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1. (WO2018104942) SUPERCAPACITOR COMPRISING LOW-PURITY CARBON ELECTRODE AND AQUEOUS ELECTROLYTE
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Pub. No.: WO/2018/104942 International Application No.: PCT/IL2017/051321
Publication Date: 14.06.2018 International Filing Date: 06.12.2017
IPC:
H01G 11/34 (2013.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
G
CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
11
Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
22
Electrodes
30
characterised by their material
32
Carbon-based
34
characterised by carbonisation or activation of carbon
Applicants:
POCELL TECH LTD. [IL/IL]; 5 HaGavish Street 42507 Netanya, IL
Inventors:
TAL-GUTELMACHER, Ervin; IL
MOSHKOVICH, Mordechay; IL
STEIN, Tamir; IL
Agent:
WEBB, Cynthia; IL
WEBB, Cynthia; IL
BARZAM, Maty; IL
BOGIN, Liora; IL
BURSTEIN, Tal; IL
FINAROV, Igal; IL
GANOR, Sharon; IL
HORNIK, Vered; IL
NOAH, Eran; IL
POTASH, Shay; IL
SCHICKLER, Hedva; IL
SCHVARTZ, Iris; IL
SILVERMAN, Eran; IL
TRAVITSKY, Nina; IL
WEBB, Yael; IL
ZIPOR, Gadi; IL
Priority Data:
24942006.12.2016IL
Title (EN) SUPERCAPACITOR COMPRISING LOW-PURITY CARBON ELECTRODE AND AQUEOUS ELECTROLYTE
(FR) SUPERCONDENSATEUR COMPRENANT UNE ÉLECTRODE DE CHARBON DE FAIBLE PURETÉ ET ÉLECTROLYTE AQUEUX
Abstract:
(EN) The present invention provides a supercapacitor comprising at least one capacitor cell comprising a first porous electrode, a second porous electrode, an aqueous alkaline electrolyte being in contact with said first porous and second porous electrodes, and a separator separating the first porous electrode from the second porous electrode, wherein the first porous electrode comprises a low purity activated carbon having an ash content of above about 7 wt%, and wherein the first porous electrode is impregnated with aqueous alkaline electrolyte. The supercapacitor of the invention offers improved capacitance, high energetic efficiency and low leakage current. The present invention further provides methods for the preparation of the low- purity carbon electrode.
(FR) La présente invention concerne un supercondensateur comprenant au moins une cellule de condensateur comprenant une première électrode poreuse, une seconde électrode poreuse, un électrolyte alcalin aqueux étant en contact avec lesdites première et seconde électrodes poreuses, et un séparateur séparant la première électrode poreuse de la seconde électrode poreuse, la première électrode poreuse comprenant un charbon actif de faible pureté ayant une teneur en cendres supérieure à environ 7 % en poids, et la première électrode poreuse étant imprégnée d'un électrolyte alcalin aqueux. Le supercondensateur de l'invention offre une capacité améliorée, une efficacité énergétique élevée et un faible courant de fuite. La présente invention concerne en outre des procédés de préparation de l'électrode de charbon de faible pureté.
Designated States: 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
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)