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(11)

EP 4 062 470 A1

(12)

(43) Date of publication: 28.09.2022 Bulletin 2022/39 (21) Application number: 20891382.2 (22) Date of filing: 18.11.2020

(51) International Patent Classification (IPC):  H01M 6/18(2006.01) H01M 4/08(2006.01) H01M 10/058(2010.01) H01M 4/13(2010.01) H01M 10/0562(2010.01) (52) Cooperative Patent Classification (CPC): H01M 4/13; H01M 10/0562; Y02P 70/50; H01M 10/0565; H01M 10/0525; H01M 10/0585; H01M 4/139; H01M 2300/0094; H01M 2300/0071; H01M 2300/0082; H01M 4/62; Y02E 60/10 (86) International application number: PCT/US2020/060930 (87) International publication number: WO 2021/101915 (27.05.2021 Gazette 2021/21)

(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: 18.11.2019 US 201962936609 P (71) Applicant: Coreshell Technologies, Inc. Berkeley, CA 94705 (US)	(72) Inventors: BASU, Sourav, Roger Berkeley, CA 94705 (US) TAN, Jonathan Berkeley, CA 94705 (US) (74) Representative: Haseltine Lake Kempner LLP  Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)