Lithium stuffed garnet setter plates for solid electrolyte fabrication
Setter plates are fabricated from Li-stuffed garnet materials having the same, or substantially similar, compositions as a garnet Li-stuffed solid electrolyte. The Li-stuffed garnet setter plates, set forth herein, reduce the evaporation of Li during a sintering treatment step and/or reduce the loss of Li caused by diffusion out of the sintering electrolyte. Li-stuffed garnet setter plates, set forth herein, maintain compositional control over the solid electrolyte during sintering when, upon heating, lithium is prone to diffuse out of the solid electrolyte.
1. A slurry comprising:
a lithium-stuffed garnet characterized by the formula Li A La B M′ C M″ D Zr E O F , wherein 4<A<8.5, 1.5<B<4, 0≤C≤2, 0≤D≤2; 0≤E<2, 10<F<13, and M′ and M″ are each, independently in each instance, selected from Al, Mo, W, Nb, Sb, Ca, Ba, Sr, Ce, Hf, Rb, and Ta;
LiAlO 2 ;
a solvent, wherein the solvent is selected from isopropanol, butanol, tetrahydrofuran, and combinations thereof;
an acrylic binder; and
a plasticizer; wherein the plasticizer is present at 5% w/w or less.
2. The slurry of claim 1 , wherein the acrylic binder is present at 5% w/w.
3. The slurry of claim 1 , wherein the plasticizer is dibutyl phthalate or benzyl butyl phthalate.
4. The slurry of claim 2 , wherein the acrylic binder comprises methyl methacrylate and ethyl methacrylate.
5. The slurry of claim 2 , wherein the acrylic binder comprises methyl methacrylate.
6. The slurry of claim 2 , wherein the acrylic binder comprises ethyl methacrylate.
7. The slurry of claim 2 , wherein the acrylic binder is a poly methyl methacrylate or poly ethyl-methyl methacrylate.
8. The slurry of claim 1 , further comprising a solvent, wherein the solvent is selected from isopropanol, butanol, and combinations thereof.
9. The slurry of claim 1 , wherein the solvent is selected from isopropanol, tetrahydrofuran, and combinations thereof.
10. The slurry of claim 9 , wherein the solvent is tetrahydrofuran.
11. A slurry comprising:
a lithium-stuffed garnet characterized by the formula Li A La B M′ C M″ D Zr E O F , wherein 4<A<8.5, 1.5<B<4, 0≤C<2, 0≤D<2; 0≤E<2, 10<F<13, and M′ and M″ are each, independently in each instance, selected from Al, Mo, W, Nb, Sb, Ca, Ba, Sr, Ce, Hf, Rb, and Ta;
an acrylic binder; and
a plasticizer; wherein the plasticizer is present at 5% w/w or less;
wherein the slurry further comprises Li 2 ZrO 3 , Li 2 SiO 3 , LiLaO 2 , LiAlO 2 , Li 2 O, or Li 3 PO 4 .
12. The slurry of claim 11 , wherein the acrylic binder is present at 5% w/w.
13. The slurry of claim 11 , wherein the plasticizer is dibutyl phthalate or benzyl butyl phthalate.
14. The slurry of claim 12 , wherein the acrylic binder comprises methyl methacrylate and ethyl methacrylate.
15. The slurry of claim 12 , wherein the acrylic binder comprises methyl methacrylate.
16. The slurry of claim 12 , wherein the acrylic binder comprises ethyl methacrylate.
17. The slurry of claim 12 , wherein the acrylic binder is a poly methyl methacrylate or poly ethyl-methyl methacrylate.
18. The slurry of claim 11 , further comprising a solvent, wherein the solvent is selected from methanol, ethanol, isopropanol, butanol, pentanol, hexanol, toluene, xylene, tetrahydrofuran, toluene: ethanol, acetone, N-methyl-2-pyrrolidinone (NMP), diacetone alcohol, ethyl acetate, acetonitrile, hexane, nonane, dodecane, methyl ethyl ketone (MEK), and combinations thereof.
19. The slurry of claim 11 , wherein the solvent is selected from isopropanol, butanol, tetrahydrofuran, and combinations thereof.
20. The slurry of claim 19 , wherein the solvent is tetrahydrofuran.
21. The slurry of claim 11 , wherein the slurry comprises Li 2 ZrO 3 .
22. The slurry of claim 11 , wherein the slurry comprises LiAlO 2 .
23. The slurry of claim 11 , wherein the slurry comprises Li 2 O.
24. The slurry of claim 11 , wherein the slurry comprises Li 3 PO 4 .
25. The slurry of claim 11 , wherein the slurry comprises LiLaO 2 .