Abstract:
An alkaline storage battery contains: a positive electrode; a negative electrode containing, as an active material, at least one of a metal capable of forming a dendrite and a metal compound thereof; and an alkaline electrolyte. The alkaline electrolyte contains a compound which is a chain saturated hydrocarbon at least partially having a hydrophilic functional group other than a hydroxyl group and having a molecular weight of 400 or more and less than 220000 in an amount of less than 15 g per 100 mL of the electrolyte.
Abstract:
An alkaline storage battery includes a spiral electrode group with a positive plate and a negative plate spirally wound with a separator interposed therebetween. The separator includes a plurality of sulfone group-containing regions. The plurality of sulfone group-containing regions are separated from one another in a winding direction, and disposed to face the positive plate or the negative plate.
Abstract:
Provided is a hydrogen storage alloy which is characterized in that two or more crystal phases having different crystal structures are layered in a c-axis direction of the crystal structures. The hydrogen storage alloy is further characterized in that a difference between a maximum value and a minimum value of a lattice constant a in the crystal structures of the laminated two or more crystal phases is 0.03 Å or less.
Abstract:
An alkaline storage battery includes a positive electrode, a negative electrode containing, as an active material, at least one of a metal capable of forming dendrites and a metal compound thereof, and an alkaline electrolyte solution, wherein a compound having a primary amino group and having no carboxyl group is contained in the alkaline electrolyte solution in an amount greater than or equal to 7% by volume.
Abstract:
A method for producing a sulfide solid electrolyte according to an embodiment of the present invention is a method for producing a sulfide solid electrolyte, including: preparing a composition containing P, S, N, an element A, and an element M; reacting the composition to obtain an intermediate; and heating the intermediate to obtain a sulfide solid electrolyte, where the composition includes a raw material compound containing N, the element A, and the element M. A represents at least one element selected from the group consisting of Li, Na, and K. M represents at least one element selected from the group consisting of Al, Ta, Si, Sc, Mg, Nb, B, Hf, C, P, Zr, and Ti.
Abstract:
Provided is a hydrogen storage alloy which is characterized in that two or more crystal phases having different crystal structures are layered in a c-axis direction of the crystal structures. The hydrogen storage alloy is further characterized in that a difference between a maximum value and a minimum value of a lattice constant a in the crystal structures of the laminated two or more crystal phases is 0.03 Å or less.
Abstract:
This disclosure provides a hydrogen storing alloy and a production method thereof. The hydrogen storing alloy has a chemical composition of a general formula R(1-x)MgxNiy, wherein R is one or more elements selected from rare earth elements comprising Y, x satisfies 0.05≦x≦0.3, and y satisfies 2.8≦y≦3.8. The ratio of the maximal peak intensity present in a range of 2θ=31°-33° to the maximal peak intensity present in a range of 2θ=41°-44° is 0.1 or less (including 0), as measured by X-ray diffraction in which a Cu-Kα ray is set as an X-ray source.
Abstract:
A storage battery includes a negative electrode including, as an active material, at least one of a metal capable of forming a dendrite and a metal compound thereof, a positive electrode, a separator, and an electrolyte containing an additive. In the storage battery, a concentration of the additive in the electrolyte in a region on a side of the negative electrode defined by the separator is higher than a concentration of the additive in a region on a side of the positive electrode.
Abstract:
A nickel hydroxide for an alkaline secondary battery, wherein the nickel hydroxide contains α-nickel hydroxide particles and β-nickel hydroxide particles, and the ratio of the β-nickel hydroxide to the total amount of the nickel hydroxide is less than 75% by mass.
Abstract:
An aspect of the present invention is a sulfide solid electrolyte that contains at least one element M selected from the group consisting of Al, Si, B, Mg, Zr, Ti, Hf, Ca, Sr, Sc, Ce, Ta, Nb, W, Mo, and V, and N and has a crystalline structure. Another aspect of the present invention is a sulfide solid electrolyte that contains Al and N and that has a crystalline structure.