초록 ▼

A method to make new improved high capacity rechargeable hydride batteries comprising steps of (1) preparing an improved hydrogen storage material represented by the composition formula: AaBbNicDyMxRz, where A is one or more element chosen from the group of Ti, Zr, Mg; B is one or more elements chos

A method to make new improved high capacity rechargeable hydride batteries comprising steps of (1) preparing an improved hydrogen storage material represented by the composition formula: AaBbNicDyMxRz, where A is one or more element chosen from the group of Ti, Zr, Mg; B is one or more elements chosen from the group of Al, V, Mn, Nb, Si, Pd, and Ag; D is one or more elements chosen from the group of Cr, Mn, Fe, Co, Cu, Zn, Mo, W and Sn; R is one or more elements chosen from the group of C, B, Ca, Sb, Bi, Y, Hf, Ta, N, O, Ge, Ga and Mm, where Mm is mischmetal; M is one or more elements chosen from the group of Li, Na, K, Rb, Cs, P and S; and where a, b, c, y, x and z are defined by: 0.10≤a≤0.85, 0.01≤b≤0.65, 0.02≤c≤0.75, 0≤y≤0.30, 0≤x≤0.30, 0≤z≤0.30 and a+b+c+y+x+z=1.00; (2) preparing a high capacity (1.15-2.4 AH/cc) hydrogen storage hydride electrode comprising the alloy material aforementioned; (3) preparing a high capacity (0.45-0.75 AH/cc) metal oxide positive electrode; (4) assembling a rechargeable hydride battery.

대표청구항 ▼

A method for making a high capacity rechargeable hydride battery comprising the steps of: (1) preparing a hydrogen storage material and its hydride electrode thereof as a negative electrode, wherein said negative electrode comprises: a hydrogen storage material selected from the group having a compo

A method for making a high capacity rechargeable hydride battery comprising the steps of: (1) preparing a hydrogen storage material and its hydride electrode thereof as a negative electrode, wherein said negative electrode comprises: a hydrogen storage material selected from the group having a composition formula: AaBbNicDyMxRz and its hydride thereof; where A is at least one element selected from the group consisting of Ti, Zr and Mg; B is at least one element selected from the group consisting of Al, V, Mn, Si, Pd, and Ag; D is at least one element selected from the group consisting of Cr, Fe, Co, Cu, Zn, Nb, Mo, W, and Sn; R is at least one element selected from the group consisting of C, B, Ca, Sb, Bi, Sc, Y, Hf, Ta, O, N, Ge, Ga, and Mm, where Mm is mischmetal; M is at least one element selected from the group consisting of Li, Na, K, Rb, Cs, P, and S; and where the atomic mole ratios, a, b, c, x, y and z are defined by: 0.10≤a≤0.85, 0.01≤b≤0.65, 0.02≤c≤0.75, 0≤x≤0.30, 00.30, 00.30, a+b+c+x+y+z=1.00, and the atomic mole ratio of Ti is not greater than a, but is greater than zero; and if present, Mm is 0-8.0 at. %, O is 0-2.0 at. % and Mn is 0-15 at. %; and Zr is less than 30 at. %; wherein said step of preparing comprises homogeneously melting said component elements of said hydrogen storage material in a crucible selected from graphite, zirconia, alumina and water-cooled copper under less than 1 atm, protective atmosphere selected from inert gas, hydrogen, hydrocarbon gas and combinations thereof, wherein said negative hydrogen storage electrode is prepared by sintering under vacuum at 450°-950°C. without binder, or with one or more powder binders selected from the group of copper, aluminum, zinc, carbon black, PTFE, polyox, and methylcellulose; (2) preparing a positive metal oxide electrode having an electrochemical capacity from 0.45 to 0.75 AH/cc, wherein said positive electrode comprising a nickel oxide plus 1-15 wt. % cobalt oxide and 1-15 wt. % of conductive powder selected from the group consisting of Ni, Cu, C, Zn, Al, and combinations thereof; wherein said N/P ratio, the electrochemical capacity ratio of said negative electrode to said positive electrode, is between 1.0 and 2.0; (3) providing a separator selected from the group consisting of polyamide, polypropylene and polysulfone; (4) providing an electrolyte; (5) providing a container; and (6) assembling a rechargeable hydride battery, comprising the steps of: placing said separator between said negative and positive electrodes; placing said separator and said positive and negative electrodes in said container; and placing said electrolyte in said container in contact with said negative and positive electrodes and with said separator.