Nonaqueous electrolyte secondary battery
AssigneeSanyo Electric Co., Ltd.
InventorsYusuke Nishio, Masanori Maekawa
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Abstract
The present invention has an object to provide a nonaqueous electrolyte secondary battery having high capacity and excellent cycle characteristics. A nonaqueous electrolyte secondary battery according to an embodiment of the present invention includes a positive electrode plate containing a lithium-cobalt composite oxide and a lithium-nickel-cobalt-manganese composite oxide (LiaNibCocMn1-b-cO, 0.9<a≦1.2, 0<b≦0.8, 0<c≦0.9) having an average primary particle size of 1.2 μm to 5.0 μm and a negative electrode which contains one of silicon (Si) and silicon oxide (SiOx, 0.5≦x<1.6) and which includes a negative electrode active material that stores and releases lithium ions.
Claims5
A nonaqueous electrolyte secondary battery comprising:
- a positive electrode plate containing a lithium-cobalt composite oxide (LiCoO2) and a lithium-nickel-cobalt-manganese composite oxide (LiaNibCocMn1-b-cO2, 0.9<a≦1.2, 0<b≦0.8, 0<c≦0.9) having an average primary particle size of 1.2 μm to 5.0 μm as a positive electrode active material,
- a negative electrode plate containing at least one of silicon (Si) and silicon oxide (SiOx, 0.5≦x<1.6) as a negative electrode active material,
- a separator, and
- a nonaqueous electrolyte.
Dependencies are inferred from the claim text.