US 12,034,111 B2
Solid composite electrolyte
Paula Cojocaru, Legnano (IT); Alessandro Ghielmi, Frankfurt am Main (DE); Maurizio Biso, Milan (IT); Vincent Finsy, Halle (BE); and Elena Molena, Bollate (IT)
Assigned to SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bollate (IT)
Appl. No. 17/422,473
Filed by SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bollate (IT)
PCT Filed Jan. 27, 2020, PCT No. PCT/EP2020/051859
§ 371(c)(1), (2) Date Jul. 13, 2021,
PCT Pub. No. WO2020/156972, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 19154373 (EP), filed on Jan. 30, 2019.
Prior Publication US 2022/0093959 A1, Mar. 24, 2022
Int. Cl. H01M 10/056 (2010.01); C08F 214/22 (2006.01); C08K 3/22 (2006.01)
CPC H01M 10/056 (2013.01) [C08F 214/225 (2013.01); C08K 3/22 (2013.01); C08K 2003/2203 (2013.01); C08K 2003/221 (2013.01); C08K 2003/2244 (2013.01); C08K 2003/2258 (2013.01); H01M 2300/0071 (2013.01); H01M 2300/0082 (2013.01); H01M 2300/0091 (2013.01)] 17 Claims
 
1. An ionically conductive composition (C) suitable for use in the preparation of components for solid state batteries, said composition comprising:
i) at least one ionic conductive solid inorganic substance in the form of powder [inorganic particle (IP)] having the following general formula:
M1aM2bM3cOd,
wherein
M1 is a first cationic element selected from the group consisting of H, Li, Na, and Ga, preferably Li;
M2 is a second cationic element selected from the group consisting of La, Ba, Sr, Ca, In, Mg, Y, Sc, Cr, Al, K, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu;
M3 is a third cationic element selected from the group consisting of Zr, Ta, Nb, Sb, Sn, Hf, Bi, W, Si, Se, Ga and Ge; and
a, b, c, and d are positive numbers including various combinations of integers and decimals;
ii) at least one vinylidene fluoride (VDF) copolymer [polymer (A)] that comprises:
(a) recurring units derived from vinylidene fluoride (VDF);
(b) recurring units derived from at least one fluorinated monomer different from VDF [monomer (FM)] selected from the group consisting of:
(b-1) C2-C8 fluoro- and/or perfluoroolefins such as tetrafluoroethylene (TFE), hexafluoropropylene (HFP), pentafluoropropylene and hexafluoroisobutylene;
(b-2) C2-C8 hydrogenated monofluoroolefins, such as vinyl fluoride; 1,2-difluoroethylene and trifluoroethylene (TrFE);
(b-3) perfluoroalkylvinylethers complying with formula CF2═CFORf1, in which Rf1 is a C1-C6-perfluoroalkyl group; and
(b-4) perfluorooxyalkylvinylethers complying with formula CF2═CFOROF, with ROF being a C1-C12-perfluorooxyalkyl, which comprises one or more than one ethereal oxygen atom;
(b-5) a chloro- and/or bromo- and/or iodo-C2-C6 fluoroolefins; and
(c) optionally, recurring units derived from at least one hydrophilic (meth)acrylic monomer (MA) of formula (I):

OG Complex Work Unit Chemistry
wherein each of R1, R2, R3, equal or different from each other, is independently an hydrogen atom or a C1-C3 hydrocarbon group, and ROH is a hydrogen or a C1-C5 hydrocarbon moiety comprising at least one —OH group,
iii) at least one solvent (S) selected from the group consisting of:
alcohols,
ketones,
linear or cyclic esters,
linear or cyclic amides, and
dimethyl sulfoxide.