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(11)

EP 3 931 900 A1

(12)

(43) Date of publication: 05.01.2022 Bulletin 2022/01 (21) Application number: 20705712.6 (22) Date of filing: 19.02.2020

(51) International Patent Classification (IPC):  H01M 10/052(2010.01) C01F 7/00(2006.01) C01G 15/00(2006.01) H01M 10/42(2006.01) C01G 9/00(2006.01) C01F 5/00(2006.01) C01F 11/00(2006.01) H01M 10/0562(2010.01) C01G 3/00(2006.01) C01G 17/00(2006.01) (52) Cooperative Patent Classification (CPC): C01F 7/54; C01P 2002/72; H01M 10/052; H01M 2300/008; C01F 11/00; Y02E 60/10; H01M 10/0562; C01G 15/006; C01F 5/00; H01M 10/4235 (86) International application number: PCT/EP2020/054323 (87) International publication number: WO 2020/173781 (03.09.2020 Gazette 2020/36)

(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: 27.02.2019 EP 19159662 (71) Applicant: Technische Universität Graz 8010 Graz (AT)	(72) Inventor: RETTENWANDER, Daniel 8044 Graz (AT) (74) Representative: Patentanwaltskanzlei Matschnig & Forsthuber OG  Biberstraße 22 Postfach 36 1010 Wien 1010 Wien (AT)