Method And System For An Ultra-High Voltage Cobalt-Free Cathode For Alkali Ion Batteries
Systems and methods for an ultra-high voltage cobalt-free cathode for alkali ion batteries may include an anode, a cathode, and a separator, with the cathode comprising an active material ANi (1-x) Mn x SbO y , where x is a number between 0.0 and 1.0, y is an integer, and A comprises one or more of lithium, sodium, and potassium. The anode may include one or more of an alkali metal, silicon, and carbon. In one example, x is a value in the range between 0.05 and 0.9 and y is a value in the range between 1 and 8 where a specific capacity of the active material is greater than 50 milliamp-hours per gram. In another example, x is a value in the range between 0.4 and 0.6 and y is a value in the range between 1 and 8, where a specific capacity of the active material is greater than 70 milliamp-hours per gram.
1 - 12 . (canceled)
13 . A method of forming a battery, the method comprising:
providing an anode, a cathode, and a separator, the cathode comprising an active material ANi (1-x) Mn x SbO y , where x is a number between 0.0 and 1.0, y is an integer, and A comprises one or more of lithium, sodium, and potassium.
14 . The method according to claim 13 , wherein the anode comprises one or more of: an alkali metal, silicon, and carbon.
15 . The method according to claim 13 , wherein the active material comprises a 5 to 30% excess of lithium.
16 . The method according to claim 13 , wherein 0.05<x<0.9 and 1<y<8.
17 . The method according to claim 16 , wherein a discharge specific capacity of the active material is >50 milliamp-hours per gram.
18 . The method according to claim 13 , wherein 0.4<x<0.6 and 1<y<8.
19 . The method according to claim 18 , wherein a discharge specific capacity of the active material is >70 milliamp-hours per gram.
20 . The method according to claim 13 , wherein the active material is doped with a transition metal oxide or a non-transition metal oxide.
21 . The method according to claim 13 , wherein x=0.2, y=2, and a discharge specific capacity of the active material is greater than 100 milliamp-hours per gram.
22 . The method according to claim 13 , wherein the cathode active material comprises a 5 to 30% excess of lithium.
23 . The method according to claim 13 , wherein the battery operates at a voltage of more than 4.5 volts vs Li/Li+.
24 - 34 . (canceled)