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:
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
benzyl butyl phthalate;
wherein the benzyl butyl phthalate is present at 5% w/w.
2. The slurry of claim 1 , wherein the acrylic binder comprises methyl methacrylate and ethyl methacrylate.
3. The slurry of claim 1 , wherein the acrylic binder comprises methyl methacrylate.
4. The slurry of claim 1 , wherein the acrylic binder comprises ethyl methacrylate.
5. The slurry of claim 1 , wherein the acrylic binder is a poly methyl methacrylate or poly ethyl-methyl methacrylate.
6. The slurry of claim 1 , further comprising a solvent, wherein the solvent is selected from isopropanol, water, butanol, and tetrahydrofuran.
7. The slurry of claim 1 , wherein the solvent is selected from isopropanol, butanol, and tetrahydrofuran.
8. The slurry of claim 1 , wherein the solvent is tetrahydrofuran.
9. The slurry of claim 1 , further comprising Li 2 ZrO 3 , Li 2 SiO 3 , LiLaO 2 , LiAlO 2 , Li 2 O, or Li 3 PO 4 .
10. The slurry of claim 9 , wherein the slurry comprises Li 2 ZrO 3 .
11. The slurry of claim 9 , wherein the slurry comprises LiAlO 2 .
12. The slurry of claim 9 , wherein the slurry comprises Li 2 O.
13. The slurry of claim 9 , wherein the slurry comprises Li 3 PO 4 .