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(11)

EP 4 798 544 A1

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(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24794184.2 (22) Date of filing: 25.10.2024

(51) International Patent Classification (IPC):  C01G 53/00(2025.01) H01M 4/525(2010.01) H01M 4/505(2010.01) (52) Cooperative Patent Classification (CPC): C01G 53/54; H01M 4/505; H01M 4/525; C01P 2002/32; C01P 2002/60; C01P 2002/70; C01P 2004/03; C01P 2004/50; C01P 2004/61; C01P 2004/84; Y02E 60/10 (86) International application number: PCT/EP2024/080337 (87) International publication number: WO 2025/088191 (01.05.2025 Gazette 2025/18)

(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: 25.10.2023 EP 23205678 (71) Applicant: Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg Gemeinnützige Stiftung 70563 Stuttgart (DE)	(72) Inventors: NISAR, Umair 89073 Ulm (DE) AXMANN, Peter 89155 Erbach (DE) (74) Representative: Ter Meer Steinmeister & Partner  Patentanwälte mbB Nymphenburger Straße 4 80335 München 80335 München (DE)