新製程DPG石墨吸附電解質分解之氣體及其提昇鋰離子二次電池性能之研究(Ⅱ)-由高速恒電位儀吸氫量測解析DPG
Date Issued
2003
Date
2003
Author(s)
李源弘
DOI
912212E002088
Abstract
The material investigated on this study is artificial graphite included boron fabricated by
DPG process. The boron-triggering mechanochemical effect and physical properties of artificial
graphite cleaned by HCl were studied. And the performance of lithium ion secondary battery
using artificial graphite as anodic material was also estimated. At last, the relationship between
hydrogen content and carbon nanotube was evaluated by cyclic voltammetry.
From the experimental results of XRD analysis、Rietveld Method refinement and Raman
spectra analysis, artificial graphite cleaned by HCl owns better crystallization and higher
graphitization. These two results increased the battery performance, such as high energy
density、high coulomb efficiency and long charge-discharge cycles. For example, BH300 has the
highest energy density 505mAh/g. Besides, cyclic voltammetry revealed that the electric flux of
BH300 and BH1000 during reduction was much more than other artificial graphite, and more
electric flux can be explained that more hydrogen content was resulted from by carbon nanotube.
This study proved that HCl cleaning treatment indeed improved the physical properties of
artificial graphite. And hydrogen content of carbon nanotube can be evaluated by cyclic
voltammetry. For lithium ion secondary battery, artificial graphite is a good candidate for material
of cathode.
Subjects
artificial graphite
boron-triggering mechanochemical effect
hydrogen content
3
lithium ion secondary battery
lithium ion secondary battery
cyclic voltammetry
Publisher
臺北市：國立臺灣大學材料科學與工程學研究所
Type
report
File(s)![Thumbnail Image]()
Loading...
Name
912212E002088.pdf
Size
152.61 KB
Format
Adobe PDF
Checksum
(MD5):ab62d6afd5aa18fe15d35fbe88a4c59a