Positive electrode active material, non-aqueous electrolyte secondary battery and method for producing positive electrode active material
AssigneeSony Corporation
InventorsAtsuo Yamada, Guohua Li, Hideto Azuma
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Abstract
A non-aqueous electrolyte secondary battery employing a positive electrode active material containing a compound represented by the general formula LixMyPO4, where 0<x≦2 and 0.8≦y≦1.2, with M containing a 3d transition metal, where LixMyPO4 encompasses that with the grain size not larger than 10 μm. The non-aqueous electrolyte secondary battery has superior cyclic characteristics and a high capacity.
Claims7
1-4. (canceled)
A positive electrode active material comprising grains, said grains comprising a compound of formula Lix(FeyM1-y)PO4, wherein:
- 0.9≦x≦1.1 and 0<y≦1;
- M contains at least one 3d transition metal;
- and
- said grains have a grain size not larger than 10 μm.
7-10. (canceled)
A non-aqueous electrolyte secondary battery comprising a positive electrode said positive electrode comprising a positive electrode active material, said positive electrode comprising grains, said grains comprising a compound of formula Lix(FeyM1-y)PO4, wherein:
- 0.9≦x≦1.1 and 0<y≦1;
- M contains at least one 3d transition metal;
- and
- said grains have a grain size not larger than 10 μm.
13-15. (canceled)
Dependencies are inferred from the claim text.