Surface free energy and chemical bonding of fluorine-graphite intercalation compounds
Surface free energy and chemical bonding of fluorine-graphite intercalation compounds
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氟石墨层间化合物的表面自由能和化学键合
DOI：
10.1016/s0022-1139(00)82819-5
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发表时间：
1992
影响因子：
1.9
通讯作者：
M. Touma
中科院分区：
文献类型：
--
作者：
T. Nakajima;M. Touma
得到了氟-石墨层间化合物CxF的表面自由能、电导率和碳与氟之间的电荷转移，并讨论了CxF防止阳极效应的机理。结果表明，CxF对离子KF·2Hf熔体的润湿性不仅高于具有共价C--F键的氟化石墨，而且比石墨本身具有更高的润湿性。在第二阶段或更高阶段，CxF的电导率远高于原始热解石墨。CxF的这些性质是由碳到氟的电子转移所带来的，在高电流密度下进行KF·2Hf熔体的电解时，在碳阳极上产生了有利的条件。
Surface free energy, electrical conductivity and charge transfer between carbon and fluorine have been obtained for the fluorine-graphite intercalation compound, CxF, and the mechanism of anode effect prevention by CxF is discussed. It has been found that CxF has higher wettability by ionic KF·2HF melt than not only graphite fluoride with a covalent CF bond but also graphite itself. The electrical conductivity of CxF is much higher than that of pristine pyrolytic graphite at stage II or higher. These properties of CxF are brought about by electron transfer from carbon to fluorine, and give rise to favorable conditions at the carbon anode whilst carrying out the electrolysis of a KF·2HF melt at a high current density.