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
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.
引用
收藏
页码:1695 / 1697
页数:3
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