Compositions for High Energy Electrodes and Methods of Making and Use
A material for forming an electrode represented by the formula: Li 1+x-a D1 a Nm 1-x-y-z-b1 Ni y-b2 D2 b Co z-b3 O 2-δ where 0<a≦0.2, 0<b≦0.2,b1+b2+b3=b, 0.1≦x≦0.5, 0≦y<1, 0≦z≦0.5, and 0≦δ≦0.3 and D1 includes sodium (Na) and D2 includes yttrium (Y).
1 . An electrode, comprising:
a material represented by
Li 1+x-a D1 a Mn 1-x-y-z-b1 Ni y-b2 D2 b Co z-b3 O 2-δ
where0<a≦0.2,0<b≦0.2,b1+b2+b3=b,0.1≦x≦0.5,0≦y<1,0≦z≦0.5,and0 ≦δ≦0.3.
wherein D1 comprises sodium (Na) and D2 comprises yttrium (Y).
2 . The electrode of claim 1 wherein 0<a≦0.1.
3 . The electrode of claim 1 wherein 0.05≦a≦0.1.
4 . The electrode of claim 1 wherein 0<b≦0.1.
5 . The electrode of claim 1 wherein the material comprises Li 1.07 Mn 0.52 Ni 0.2 Co 0.1 Na 0.1 Y 0.01 O 2 .
6 . The electrode of claim 1 wherein the material comprises Li 1.07 Mn 0.52 Ni 0.19 Co 0.1 Na 0.1 Y 0.02 O 2 .
7 . The electrode of claim 1 wherein the material comprises Li 1.07 Mn 0.53 Ni 0.19 Co 0.1 Na 0.1 Y 0.01 O 2 .
8 . The electrode of claim 1 wherein the material comprises Li 1.07 Mn 0.5172 Ni 0.1952 Co 0.0976 Na 0.1 Y 0.02 O 2 .
9 . The electrode of claim 1 wherein the material comprises Li 1.07 Na 0.1 Mn 0.52 Y 0.01 Ni 0.2 Co 0.1 O 2 .
10 . The electrode of claim 1 wherein the material is formed by co-precipitation.
11 . The electrode of claim 1 wherein the material is formed by solid-state synthesis.
12 . A battery comprising the electrode of claim 1 .