US 12,142,766 B2
Silicon-based composite anodes for high energy density, high cycle life solid-state lithium-ion battery
Zhigang Lin, Santa Ana, CA (US); and Kevin Zanjani, Santa Ana, CA (US)
Assigned to Solid Energies Inc., Santa Ana, CA (US)
Filed by Solid Energies Inc., Santa Ana, CA (US)
Filed on Dec. 6, 2023, as Appl. No. 18/530,950.
Application 18/530,950 is a division of application No. 17/329,088, filed on May 24, 2021, granted, now 11,888,162.
Prior Publication US 2024/0113299 A1, Apr. 4, 2024
Int. Cl. H01M 4/62 (2006.01); H01M 4/02 (2006.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/48 (2010.01); H01M 4/587 (2010.01); H01M 10/0525 (2010.01); H01M 10/056 (2010.01); H01M 10/0585 (2010.01)
CPC H01M 4/622 (2013.01) [H01M 4/364 (2013.01); H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/483 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); H01M 10/056 (2013.01); H01M 10/0585 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2300/0071 (2013.01); H01M 2300/0082 (2013.01); H01M 2300/0091 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A process for preparing a solid-state lithium-ion battery cell which comprises:
(a) providing a ceramic-polymer-infiltrated composite silicon-based anode that comprises: (i) a first polymer matrix, (ii) first ceramic nanoparticles that are distributed in the first polymer matrix, (iii) a first lithium salt, (iv) a first plasticizer, (v) an anode active material that is distributed in the first polymer matrix, (vi) a first conducting agent that is distributed in the first polymer matrix, (vii) a first binder if the weight ratio of the anode active material is greater than 80 wt %;
(b) providing a ceramic-polymer-infiltrated composite cathode that comprises: (i) a second polymer matrix, (ii) second ceramic nanoparticles that are distributed in the second polymer matrix, (iii) a second lithium salt, (iv) a second plasticizer, (v) a cathode active material that is distributed in the second polymer matrix, (vi) a second conducting agent that is distributed in the second polymer matrix, (vii) a second binder if weight ratio of cathode active material is greater than 80 wt %; and
(c) forming a sold-state electrolyte between the cathode and anode which comprises ceramic-polymer composite electrolyte membrane that comprises: (i) a third polymer matrix, (ii) third ceramic nanoparticles with diameters that range from 10 to 2000 nm and that are distributed in the third polymer matrix, (iii) third plasticizer (iv) third lithium salt, wherein the third ceramic nanoparticles are selected from the group consisting of ceramic materials having the formula Li7La3Zr2O12 (LLZO) and derivatives thereof wherein at least one of Al, Ta or Nb is substituted in Zr sites of the Li7La3Zr2O12.