Positive electrode active material and non-aqueous electrolyte cell
AssigneeSony Corporation
InventorsGuohua Li, Atsuo Yamada
Life of this patent
Estimating the term…
Abstract
A positive electrode active material and a non-aqueous electrolyte cell which uses the positive electrode active material. The cell has a high discharge voltage without lowering the capacity and superior charging/discharging characteristics. To this end, the positive electrode active material contains a compound represented by the general formula LixMnyFe1-yPO4, wherein 0<x≦2 and 0.5<y<0.95, or a compound represented by the general formula LixMnyA1-yPO4, where 0<x≦2 and 0<y<1 and wherein A is a metal element selected from among Ti, Zn, Mg and Co or plural metal elements selected from among Ti, Fe, Zn, Mg and Co.
Claims16
A positive electrode active material containing a compound represented by the general formula LixMnyFe1-yPO4, where 0<x≦2 and 0.5<y<0.95.
A positive electrode active material containing a compound represented by the general formula LixMnyFezA1-(y+z)PO4, where 0<x≦2, 0.5<y<0.95, 0.5<y+z<1 and A is at least one metal element selected from Ti and Ag.
A non-aqueous electrolyte cell comprising:
- a positive electrode containing a positive electrode active material;
- a negative electrode containing a negative electrode active material;
- and
- an electrolyte interposed between said positive and negative electrodes;
- wherein
- said positive electrode active material contains a compound represented by the general formula LixMnyFe1-yPO4 where 0<x≦2 and 0.5<y<0.95.
A non-aqueous electrolyte cell comprising:
- a positive electrode containing a positive electrode active material;
- a negative electrode containing a negative electrode active material;
- and
- an electrolyte interposed between said positive and negative electrodes;
- wherein
- said positive electrode active material contains a compound represented by the general formula LixMnyFezA1-(y+z)PO4 where 0<x≦2, 0.5<y<0.95 and 0.5<y+z<1 and wherein A is at least one metal element selected from Ti and Mg.
A positive electrode active material containing a compound represented by the general formula LixMnyB1-yPO4, where 0<x≦2 and 0<y<1 and wherein B is a metal element selected from among Ti, Zn, Mg and Co.
A positive electrode active material containing a compound represented by the general formula LixMnyB1-yPO4, where 0<x≦2 and 0<y<1 and wherein B denotes plural metal elements selected from among Ti, Fe, Zn, Mg and Co.
A non-aqueous electrolyte cell comprising:
- a positive electrode containing a positive electrode active material;
- a negative electrode containing a negative electrode active material;
- and
- an electrolyte interposed between said positive and negative electrodes;
- wherein
- said positive electrode active material contains a compound represented by the general formula LixMnyB1-yPO4 where 0<x≦2 and 0<y<1 and wherein B denotes one metal element selected from among Ti, Zn, Mg and Co.
A non-aqueous electrolyte cell comprising:
- a positive electrode containing a positive electrode active material;
- a negative electrode containing a negative electrode active material;
- and
- an electrolyte interposed between said positive and negative electrodes;
- wherein
- said positive electrode active material contains a compound represented by the general formula LixMnyB1-yPO4 where 0<x≦2 and 0<y<1 and wherein B denotes plural metal elements selected from among Ti, Fe, Zn, Mg and Co.
Dependencies are inferred from the claim text.