Nonaqueous electrolyte secondary battery
AssigneeSanyo Electric Co., Ltd.
InventorsMotoharu Saito, Katsutoshi Takeda, Masahisa Fujimoto, Hiroshi Sawada
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Abstract
A positive electrode active material is made of sodium containing oxide. The sodium containing oxide contains NaALiBMO2±α that belongs to a space group P63/mmc of a hexagonal system, where the M includes at least one of manganese (Mn) and cobalt (Co). In the NaALiBMO2±α, the composition ratio A of sodium (Na) is not less than 0.5 and not more than 1.1, the composition ratio B of lithium (Li) is larger than 0 and not more than 0.3, and the α is not less than 0 and not more than 0.3.
Claims6
A nonaqueous electrolyte secondary battery comprising a positive electrode containing a positive electrode active material made of sodium containing oxide, a negative electrode and a nonaqueous electrolyte, wherein
- said sodium containing oxide contains NaALiBMO2±α (0.5≦A≦1.1, 0<B≦0.3, and 0≦α≦0.3) that belongs to a space group P63/mmc of a hexagonal system, where said M includes at least one of manganese and cobalt, and
- said nonaqueous electrolyte includes lithium salt.
Dependencies are inferred from the claim text.