

IMAI, J ^{[1
]}

KANEKO, K ^{[1
]}

机构：

[1] CHIBA UNIV,FAC SCI,DEPT CHEM,CHIBA 263,JAPAN

来源：

LANGMUIR | 1992年 / 8卷 / 07期

关键词：

D O I：

10.1021/la00043a002

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The temperature and frequency dependencies of the electrical conductivity of a single microporous carbon fiber with a high surface area were determined from 150 to 303 K in the frequency range 20 Hz-1 MHz. The effects of gas adsorption of O2, NO, N2O, SO2, and H2O on the electrical conductivity were also examined. O2 exposure enhanced the conductivity, indicating that the charge carrier is a hole. SO2 adsorption also increased the conductivity, while NO adsorption decreased it. The electrical conductivity change upon gas adsorption was closely associated with the electron affinity of the adsorbate molecule.

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页码：1695 / 1697

页数：3

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