Bendable, creasable, and printable batteries with enhanced safety and high temperature stability—methods of fabrication, and methods of using the same
A method forming a composite electrolyte by preparing a suspension. The suspension includes a solvent (comprising 90 wt % to 95 wt % of a total weight of liquids); a non-solvent (comprising 5 wt % to 50 wt % of a total weight of liquids); a binder (comprising 20 wt % to 50 wt % of a total weight of the composite electrolyte) and selected from the group consisting of PVDF, PVDF-HFP, PFTE, PEO, PMMA, PAN, CNC, SBR, and combinations thereof; and a ceramic filler (comprising 50 wt % to 80 wt % of the total weight of the composite electrolyte) having a cross-section diameter ranging from 50 nm to 150 nm and being selected from the group consisting of Al 2 O 3 , SiO 2 , TiO 2 , MgO, Li 2 O, LiAlO 2 , BaTiO 3 , LaGP, LATP, LLTO, and combinations thereof. The suspension is cast or printed and dried.
1. A method for fabricating a composite electrolyte, the method comprising:
preparing a suspension comprising:
a solvent comprising 90 wt % to 95 wt % of a total weight of liquids;
a non-solvent comprising 5 wt % to 50 wt % of a total weight of liquids;
a binder comprising 20 wt % to 50 wt % of a total weight of the composite electrolyte, the binder being selected from the group consisting of PVDF, PVDF-HFP, PFTE, PEO, PMMA, PAN, CNC, SBR, and combinations thereof; and
a ceramic filler comprising 50 wt % to 80 wt % of the total weight of the composite electrolyte, the ceramic filler having a cross-section diameter ranging from 50 nm to 150 nm and being selected from the group consisting of Al 2 O 3 , SiO 2 , TiO 2 , MgO, Li 2 O, LiAlO 2 , BaTiO 3 , LaGP, LATP, LLTO, and combinations thereof;
casting or printing the suspension; and
drying the suspension.
2. The method of claim 1 , wherein printing the suspension further comprises:
direct ink write, filamentary, ink jet, aerosol jet, stencil print, screen print, slot die, and doctor blade.
3. The method of claim 1 , wherein the ceramic filler comprises particles having a maximum dimension that ranges from 10 nm to 100 μm.
4. The method of claim 1 , wherein the solvent is selected from a group consisting of NMP, DMF, DMAc, tetramethyl urea, dimethyl sulfoxide, triethyl phosphate, and combinations thereof.
5. The method of claim 4 , wherein the non-solvent is selected from a group consisting of glycerol, water, ethanol, methanol, ethylene glycol, diethylene glycol, triethylene glycol, hexane, heptane, and combinations thereof.
6. The method of claim 1 , wherein a final thickness of the printed or cast composite electrolyte ranges from about 50 μm to about 60 μm.