US 11,955,595 B2
High-ionic conductivity ceramic-polymer nanocomposite solid state electrolyte
Zhigang Lin, Santa Ana, CA (US); Chunhu Tan, Santa Ana, CA (US); and Chao Yi, Santa Ana, CA (US)
Assigned to Bioenno Tech LLC, Santa Ana, CA (US)
Filed by Bioenno Tech LLC, Santa Ana, CA (US)
Filed on Apr. 22, 2019, as Appl. No. 16/390,584.
Prior Publication US 2020/0335814 A1, Oct. 22, 2020
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 50/497 (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 50/497 (2021.01); H01M 10/0525 (2013.01); H01M 2300/0071 (2013.01); H01M 2300/0082 (2013.01); H01M 2300/0091 (2013.01)] 11 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 0.2 (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 PEGDA which comprises 15 to 25 wt % of the film, the plasticizer comprises succinonitrile (SCN) which comprises 20 to 50 wt % of the film, the lithium salt comprises LiTFSI which comprises 30 to 40 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.
 
9. A process for preparing an electrochemical cell which comprises:
(a) providing a cathode;
(b) providing an anode;
(c) forming a sold-electrolyte between the cathode and anode wherein the solid electrolyte is a film that comprises:
a polymeric matrix;
a plasticizer;
a lithium salt; and
AlxLi7-xLa3Zr1.75Ta0.25O12 where x ranges from 0.01 to 0.2 (LLZO), wherein the LLZO are nanoparticles with diameters that range from 20 to 2000 nm wherein the polymer matrix comprises PEGDA which comprises 15 to 25 wt % of the film, the plasticizer comprises succinonitrile (SCN) which comprises 20 to 50 wt % of the film, the lithium salt comprises LiTFSI which comprises 30 to 40 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.