Patent SG-11201901880S-A (SG)
Title: Volume change compensated silicon-silicon oxide-lithium composite material having nano silicon particles embedded in a silicon: silicon lithium silicate composite matrix, and cyclical ex-situ manufacturing processes
Inventor: MATUS YURIY
IPC: H01M4/36
Filed: 2017-08-31
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property :::` , Organization 3 MD HIM 01E101011M 3E1 0 1011101fl 0111 00I1011 NH ill OEN International Bureau (10) International Publication Number (43) International Publication Date .....•\"\"- WO 2018/042361 Al 08 March 2018 (08.03.2018) WIP0 I PCT (51) International Patent Classification: CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, HO1M 4/36 (2006.01) C01B 33/02 (2006.01) DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, (21) International Application Number: HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, PCT/IB2017/055236 KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, (22) International Filing Date: OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 31 August 2017 (31.08.2017) SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (25) Filing Language: English (26) Publication Language: English (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, (30) Priority Data: GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, 62/383,372 02 September 2016 (02.09.2016) US UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, 62/478,535 29 March 2017 (29.03.2017) US TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, (71) Applicant: EOCELL LIMITED [CN/CN]; Room 804, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, Lap Fai Building, 6-8 Pottinger Street, Central, Hong Kong, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, Hong Kong (CN). KM, ML, MR, NE, SN, TD, TG). (72) Inventors: MATUS, Yuriy; 4025 Rennellwood Way, Pleasanton, California 94566 (US). HAN, Yongbong; 226 Published: Laidley Street, San Francisco, California 94131 (US). PAK, — with international search report (Art. 21(3)) — Michael; 2200 Lake Road, Belmont, California 94002 = (US). = (81) Designated States (unless otherwise indicated, for every _ kind of national protection available): AE, AG, AL, AM, — AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, = = = = (54) Title: VOLUME CHANGE COMPENSATED SILICON-SILICON OXIDE-LITHIUM COMPOSITE MATERIAL HAVING _ NANO SILICON PARTICLES EMBEDDED IN A SILICON: SILICON LITHIUM SILICATE COMPOSITE MATRIX, AND CY- _ CLICAL EX-SITU MANUFACTURING PROCESSES = (57) : A method for producing a volume change compensated silicon: silicon ox- 110 = = Produce Prelithiated SSLC Material Exhibiting Enhanced, Substantially Complete or Complete Lithiation ide: lithium composite (SSLC) material is disclosed. The method includes producing an initially prelithiated SSLC material; delithiating the initially prelithiated material to pro- duce delithiated least iteration Produce Partially Lithiated SSLC Material a SSLC material; and performing at one of a volume change compensation process involving: (a) re-prelithiating the delithiated SSLC material to pro- = 2 114 --) duce are-prelithiated SSLC material; and (b) delithiating the re-prelithiated SSLC material = = = Complete Reaction of Unreacted Lithium and SiO in the Partially x Lithiated SSLC Material to Produce Further Lithiated SSLC Material produced in (a), wherein at least one of the following is satisfied: (i) prior to performing the at least one iteration of the volume change compensation process the initially prelithi- ated SSLC material is essentially completely lithiated; and (ii) at least one iteration of the = - 120 -, 1 volume change compensation process produces a re-prelithiated SSLC material that is es- — L = Delithiate the Produced Prelithiated SSLC Material to Produce Completely DelithiatedSSLC Material Having Si Nano Particles Embedded in a Porous Plastically Deformable Li. SLC Matrix sentially completely prelithiated. In a fmal iteration of the volume change compensation process, delithiating the re-prelithiated SSLC material produced in (a) completely delithi- ates the re-prelithiated SSLC material to produce the volume change compensated SSLC material. The aforesaid is to, or ex situ with respect to, the fabri- process performed prior _ 130 i cation of an anode that contains the produced volume change compensated SSLC material. Filter / Wash / Dry the Delithiated SSLC Material Il 140 V; Mechanically Stabilize the Delithiated SSLC Material en el 150 i 71 . © GC Enhance the Electrical Conductivity of the Delithiated SSLC Material with Carbon / Carbon Based Matenal(s) (e g , Graphite) 11 © el FIG. 1 loo