US 12,283,655 B2
High-ionic conductivity ceramic-polymer nanocomposite solid state electrolyte
Zhigang Lin, Garden Grove, CA (US); Chunhu Tan, Garden Grove, CA (US); and Chao Yi, Garden Grove, CA (US)
Assigned to SOLID ENERGIES INC.
Filed by SOLID ENERGIES INC., Garden Grove, CA (US)
Filed on Jul. 14, 2023, as Appl. No. 18/222,051.
Application 18/222,051 is a continuation of application No. 16/390,584, filed on Apr. 22, 2019, granted, now 11,955,595, issued on Apr. 9, 2024.
Prior Publication US 2023/0395843 A1, Dec. 7, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/056 (2010.01); H01M 4/38 (2006.01); H01M 4/58 (2010.01); H01M 10/052 (2010.01); H01M 50/446 (2021.01); H01M 50/449 (2021.01); H01M 50/497 (2021.01); H01M 10/0525 (2010.01)
CPC H01M 10/056 (2013.01) [H01M 4/382 (2013.01); H01M 4/5825 (2013.01); H01M 10/052 (2013.01); H01M 50/446 (2021.01); H01M 50/449 (2021.01); H01M 50/497 (2021.01); H01M 10/0525 (2013.01); H01M 2300/0065 (2013.01); H01M 2300/0068 (2013.01); H01M 2300/0071 (2013.01); H01M 2300/0082 (2013.01); H01M 2300/0091 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fire-resistant, non-flammable ceramic-polymer film that comprises: a polymer matrix; a plasticizer; a lithium salt; and AlxLi7-xLa3Zr1.75Ta0.25O12 where x ranges from 0.01 to 1 (LLZO), wherein the LLZO are nanoparticles with diameters that range from 20 to 2000 nm and wherein the film has an ionic conductivity of greater than 1×10−3 S/cm at room temperature wherein the polymer matrix comprises 10 to 50 wt % of the film wherein the polymer matrix comprises at least one of PEO, PCL, PAN, and mixtures thereof, the plasticizer comprises 10 to 60 wt % of the film, the lithium salt comprises 20 to 60 wt % of the film, and the LLZO comprises 15 to 25 wt % of the film and wherein the film is free standing and has a thickness that ranges from 100 to 900 μm and the film is thermally stable up to 150° C., and wherein the LLZO comprises a gradient along the thickness direction of the non-flammable ceramic-polymer film, wherein the non-flammable ceramic-polymer film defines a first interface configured to couple with an anode and a second interface configured to couple with a cathode, wherein the polymer matrix extends from the first interface to the second interface and the concentration of the LLZO in a region adjacent the first interface is higher than that in a region adjacent the second interface.
 
7. An electrochemical cell which comprises: an anode; a cathode; and
interposed therebetween is a solid-electrolyte which is a fire-resistant, non-flammable film which comprises:
a polymeric matrix;
a plasticizer;
a lithium salt; and
AlxLi7-xLa3Zr1.75Ta0.25O12 where x ranges from 0.01 to 1 (LLZO), wherein the LLZO are nanoparticles with diameters that range from 20 to 2000 nm and wherein the polymer matrix comprises 10 to 50 wt % of the film wherein the polymer matrix comprises at least one of PEO, PCL, PAN, and mixtures thereof, the plasticizer comprises 10 to 60 wt % of the film, the lithium salt comprises 20 to 60 wt % of the film, and the LLZO comprises 15 to 25 wt % of the film and wherein the film is free standing and has a thickness that ranges from 100 to 900 μm and the film is thermally stable up to 150° C., and wherein the LLZO comprises a gradient along the thickness direction of the non-flammable film, wherein the non-flammable film defines a first interface configured to couple with the anode and a second interface configured to couple with the cathode, wherein the polymer matrix extends from the first interface to the second interface and the concentration of the LLZO in a region adjacent the first interface is higher than that in a region adjacent the second interface.