Battery utilizing printable lithium
A battery, lithium metal powder technology, applied in the field of batteries using printable lithium, can solve the problem of capacity loss
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Embodiment 1
[0067] 10 g of styrene-butadiene rubber solution (S-SBR Europrene Sol R 72613) was dissolved in 90 g of toluene (99% anhydrous, Sigma Aldrich) by stirring at 21° C. for 12 hours. 6 g of 10 wt % SBR (polymer binder) in toluene (solvent) was combined with 0.1 g of carbon black (Timcal Super P) (rheology modifier) and 16 g of toluene and mixed in a ThinkyARE 250 planetary mixer Disperse at 2000 rpm for 6 minutes. 9.3 g of stabilized lithium metal powder ( FMC Lithium Corp.) was added to the suspension and dispersed in a Thinky mixer at 1000 rpm for 3 minutes. The printable lithium was then filtered through a stainless steel mesh with 180 μm openings. The printable lithium suspension was then blade coated onto the copper current collector at a 2 mil (-50 μm) wet thickness. image 3 is a graph showing the cycle performance of a pouch cell with a printable lithium-derived thin 20-micron lithium film as the anode versus a commercial 50-micron lithium foil as the anode.
Embodiment 2
[0069] 10 g of ethylene propylene diene terpolymer (EPDM) with a molecular weight of 135,000 (Dow Nordel IP 4725P) were dissolved in 90 g of p-xylene (99% anhydrous, Sigma Aldrich) by stirring at 21° C. for 12 hours. 6 g of 10 wt % EPDM (polymer binder) in p-xylene (solvent) was combined with 0.1 g TiO2 (Evonik Industries) (rheology modifier) and 16 g toluene and mixed in a Thinky ARE250 planetary mixer Disperse at 2000 rpm for 6 minutes. 9.3 g of stabilized lithium metal powder ( Corp.) was added to the suspension and dispersed in a Thinky mixer at 1000 rpm for 3 minutes. The printable lithium was then filtered through a stainless steel mesh with 180 μm openings. The printable lithium composition was then blade coated onto the copper current collector at a 2 mil (-50 μm) wet thickness.
Embodiment 3
[0071] 1.5 g of 1.27 M molecular weight PIB was dissolved in 85 g of toluene by stirring at 21 °C for 12 hours. Then 1.5 g of carbon nanotubes were added to the solution and stirring was continued for about 1 hour to form a homogeneous suspension. 30 g of stabilized lithium metal powder ( FMC Lithium Corp.) was added to the suspension and dispersed in a Thinky mixer at 1000 rpm for 3 minutes. The printable lithium suspension was then filtered through a stainless steel mesh with 180 μm openings. The printable lithium composition was then printed onto the copper current collector at a wet thickness of 2 mils (-50 μm) and a dry thickness of approximately 25 μm before lamination.
[0072] shelf life stability
[0073] The printable lithium component must be chosen to ensure chemical stability for longer storage periods at room temperature and stability at elevated temperatures for shorter durations, such as during transport or during the drying process. The stability of the p...
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