李源弘2006-07-252018-06-282006-07-252018-06-282004http://ntur.lib.ntu.edu.tw//handle/246246/12462本實驗室所自行研發之製程，包含富勒烯(fullerenes) 與碳微管(carbon nanotube)的複合物。其條件由所做過之實驗數據分析，在融熔鐵中的硼含量達0～5000ppm時，會有碳微管出現。 而此特殊結構物會吸附電解液所產生的大量氣體，降低內壓以避免發生危險;另一方面，以實驗室學長所用之電化學分析方法，進行局部瞬間電流分析(高速恒電儀)，並配合RCN(Random Covalent Network)模式進行氫含量評估。以及搭配偏光顯微鏡形態組織觀察求其面積分率，建立氫含量與面積分率校正線。這一系列之研究，已有初步之成果。 同時為了達到提升鋰離子二次電池之機能性與吸氫量，將計畫使碳石墨材料中之碳微管分離純化，因此以碳微管經過氟化後產生氟化碳微管，利用氟化碳微管表面張力減低現象，與其他材料黏度不同之原理，使其高速離心。離心後收集氟化碳微管，再利用有機溶劑來吸附氟原子，而得到高純度之奈米碳微管(Carbon Nanotube)，進而利用此高純度奈米碳微管製備鋰離子二次電池，使此奈米碳微管的特性得以展現，使得本實驗室所製備之鋰離子二電池能量密度更高、使用壽命更長。By the process which we explored, we can obtain the compound which contains fullerences and carbon nanotube. From our experimental results, we found carbon nanotube will be produced when the amount of boron in melting iron is in a range of 0~5000 ppm. This special nanostructure will adsorb a large amount of gas produced from the electrolysis to decrease pressure. From the other side, we used the electrochemical analysis to estimate the hydrogen content corresponding to RCN (Random Covalent Network) model. In addition, we observed the morphology and obtained the area fraction of hydrogen content by polarized light microscope, and established the calibration line of hydrogen content and area fraction. Then, we got primary results. At the same time, in order to promote the functionality of Li-ion rechargeable battery and increase amount of hydrogen adsorbed, we will plan to separate and purify carbon nanotube in the artificial graphite material. At first we produce carbonfluoride after fluorine gas is passing through carbon nanotube, then decrease the surface tension of carbonfluoride. After that, because of the difference of viscosity we will collect carbonfluoride after a centrifugal process with high velocity. Then, use organic solution to adsorb fluorine atoms on carbon nanotube. Finally we will get carbon nanotube with high degree of purity and use it to produce Li-ion rechargeable battery. We hope to use this method to show the characteristics of carbon nanotube and to make Li-ion rechargeable battery have higher energy density and longer using life.application/pdf668731 bytesapplication/pdfzh-TW國立臺灣大學材料科學與工程學研究所人工石墨碳微管分離純化artificial graphitecarbon nanotubepurityreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/12462/1/922212E002036.pdf