Claims
- 1. A lithium secondary battery comprising:an anode comprising, as active material, lithium metal, lithium alloy or a material capable of absorbing and desorbing at least lithium ions; a cathode comprising spinel-structured lithium-manganese complex oxide as an active material, the spinel-structured lithium-manganese complex oxide being in the form of hollow, spherical particle sinters of single crystal primary particles; and an electrolyte.
- 2. The lithium secondary battery according to claim 1, wherein the single crystal particles have an average diameter of from about 70 to 500 nm.
- 3. The lithium secondary battery according to claim 2, wherein the spinel-structured lithium-manganese complex oxide is represented by the formulaLi(Mn2-xLix)O4 where 0≦x≦0.1.
- 4. The lithium secondary battery according to claim 3, wherein 0<x≦0.1.
- 5. The lithium secondary battery according to claim 2, wherein the spinel-structured lithium-manganese complex oxide is represented by the formulaLi(Mn2-x-yAyLix)O4 where 0≦x+y≦0.1 and A is selected from the group consisting of Cr, Ni, Fe, Co and Mg.
- 6. The lithium secondary battery according to claim 2, wherein the electrolyte is a separator containing non-aqueous electrolytic solution or solid-state electrolyte.
- 7. The lithium secondary battery according to claim 1, wherein the spinel-structured lithium-manganese complex oxide is represented by the formulaLi(Mn2-xLix)O4 where 0≦x≦0.1.
- 8. The lithium secondary battery according to claim 7, wherein 0<x≦0.1.
- 9. The lithium secondary battery according to claim 1, wherein the spinel-structured lithium-manganese complex oxide is represented by the formulaLi(Mn2-x-yAyLix)O4 where 0≦x+y≦0.1 and A is selected from the group consisting of Cr, Ni, Fe, Co and Mg.
- 10. The lithium secondary battery according to claim 1, wherein the electrolyte is a separator containing non-aqueous electrolytic solution or solid-state electrolyte.
- 11. A lithium secondary battery comprising:an anode comprising, as active material, lithium metal, lithium alloy or a material capable of absorbing and desorbing at least lithium ions; a cathode comprising spinel-structured lithium-manganese complex oxide as an active material, the spinel-structured lithium-manganese complex oxide being in the form of hollow, spherical particles obtained by sintering single primary crystal particles of lithium manganese complex oxide; and an electrolyte.
- 12. The lithium secondary battery according to claim 11, wherein the single crystal particles have an average diameter of from about 70 to 500 nm.
- 13. The lithium secondary battery according to claim 11, wherein the spinel-structured lithium-manganese complex oxide is represented by the formulaLi(Mn2-xLix)O4 where 0≦x≦0.1.
- 14. The lithium secondary battery according to claim 13, wherein 0<x≦0.1.
- 15. The lithium secondary battery according to claim 11, wherein the spinel-structured lithium-manganese complex oxide is represented by the formulaLi(Mn2-x-yAyLix)O4 where 0≦x+y≦0.1 and A is selected from the group consisting of Cr, Ni, Fe, Co and Mg.
- 16. The lithium secondary battery according to claim 11, wherein the electrolyte is a separator containing non-aqueous electrolytic solution or solid-state electrolyte.
Priority Claims (4)
Number |
Date |
Country |
Kind |
8-206661 |
Jul 1996 |
JP |
|
8-248673 |
Aug 1996 |
JP |
|
9-013091 |
Jan 1997 |
JP |
|
9-362089 |
Dec 1997 |
JP |
|
Parent Case Info
This is a continuation-in-part of application Ser. No. 08/895,319, filed Jul. 16, 1997, which is hereby incorporated by reference herein.
US Referenced Citations (27)
Foreign Referenced Citations (10)
Number |
Date |
Country |
0582448A1 |
Feb 1994 |
EP |
0709906A1 |
May 1996 |
EP |
0820113A1 |
Jan 1998 |
EP |
6333562 |
Dec 1994 |
JP |
07006764 |
Jan 1995 |
JP |
8069790 |
Mar 1996 |
JP |
08321300 |
Dec 1996 |
JP |
WO9425398 |
Nov 1994 |
WO |
9534919 |
Dec 1995 |
WO |
9612676 |
May 1996 |
WO |
Non-Patent Literature Citations (2)
Entry |
“Preparation of Spherical LiCoO2 Powders by the Ultrasonic Spray Decomposition and Its Application to Cathode Active Material in Lithium Secondary Battery”; Takashi Ogihara, et al.; Journal of the Ceramic Society of Japan; International Edition; 101 (1993) Oct.; No. 10; pp. 1128-1132. |
“Electrochemistry and Structural Chemistry of LiNiO2 (R3) for 4 Volt Secondary Lithium Cells”; Tsutomu Ohzuku, et al.; J. Electrochem. Soc.; vol. 140, No. 7, Jul. 1993; pp. 1862-1870. |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
08/895319 |
Jul 1997 |
US |
Child |
09/004104 |
|
US |