Patent ID: 7939201

Claim:
A high power storage battery comprising: a cathode including an electroactive material consisting of a nanoscale lithium transition metal phosphate containing only one transition metal, having a specific surface area of at least about 20 m 2 /g, and comprising at least two co-existing olivine phases, including a lithium-rich transition metal phosphate phase and a lithium-poor transition metal phosphate phase, wherein the percentage molar volume difference between the two phases is less than about 6.4%; an anode; an electrolyte in contact with and separating the anode and cathode; a cathode current collector in electronic communication with the cathode; and an anode current collector in electronic communication with the anode, wherein the storage battery exhibits specific power of at least about 500 W/kg (1000 W/L) at specific energy of at least about 100 Wh/kg (205 Wh/L).