A method of forming a cathode comprising: (a) mixing a lithium metal oxide and a lithium metal phosphate in a solvent, wherein the lithium metal phosphate has a volume fraction of secondary particles having a size of 0.1 to 3 micrometers that is from 5 to 100%, based on the total content of the lithium metal phosphate; and wherein the lithium metal phosphate has the formula: Li 1+a Mn b Fe c M l-b-c PO 4, Formula wherein: a is a number from 0.0 to 0.2, and preferably from 0.0 to 0.15, and more preferably from 0 to 0.12; b is a number from 0.05 to 0.95, and preferably from 0.1 to 0.9, and more preferably from 0.2 to 0.8; c is a number from 0.05 to 0.95, and preferably from 0.1 to 0.9, and more preferably from 0.2 to 0.8; and (1-b-c) is from 0.0 to 0.2, and preferably from 0.0 to 0.15, and more preferably from 0.0 to 0.12, wherein M is a metal ion selected from one or more of magnesium, calcium, strontium, cobalt, titanium, zirconium, molybdenum, vanadium, niobium, nickel, scandium, chromium, copper, zinc, beryllium, lanthanum and aluminum, and the lithium metal oxide has the following formula: Li x Ni y Mn z Co( 2-x-y-z)D w O 2, Formula, or Li x Ni y Mn z Co( 2-x-y-z)O 2 wherein: x is a number from 0.9 to 1.15, and preferably from 0.95 to 0.110, and more preferably from 0.98 to 1.08; y is a number from 0.05 to 0.95, and preferably from 0.2 to 0.95, and more preferably from 0.3 to 0.95; z is a number from 0.05 to 0.95, and preferably from 0.05 to 0.8, and more preferably from 0.05 to 0.7; (2-x-y-z) is from 0.05 to 0.95, and preferably from 0.05 to 0.8, and more preferably from 0.5 to 0.7, and w is 0 to 0.4, and preferably 0 to 0.3, and wherein D, when present, is selected from the group consisting of B, Al, Ti, Mg, Nb, Si, Fe, V, Cr Cu, Zn, Ga and W, and is preferably selected from the group consisting of Al, Ti, Mg, and Nb (b) coating the mixture of step (a) on to a metal foil; and (c) removing the solvent to form the cathode wherein a D50 of the lithium metal phosphate is equal to or less than 3.5 micrometers. (a) mixing a lithium metal oxide and a lithium metal phosphate in a solvent, wherein the lithium metal phosphate has a volume fraction of secondary particles having a size of 0.1 to 3 micrometers that is from 5 to 100%, based on the total content of the lithium metal phosphate; and wherein the lithium metal phosphate has the formula: Li 1+a Mn b Fe c M l-b-c PO 4, Formula wherein: a is a number from 0.0 to 0.2, and preferably from 0.0 to 0.15, and more preferably from 0 to 0.12; b is a number from 0.05 to 0.95, and preferably from 0.1 to 0.9, and more preferably from 0.2 to 0.8; c is a number from 0.05 to 0.95, and preferably from 0.1 to 0.9, and more preferably from 0.2 to 0.8; and (1-b-c) is from 0.0 to 0.2, and preferably from 0.0 to 0.15, and more preferably from 0.0 to 0.12, wherein M is a metal ion selected from one or more of magnesium, calcium, strontium, cobalt, titanium, zirconium, molybdenum, vanadium, niobium, nickel, scandium, chromium, copper, zinc, beryllium, lanthanum and aluminum, and the lithium metal oxide has the following formula: Li x Ni y Mn z Co( 2-x-y-z)D w O 2, Formula, or Li x Ni y Mn z Co( 2-x-y-z)O 2 wherein: x is a number from 0.9 to 1.15, and preferably from 0.95 to 0.110, and more preferably from 0.98 to 1.08; y is a number from 0.05 to 0.95, and preferably from 0.2 to 0.95, and more preferably from 0.3 to 0.95; z is a number from 0.05 to 0.95, and preferably from 0.05 to 0.8, and more preferably from 0.05 to 0.7; (2-x-y-z) is from 0.05 to 0.95, and preferably from 0.05 to 0.8, and more preferably from 0.5 to 0.7, and w is 0 to 0.4, and preferably 0 to 0.3, and wherein D, when present, is selected from the group consisting of B, Al, Ti, Mg, Nb, Si, Fe, V, Cr Cu, Zn, Ga and W, and is preferably selected from the group consisting of Al, Ti, Mg, and Nb a is a number from 0.0 to 0.2, and preferably from 0.0 to 0.15, and more preferably from 0 to 0.12; b is a number from 0.05 to 0.95, and preferably from 0.1 to 0.9, and more preferably from 0.2 to 0.8; c is a number from 0.05 to 0.95, and preferably from 0.1 to 0.9, and more preferably from 0.2 to 0.8; and (1-b-c) is from 0.0 to 0.2, and preferably from 0.0 to 0.15, and more preferably from 0.0 to 0.12, x is a number from 0.9 to 1.15, and preferably from 0.95 to 0.110, and more preferably from 0.98 to 1.08; y is a number from 0.05 to 0.95, and preferably from 0.2 to 0.95, and more preferably from 0.3 to 0.95; z is a number from 0.05 to 0.95, and preferably from 0.05 to 0.8, and more preferably from 0.05 to 0.7; (2-x-y-z) is from 0.05 to 0.95, and preferably from 0.05 to 0.8, and more preferably from 0.5 to 0.7, and w is 0 to 0.4, and preferably 0 to 0.3, and wherein D, when present, is selected from the group consisting of B, Al, Ti, Mg, Nb, Si, Fe, V, Cr Cu, Zn, Ga and W, and is preferably selected from the group consisting of Al, Ti, Mg, and Nb (b) coating the mixture of step (a) on to a metal foil; and (c) removing the solvent to form the cathode