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(11)

EP 3 718 159 A2

(12)

(88) Date of publication A3: 23.01.2020 (43) Date of publication: 07.10.2020 Bulletin 2020/41 (21) Application number: 18920051.2 (22) Date of filing: 30.11.2018

(51) International Patent Classification (IPC):  H01M 4/133(2010.01) H01M 4/62(2006.01) H01G 11/26(2013.01) H01M 4/1393(2010.01) H01M 4/587(2010.01) H01G 11/84(2013.01) H01G 11/34(2013.01) (86) International application number: PCT/US2018/063306 (87) International publication number: WO 2019/226195 (28.11.2019 Gazette 2019/48)

(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: 01.12.2017 US 201762593768 P 03.10.2018 US 201816151186 (71) Applicant: California Institute of Technology Pasadena, CA 91125 (US)	(72) Inventors: PORTELA, Carlos M. Pasadena, California 91125 (US) VYATSKIKH, Andrey Pasadena, California 91125 (US) GREER, Julia R. Pasadena, California 91125 (US) (74) Representative: Murgitroyd & Company  Murgitroyd House 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)