Copper-based energy storage device and method

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(57) Abstract : An energy storage device (100) is provided that includes a caI00 thodic material in electrical communication with a separator. The cathodic material includes copper. The separator (104) has a first surface (106) that defines at least a portion of a first chamber (110), and a second surface (108) that defines a second chamber (112). The first chamber is in ionic communication with the second chamber through the separator. The separator has at least one of the following attributes : the separator is a composite of alumina and a rare earth oxide, or the separator is a composite of alumina and a transition metal oxide, or the separator comprises a plurality of grains, and the grains define grain boundaries that define 116 -L_114 interstitial spaces, and the interstitial spaces defined by the grain boundaries are free of sodium aluminate prior to an initial electrical charging of the energy storage device or are free of the cathodic material after the initial electrical charging of the energy storage device, or the separator comprises a continuous phase of an alkali-metal-ion conductor and a continuous phase of a ceramic oxygen-ion conductor. Agents : WINTER, Catherine, J. et al.; General Electric Company, Global Patent Operation, 187 Danbury Road, Suite 204, Wilton, CT 06897 (US). Designated States (unless otherwise indicated, for every kind of national protection available) : AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, 1D, 1L, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, T J, 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) : AR1PO (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), European (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, 1E, IS, IT, LT, LU, LV, MC, MT, NL, PL, PT, RO, SE, SI, SK, TR), OAPI (BF, B J, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG). Published : -- with international search report -- before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (88) Date of publication of the international search report : 23 October 2008