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(11)

EP 4 093 701 A1

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(43) Date of publication: 30.11.2022 Bulletin 2022/48 (21) Application number: 21701877.9 (22) Date of filing: 25.01.2021

(51) International Patent Classification (IPC):  C01C 1/04(2006.01) C25B 11/051(2021.01) H01M 4/86(2006.01) H01M 8/04828(2016.01) C25B 1/27(2021.01) C25B 1/01(2021.01) C25B 15/08(2006.01) H01M 8/04119(2016.01) H01M 8/0656(2016.01) (52) Cooperative Patent Classification (CPC): H01M 4/86; H01M 8/04843; H01M 8/04126; H01M 8/0656; C01C 1/04; C25B 1/27; C25B 15/087; Y02E 60/50 (86) International application number: PCT/EP2021/051630 (87) International publication number: WO 2021/148677 (29.07.2021 Gazette 2021/30)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 24.01.2020 GB 202001017 (71) Applicant: Katholieke Universiteit Leuven 3000 Leuven (BE)	(72) Inventors: MARTENS, Johan 3001 Leuven (BE) HOLLEVOET, Lander 3001 Leuven (BE) (74) Representative: Beck, Michaël Andries T.  IPLodge bvba Technologielaan 9 3001 Heverlee 3001 Heverlee (BE)