Patent SG-11201903731Y-A (SG)
Title: Non-flammable sodium-ion batteries
Inventor: PALANI BALAYA
IPC: H01M10/056
Filed: 2017-10-26
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 03 May 2018 (03.05.2018) WIP0 I PCT omit °nolo omm mono En oimIE (10) International Publication Number WO 2018/080399 Al (51) International Patent Classification: H01M 10/26 (2006.01) H01M 10/056 (2010.01) (21) International Application Number: PCT/SG2017/050539 (22) International Filing Date: 26 October 2017 (26.10.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/412,893 26 October 2016 (26.10.2016) US (71) Applicant: NATIONAL UNIVERSITY OF SINGA- PORE [SG/SG]; 21 Lower Kent Ridge Road, Singapore 119077 (SG). (72) Inventors: PALANI, Balaya; c/o National University of Singapore, Faculty of Engineering/Department of, Mechan- ical Engineering, 21 Lower Kent Ridge Road, Singapore 119077 (SG). RUDOLA, Ashish; c/o National University of Singapore, Faculty of Engineering/Department of, Me- chanical Engineering, 21 Lower Kent Ridge Road, Singa- pore 119077 (SG). DU, Kang; c/o National University of Singapore, Faculty of Engineering/Department of, Mechan- ical Engineering, 21 Lower Kent Ridge Road, Singapore 119077 (SG). GAJJELA, Satyanarayana Reddy; c/o Na- tional University of Singapore, Faculty of Engineering/De- partment of, Mechanical Engineering, 21 Lower Kent Ridge Road, Singapore 119077 (SG). LAW, Lee Lam, Markas; c/o National University of Singapore, Faculty of Engi- neering/Department of, Mechanical Engineering, 21 Lower Kent Ridge Road, Singapore 119077 (SG). (74) Agent: KINNAIRD, James Welsh; Marks & Clerk Singa- pore LLP, Tanjong Pagar, P 0 Box 636, Singapore 910816 (SG). (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, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, 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, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 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. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, (54) Title: NON-FLAMMABLE SODIUM-ION BATTERIES 0.20 0.15 0 10 - 0.05 - 0.00- • ;-0 05 - I-0.10.. -0.15 CV of Al WE vs Na Metal. CE in half cell 4t - 1.M NaC10 4 in EC:PC (1:1 v/v 1M NaBF 4 in Tetraglyme Cycle 1. 10 mV/s; 0.0 - 5.0 V WE — Working Electrode CE — Counter Electrode -0.2,0 'T 7 7 1 1 t t • t 0.0 0.5 1.0 13 2.0 23 3.0 3.5 4.0 4.5 5.0 Voltage vs Na/Na + / FIG. 1 1-1 C 4 \") O O GC 1-1 (57) : Disclosed herein is a non-flammable sodium-ion battery having a cathode and an anode and which uses an electrolyte that includes NaBF4 and a glyme solvent, where the battery has an average voltage of from 1.5 V to 6.0 V and has a coulombic efficiency C after 5 charge/discharge cycles of at least 90%. [Continued on next page] WO 2018/080399 Al MIDEDIMOMOIDEIREEMOOMMMOIMIDOHICHIMINHOIS UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, 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, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: of inventorship (Rule 4.17(iv)) Published: — with international search report (Art. 21(3))