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(11)

EP 3 558 867 A1

(12)

(43) Date of publication: 30.10.2019 Bulletin 2019/44 (21) Application number: 17818147.5 (22) Date of filing: 20.12.2017

(51) International Patent Classification (IPC):  C01B 32/205(2017.01) D01F 9/22(2006.01) H01M 4/583(2010.01) (86) International application number: PCT/EP2017/083911 (87) International publication number: WO 2018/115177 (28.06.2018 Gazette 2018/26)

(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: MA MD TN (30) Priority: 23.12.2016 DE 102016015430 22.03.2017 DE 102017204803 (71) Applicant: SGL Carbon SE 65201 Wiesbaden (DE)	(72) Inventors: JUNG, Manfred 86405 Meitingen (DE) STEPPICH, Daniel 86405 Meitingen (DE) ÖTTINGER, Oswin 86405 Meitingen (DE) SCHMITT, Rainer 86405 Meitingen (DE)