	US 12,463,219 B2
	Composition for secondary battery electrodes
Maurizio Biso, Milan (IT); and Paula Cojocaru, Legnano (IT)
Assigned to SYENSQO SPECIALTY POLYMERS ITALY S.P.A., Bollate (IT)
Appl. No. 17/618,905
Filed by SYENSQO SPECIALTY POLYMERS ITALY S.P.A., Bollate (IT)
PCT Filed Jun. 29, 2020, PCT No. PCT/EP2020/068253 § 371(c)(1), (2) Date Dec. 14, 2021, PCT Pub. No. WO2021/001315, PCT Pub. Date Jan. 7, 2021.
Claims priority of application No. 19183739 (EP), filed on Jul. 1, 2019.
Prior Publication US 2022/0311005 A1, Sep. 29, 2022
Int. Cl. H01M 4/62 (2006.01); C08G 73/14 (2006.01); H01M 4/02 (2006.01); H01M 4/131 (2010.01); H01M 4/133 (2010.01); H01M 4/134 (2010.01)

CPC H01M 4/623 (2013.01) [C08G 73/14 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 4/131 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01)]

13 Claims

1. An electrode-forming composition comprising:

(i) from 0.5 wt % to 10 wt % of one or more aromatic polyamide-imide (PAI) polymers comprising more than 50% by moles of recurring units (R_PAI) each of said R_PAIrecurring units comprising

at least one aromatic ring,

at least one imide group as such or in its amic acid form or as a salt of its amic acid form

at least one amide group which is not included in the amic acid form of an imide group;

(ii) from 80 wt % to 99 wt % one or more electro-active compounds;

(iii) one or more solvents; and

(iv) from 0.1 wt % to 5 wt % of one or more co-binder materials, being selected among fluoroelastomers and SBR rubbers having a Tg below 30° C. and having an enthalpy of fusion from 0 to 90 J/g,

wherein the weight ratio between co-binder and binder is 2 or lower, and wherein all percentages are weight percentages of the total “solids” in the electrode forming composition.