(19)

(11)

EP 4 260 396 A2

(12)

(88) Date of publication A3: 04.08.2022 (43) Date of publication: 18.10.2023 Bulletin 2023/42 (21) Application number: 21844584.9 (22) Date of filing: 13.12.2021

(51) International Patent Classification (IPC):  H01M 10/0525(2010.01) H01M 10/0568(2010.01) H01M 4/36(2006.01) H01M 4/587(2010.01) H01M 10/0567(2010.01) H01M 10/0569(2010.01) H01M 4/38(2006.01) (52) Cooperative Patent Classification (CPC): H01M 10/0525; H01M 10/0569; H01M 10/0568; H01M 2300/0037; H01M 2300/004; H01M 2300/0042; H01M 2300/0034; H01M 4/386; H01M 4/587; H01M 4/364; H01M 10/0567; Y02E 60/10 (86) International application number: PCT/US2021/072875 (87) International publication number: WO 2022/126139 (16.06.2022 Gazette 2022/24)

(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: 11.12.2020 US 202063124441 P 10.12.2021 US 202117643737 (71) Applicant: Sila Nanotechnologies Inc. Alameda, California 94501 (US)	(72) Inventors: YUSHIN, Gleb Alameda, California 94501 (US) TURCHENIUK, Kostiantyn Alameda, California 94501 (US) KIM, Judith Alameda, California 94501 (US) BRITT, David Alameda, California 94501 (US) (74) Representative: ip21 Ltd  Central Formalities Department Suite 2 The Old Dairy Elm Farm Business Park Wymondham Norwich, Norfolk NR18 0SW Norwich, Norfolk NR18 0SW (GB)