【摘要】 在N2保护下用熔盐法合成了FeCl₃膨胀石墨层间化合物（简称FeCl₃-EGICs）。研究表明,在FeCl3过量、360℃、12h的条件下可得到纯一阶产物;460℃、12h为纯二阶。293K时,一阶FeCl3_EGICs的电导率为7.513×106S·m-1,二阶为6.87×106S·m-1,分别是原料膨胀石墨的3.7倍和3.4倍。在293K至分解温度范围内,FeCl3_EGICs具有金属电导特性,其电阻与温度间呈线性关系,随温度升高电阻增大,其机理为声子散射。更多还原

【Abstract】 The FeCl₃ graphite intercalation compounds （FeCl₃-GICs） have aroused special attention for their highly electrical conductivity and stability. In this paper, FeCl₃-exfoliated graphite intercalation compounds （Abs. FeCl₃-EGICs） have been synthesized under the protection of nitrogen gas with the melting salt method. The experimental results show that pure stage-I FeCl₃-EGICs can be synthesized at 360℃ for 12 hours, and pure stage-II FeCls3-EGICs at 460℃ for 12 hours when FeCl₃ is excessive. In addition, the electrical conductivity of FeCl₃-EGICs was measured at different temperatures, the number of stage Ⅰ EGICs is 7.513×106S·m -1 at 297K which is 3.7 times larger than pristine exfoliated graphite, and stage Ⅱ is 6.87×106 S·m -1 at the same temperature which is 3.4 times larger. The conductance of FeCl₃-EGICs is similar to that of metals, and its electrical resistivity shows a linear relation with the temperature from 297K to decomposition temperature. The resistivity increases with temperature, with the mechanism being phonon scattering.更多还原