Claims
- 1. A lithium secondary battery comprising a positive electrode, a negative electrode, and a separator and electrolyte provided between said positive electrode and said negative electrode, wherein said negative electrode is made of crystalline carbon particles and a metal which forms an alloy with lithium, said crystalline carbon particles having an average particle size of 1-20 .mu.m, and said metal forming an alloy with lithium having a particle size not more than 1000 .ANG..
- 2. A lithium secondary battery according to claim 1, wherein said crystalline carbon particles have a face-to-face dimension (d.sub.002) by an X-ray diffraction method which is 3.354-3.369 .ANG., and a crystal grain size (Lc) in a C-axis direction which is not smaller than 300 .ANG..
- 3. A lithium secondary battery according to claim 1, wherein said metal forming an alloy with lithium is Ag.
- 4. A lithium secondary battery according to claim 1, wherein said metal forming an alloy with lithium comprises at least one element selected from the group consisting of Al, Sb, B, Ba, Bi, Cd, Ca, Ga, In, Ir, Ge, Pb, Hg, Si, Ag, Sr, Te, Tl and Sn.
- 5. A lithium secondary battery according to claim 1, wherein said metal forming an alloy with lithium comprises at least one element selected from the group consisting of Ag, Sn and Bi.
- 6. A lithium secondary battery according to claim 1, wherein said metal forming an alloy with lithium is contained in said negative electrode in an amount not greater than 30 weight %.
- 7. A lithium secondary battery according to claim 1, wherein said metal forming an alloy with lithium is contained in said negative electrode in an amount from 1 weight % to 10 weight %.
- 8. A lithium secondary battery according to claim 1, wherein said metal forming an alloy is dispersed in said crystalline carbon particles and is enriched at an end face portion of said crystalline carbon particles.
Priority Claims (1)
Number |
Date |
Country |
Kind |
7-015676 |
Feb 1995 |
JPX |
|
Parent Case Info
This is a continuation of application Ser. No. 08/595,246, filed Feb. 1, 1996, now abandoned.
US Referenced Citations (6)
Number |
Name |
Date |
Kind |
5187035 |
Miyabayashi et al. |
Feb 1993 |
|
5370711 |
Audit et al. |
Dec 1994 |
|
5401598 |
Miyabayashi et al. |
Mar 1995 |
|
5501292 |
Kawashima et al. |
Mar 1996 |
|
5549172 |
Mutoh et al. |
Aug 1996 |
|
5656394 |
Koksbang et al. |
Aug 1997 |
|
Foreign Referenced Citations (6)
Number |
Date |
Country |
2-121258 |
May 1990 |
JPX |
4-259764 |
Sep 1992 |
JPX |
5-82171 |
Apr 1993 |
JPX |
5-286763 |
Nov 1993 |
JPX |
6-318454 |
Nov 1994 |
JPX |
6-349482 |
Dec 1994 |
JPX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
595246 |
Feb 1996 |
|