新製程DPG石墨吸附電解質分解之氣體及提昇鋰離子二次電池性能之研究(III)
Date Issued
2004
Date
2004
Author(s)
李源弘
DOI
922212E002036
Abstract
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.
Subjects
artificial graphite
carbon nanotube
purity
Publisher
臺北市：國立臺灣大學材料科學與工程學研究所
Type
report
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