A laminated article having a first layer and a second layer. Each layer has a porous carbon structure and a porous polymer. The pores of the two porous polymers are from 1 nanometer to 10 microns in diameter, and the two porous polymers have different pore size distributions. A method of making the laminated article by hot-pressing the two or more layers. The article may be used in an electrochemical cell.

A laminated article having a first layer and a second layer. Each layer has a porous carbon structure and a porous polymer. The pores of the two porous polymers are from 1 nanometer to 10 microns in diameter, and the two porous polymers have different pore size distributions. A method of making the laminated article by hot-pressing the two or more layers. The article may be used in an electrochemical cell.

The invention relates to a method for producing an electrode stack for a battery cell, comprising the following steps: providing a ribbon-shaped anode element (45), providing a ribbon-shaped cathode element (46), providing a first ribbon-shaped separator element (16), producing a ribbon-shaped composite element (50) by means of joining together the cathode element (46), the anode element (45) and the first separator element (16), simultaneously cutting the composite element (50) so as to produce multiple plate-shaped composite segments, stacking the produced composite segments to form a segment stack, stacking multiple segment stacks. The invention relates to a battery cell that comprises at least one electrode stack that is produced according to the method in accordance with the invention.

The invention features an electrochemical cell having an anode and a cathode; wherein at least one of the anode and cathode includes a solid ionically conducting polymer material that can ionically conduct hydroxyl ions.

The invention features an electrochemical cell having an anode and a cathode; wherein at least one of the anode and cathode includes a solid ionically conducting polymer material that can ionically conduct hydroxyl ions.

A method for forming a battery structure includes texturing an anode packaging material to form a first textured surface, depositing one or more metal layers including an anode metal on the first textured surface and forming a separator on the anode metal. It also includes texturing a cathode packaging material to form a second textured surface, depositing a cathode metal on the second textured surface, and forming an electrolyte binder paste on the cathode metal, which contacts the separator with any gap being filled with electrolyte.

A method for forming a battery structure includes texturing an anode packaging material to form a first textured surface, depositing one or more metal layers including an anode metal on the first textured surface and forming a separator on the anode metal. It also includes texturing a cathode packaging material to form a second textured surface, depositing a cathode metal on the second textured surface, and forming an electrolyte binder paste on the cathode metal, which contacts the separator with any gap being filled with electrolyte.

An alkaline secondary battery includes at least a case, a positive electrode, a negative electrode, and an electrolyte solution. The case accommodates the positive electrode, the negative electrode, and the electrolyte solution. The positive electrode includes manganese dioxide and nickel hydroxide. The negative electrode includes a hydrogen storage alloy.

An alkaline secondary battery includes at least a case, a positive electrode, a negative electrode, and an electrolyte solution. The case accommodates the positive electrode, the negative electrode, and the electrolyte solution. The positive electrode includes manganese dioxide and nickel hydroxide. The negative electrode includes a hydrogen storage alloy.

A positive electrode active material includes: a composite particle that includes a particle containing a lithium transition metal composite oxide of Li and Co and a layer that is provided on a surface of the particle and includes an oxide of Li, Ni and Mn. Ni and Mn have a concentration distribution centered on the center from a surface of the composite particle, in a depth range in which a ratio d (%) satisfies 0.04%d0.20%, a mole fraction r.sub.n of Ni and a mole fraction r.sub.m of Mn are within ranges of 0.05r.sub.n and 0.05r.sub.m, respectively, and a ratio r.sub.n2/r.sub.n1 and a ratio r.sub.m2/r.sub.m1 are within ranges of 0.85r.sub.n2/r.sub.n11.0 and 0.85r.sub.m2/r.sub.m11.0, respectively.