摘要
将 GICs形成过程划分为熔融、活化、扩散和成键等阶段 ,分析了各阶段反应的主要影响因素 ,以氯化铜、氯化镍 GICs的合成实验为基础 ,根据 SEM对石墨膨胀前后、插层前后的形貌分析 ,以及膨胀石墨合成 GICs反应前后体积变化分析 ,认为 GICs的形成过程中 ,主要有三个机制起作用 :氯化物扩散机制、氯化物和碳原子层之间离子键牵引机制和石墨碳原子层分子键牵引回复机制。在膨胀石墨 GICs的合成过程中 ,除占主导地位的扩散机制外 ,还存在化学键牵引机制 ,主要包括碳原子间分子键牵引和碳原子氯化物之间的离子键牵引。
After dividing the formation of the graphite intercalation compounds into four periods: melting, activating, scattering and bond forming stages, actors affecting the intercalation reaction in each period were analysed. Based on synthesis experiment of the CuCl 2, NiCl 2 GICs, changes of the appearance and volume of the graphite after and before expanding and intercalation were analysed. It is suggested that there are three mechanism: the chloride scattering mechanism, the ionic bond dragging mechanism between the cupric chloride and the graphite plane, and the graphite plane recovering mechanism. Beside of main mechanism of the scattering, the ionic dragging mechanism, which includes the molecular force between the graphite layers and ionic bonding dragging mechanism, affects the intercalating reaction in the expanded graphite.
出处
《新型炭材料》
SCIE
EI
CAS
CSCD
2000年第1期52-56,共5页
New Carbon Materials
基金
中国地质大学 (北京 )国家矿物岩石材料开发开放实验室开放基金! ( No.980 0 5)
中国博士后科学基金项目资助
国家自然科学基金!
