超微粉石墨层间化合物CuCl_2-NiCl_2-GICs合成及电学性能

Synthesis and Electrical Property of the SuperfineGraphite CuCl_2NiCl_2 Intercalation Compounds

常规的ＧＩＣｓ合成原料均采用合成石墨或者粒度较粗的天然石墨，这里采用超微粉石墨作原料，进行受主金属氯化物ＣｕＣｌ２－ＮｉＣｌ２－ＧＩＣ的合成研究。使用山东南墅石墨（３０００目）、Ｃｕ－Ｃｌ２和ＮｉＣｌ２（５ｎ：０．５∶０．５摩尔比），在５２８℃、真空度１０．３Ｐａ条件下，得到超微粉的ＣｕＣｌ２－ＮｉＣｌ２－ＧＩＣｓ，ＳＴＥＭ单原子能谱扫描结果显示出铜离子和镍离子分布基本均匀。合成的１，２，３和４阶ＧＩＣｓ的电导率分别为１．５３６×１０４，１．６３８×１０４，３．７７３×１０４，和５．７２７×１０４。而石墨原料的电导率为１．８５１×１０４，从整体来看合成的ＧＩＣｓ的电导率是石墨原料的０．８－３倍。对比合成的ＧＩＣｓ的电导率发现，阶数不同，电导率不同，并且随着阶数的升高，电导率增大。

Usualy, The pristine of GIC s is manmade graphite or natural graphite of bigger particles. In this article, the superfine graphite is used to synthsize the acceptor GIC of CuCl_2NiCl_2. The mole ratio of graphite: CuCl_2∶NiCl_2 is 5n∶0.5∶0.5. According to the X-ray energy scanning spectra of Cu and Ni monoatom, the product is even in chemical composition. The electrical conductivity of 1-,2-,3-,4-stage GIC s products are 1.536×10.4,1.638×10.4,3.773×10.4,和5.727×10.4, which is as 0.8-3 time as the pristine graphite (1.851×10.4). When the stage increase from 1 to 4, their conductivity increase too. The conductivity of 3, 4-stageGIC s are higher than that of the pristine. But conductivity of the 1-, 2-stage is lower than that of pristine.