US 12,351,667 B2
Separator for electrochemical energy accumulators and converters
Michael Roth, Mainz (DE); Iain Smith, Dursley (GB); Christian Waschinski, Heidelberg (DE); Sandra Falusi, Viernheim (DE); and Marco Sutter, Weinheim (DE)
Assigned to CARL FREUDENBERG KG, Weinheim (DE)
Appl. No. 17/312,953
Filed by Carl Freudenberg KG, Weinheim (DE)
PCT Filed Dec. 6, 2019, PCT No. PCT/EP2019/083964
§ 371(c)(1), (2) Date Jun. 11, 2021,
PCT Pub. No. WO2020/120310, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 10 2018 131 928.2 (DE), filed on Dec. 12, 2018.
Prior Publication US 2022/0056186 A1, Feb. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C08F 290/06 (2006.01); C25B 13/08 (2006.01); H01G 11/52 (2013.01); H01G 11/84 (2013.01); H01M 8/0239 (2016.01); H01M 8/10 (2016.01); H01M 8/1023 (2016.01); H01M 8/18 (2006.01); H01M 50/403 (2021.01); H01M 50/414 (2021.01); H01M 50/417 (2021.01); H01M 50/42 (2021.01); H01M 50/44 (2021.01); H01M 50/489 (2021.01)
CPC C08F 290/062 (2013.01) [C25B 13/08 (2013.01); H01G 11/52 (2013.01); H01G 11/84 (2013.01); H01M 8/0239 (2013.01); H01M 8/1023 (2013.01); H01M 8/18 (2013.01); H01M 50/403 (2021.01); H01M 50/414 (2021.01); H01M 50/417 (2021.01); H01M 50/42 (2021.01); H01M 50/44 (2021.01); H01M 50/489 (2021.01); C08F 2810/20 (2013.01); H01M 2008/1095 (2013.01)] 17 Claims
 
1. A separator for an electrochemical energy device, comprising:
a porous substrate with a comb polymer,
the comb polymer containing several lateral chains that are covalently bonded to the polymer main chain,
wherein at least one of the lateral chains has at least one Lewis-acid or Lewis-base functionality,
wherein the separator has a Gurley value of at least 500 s or wherein the air permeability of the separator cannot be measured.