(19)

(11)

EP 4 824 323 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24828528.0 (22) Date of filing: 12.12.2024

(51) International Patent Classification (IPC):  C25B 1/04(2021.01) C25B 9/77(2021.01) C25B 15/027(2021.01) C25B 9/19(2021.01) C25B 15/025(2021.01) C25B 15/029(2021.01) (52) Cooperative Patent Classification (CPC): C25B 9/19; C25B 9/77; C25B 15/025; C25B 15/027; C25B 15/029; C25B 1/04; Y02E 60/36 (86) International application number: PCT/NL2024/050661 (87) International publication number: WO 2025/127924 (19.06.2025 Gazette 2025/25)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 13.12.2023 EP 23216310 (71) Applicant: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO 2595 DA 's-Gravenhage (NL)	(72) Inventors: CHENG, Lun-Kai 2595 DA 's-Gravenhage (NL) XU, Man 2595 DA 's-Gravenhage (NL) (74) Representative: V.O.  P.O. Box 87930 2508 DH Den Haag 2508 DH Den Haag (NL)