Abstract: This invention discloses a method to make a light-weight and flexible electrode for electrochemical application especially for nickel hydride batteries. The method uses a conductive polymer as the substrate of an electrode. The conductive polymer can be an acidic or a basic type polymer. In the preparation of an electrode, the monomers of the conductive polymer can be used as the starting material. The electrode of this invention has about 20% more capacity than the electrode using nickel metal substrate.

Abstract: The present invention discloses a method to make a high rate, fast oxygen recombination and long life rechargeable metal oxide-hydride batteries, and in particular, rechargeable nickel-hydride batteries. The battery, according to this invention, is composed of a high rate, fast oxygen recombination and long life hydrogen storage electrode as a negative electrode. The hydrogen storage material is prepared to have a thin oxide top surface layer and a metal-rich subsurface layer, especially a nickel-rich subsurface layer. In the microstructure, it is preferable that it consists of a nickel-rich composition in one type of the grains and/or in grain boundaries. The hydride electrode made has an electrochemical capacity from 1.15 to 2.40 AH/cc. Before or after cell assembly, sealing, and/or using, the hydrogen storage electrode is chemically or electrochemically precharged to a state having a half-cell open circuit potential of -0.790 to -0.905 V vs.

Abstract: This invention disclosures a method to make an improved hydrogen/hydride electrode for electro-chemical applications. The method comprises the steps of: (1) preparing the slurry of hydrogen storage material; (2) pasting the slurry onto and/or into a substrate current collector to make a wet pasted electrode; (3) drying the wet pasted electrode; and (4) sintering the pasted electrode. The aforementioned method is very useful for the hydrogen storage alloy comprising of Ti, 2-70 at. %; Zr, 2-70 at. % and Ni, 5-80 at. %. It is also useful for a pseudo AB.sub.5 - or AB.sub.2 -type alloy. In particular, a high capacity hydrogen storage electrode comprising a multicomponent hydrogen storage alloy having composition represented by the formula: Ti.sub.a Zr.sub.b Ni.sub.c Nb.sub.y R.sub.z M.sub.

Abstract: 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: A.sub.a B.sub.b Ni.sub.c D.sub.y M.sub.x R.sub.z, 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.ltoreq.a.ltoreq.0.85, 0.01.ltoreq.b.ltoreq.0.65, 0.02.ltoreq.c.ltoreq.0.75, 0.ltoreq.y.ltoreq.0.30, 0.ltoreq.x.ltoreq.0.30, 0.ltoreq.z.ltoreq.0.30 and a+b+c+y+x+z=1.00; (2) preparing a high capacity (1.15-2.