摘要:
A modified Ti-V-Zr-Ni-Mn-Cr electrochemical hydrogen storage alloy which has at least one of the following characteristics: 1) an increased charge/discharge rate capability over that the base Ti-V-Zr-Ni-Mn-Cr electrochemical hydrogen storage alloy; 2) a formation cycling requirement which is reduced to one tenth that of the base Ti-V-Zr-Ni-Mn-Cr electrochemical hydrogen storage alloy; 3) no chemical/thermal activation of the modified alloy is required to attain full operating capacity as is required by the base Ti-V-Zr-Ni-Mn-Cr electrochemical hydrogen storage alloy: and 4) an oxide surface layer having a higher electrochemical hydrogen storage catalytic activity than the base Ti-V-Zr-Ni-Mn-Cr electrochemical hydrogen storage alloy.
摘要:
Disordered Multicomponent hydrogen storage material characterized by extraordinarily high storage capacity due to a high density of useable hydrogen storage sites (greater than 1023 defect sites/cc) and/or an extremely small crystallite size, as shown on the graph in the figure. The hydrogen storage material can be employed for electrochemical, fuel cell and gas phase applications. The material may be selected from either of the modified LaNi¿5? or modified TiNi families formulated to have a crystallite size of less than 200 Angstroms and most preferably less than 100 Angstroms.
摘要:
A solid state battery including at least one multilayered battery cell comprising: 1) a layer of negative electrode material; 2) a layer of positive electrode material; and 3) a layer of perovskite-type oxide material disposed between the layer of positive electrode material and the layer of negative electrode material, where said layer of perovskite-type oxide material is electrically insulating and capable of readily conducting or transporting protons.
摘要:
A modified Ti-V-Zr-Ni-Mn-Cr electrochemical hydrogen storage alloy which has at least one of the following characteristics: 1) an increased charge/discharge rate capability over that the base Ti-V-Zr-Ni-Mn-Cr electrochemical hydrogen storage alloy; 2) a formation cycling requirement which is reduced to one tenth that of the base Ti-V-Zr-Ni-Mn-Cr electrochemical hydrogen storage alloy; 3) no chemical/thermal activation of the modified alloy is required to attain full operating capacity as is required by the base Ti-V-Zr-Ni-Mn-Cr electrochemical hydrogen storage alloy: and 4) an oxide surface layer having a higher electrochemical hydrogen storage catalytic activity than the base Ti-V-Zr-Ni-Mn-Cr electrochemical hydrogen storage alloy.
摘要:
A composite positive electrode material for use in electrochemical cells. The composite material may comprise a particle of positive electrode material, and a conductive material at least partially embedded within the particle of positive electrode material. The material may comprise a particle of positive electrode material, and a nucleating particle at least partially embedded therein.
摘要:
A modified A2B7 type hydrogen storage alloy having reduced hysteresis. The alloy consists of a base AXBy hydrogen storage alloy, where A includes at least one rare earth element and also includes magnesium, B includes at least nickel, and the atomic ratio of x to y is between 1:2 and 1:5. The base alloy is modified by the addition of at least one modifier element which has an atomic volume less than about 8 cm3/mole, and is added to the base alloy in an amount sufficient to reduce the absorption/desorption hysteresis of the alloy by at least 10% when compared with the base alloy.