Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9760301 | Journal of Power Sources | 2005 | 5 Pages |
Abstract
Effects of dopant and coating carbon nanotube on anodic performance of Si were studied for metallic anode Li ion rechargeable battery with large capacity. Although the large Li intercalation capacity higher than 1500 mAh gâ1 is exhibited on pure Si, it decreased drastically with increasing cycle number. Increasing the electrical conductivity by doping Cr or B is effective for increasing the initial capacity and the cycle stability of Si for Li intercalation. Coating semiconductive Si with the carbon nanotube by decomposition of hydrocarbon is effective for increasing the cycle stability, though the initial Li intercalation capacity slightly decreased. Conducting binder is also important for increasing the cycle stability and it was found that Li intercalation capacity higher than 1500 mAh gâ1 can be sustained by using poly vinyliden fruolide. Consequently, reversible Li intercalation capacity of 1500 mAh gâ1 was successfully sustained after 10th cycles of charge and discharge by doping Cr and coating with carbon nanotube.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Tatsumi Ishihara, Masashi Nakasu, Masaki Yoshio, Hiroyasu Nishiguchi, Yusaku Takita,