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EP 4 274 921 A1

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(43) Date of publication: 15.11.2023 Bulletin 2023/46 (21) Application number: 22700744.0 (22) Date of filing: 10.01.2022

(51) International Patent Classification (IPC):  C25B 1/23(2021.01) C25B 9/15(2021.01) C25B 15/08(2006.01) C25B 11/057(2021.01) C25B 11/075(2021.01) C25B 15/029(2021.01) C25B 3/26(2021.01) C25B 9/19(2021.01) C25B 11/052(2021.01) C25B 11/065(2021.01) C25B 11/081(2021.01) (52) Cooperative Patent Classification (CPC): C25B 1/23; C25B 3/26; C25B 9/19; C25B 9/15; C25B 11/052; C25B 11/057; C25B 11/065; C25B 11/075; C25B 11/081; C25B 15/029; C25B 15/085 (86) International application number: PCT/EP2022/050323 (87) International publication number: WO 2022/148856 (14.07.2022 Gazette 2022/28)

(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: 11.01.2021 US 202163136068 P 11.03.2021 US 202163200513 P 25.03.2021 LU 102697 (71) Applicants: TOTALENERGIES ONETECH 92400 Courbevoie (FR) The Governing Council of the University of Toronto Toronto, Ontario M5G 1L5 (CA)

(72) Inventors: SARGENT, Edward Toronto, Ontario M5G 1L5 (CA) SINTON, David Toronto, Ontario M5G 1L5 (CA) XU, Yi Toronto, Ontario M5G 1L5 (CA) EDWARDS, Jonathan, P. Toronto, Ontario M5G 1L5 (CA) (74) Representative: Mellet, Valérie Martine  Patent 42 5, rue Dicks 4081 Esch-sur-Alzette 4081 Esch-sur-Alzette (LU)