| 主权项 |
1. A lithium rechargeable battery, comprising:
a cathode plate comprised of a cathode current collector layer; and a cathode layer comprising particles of a mixed cathode active material comprised of:
(a) particles of carbon-coated lithium iron phosphate (LiFePO4) that are nanoparticles of lithium iron phosphate (LiFePO4) coated with carbon particles; and(b) particles of a lithium transition metal oxide containing a transition metal selected from the group consisting of nickel, cobalt and manganese, that are undoped or doped by impurities selected from the group consisting of aluminum, iron, copper, titanium and magnesium; an anode plate spaced apart from the cathode plate and comprised of an anode current collector layer; and an anode layer comprising a mixed anode active material comprised of:
particles of a spinel lithium titanium oxide (Li4Ti5O12); andnanotubes of a lithium titanium oxide, LixTiO2, where 0<x<2, that are present in an amount effective to increase charging capacity of the lithium rechargeable battery above that of a lithium rechargeable battery with an anode layer containing only particles of a spinel lithium titanium oxide (Li4Ti5O12); and a polymer electrolyte disposed between the cathode plate and the anode plate, wherein the particles of a spinel lithium titanium oxide (Li4Ti5O12) and the nanotubes of a lithium titanium oxide, LixTiO2, where 0<x<2, of the mixed anode active material are present in the mixture in a weight ratio ranging from 99:1 to 1:99. |
