An alkaline electrochemical cell has a central cathode having a corresponding cathode current collector electrically connected with a positive terminal of the electrochemical cell. The cathode current collector has a tubular shape, such as a cylindrical shape or rectangular shape, extending parallel with the length of the central cathode. The cathode current collector is embedded within the central cathode, such as at a medial point of a radius of the central cathode, thereby minimizing the distance between the cathode current collector and any portion of the central cathode, thereby increasing the mechanical strength of the cathode and facilitating charge transfer to the cathode current collector.

The alkaline battery of the present invention includes, as power generation components, a positive electrode containing silver oxide as a positive electrode active material, a negative electrode, a separator, and an alkaline electrolyte solution. At least one of the power generation components contains tellurium or a compound of tellurium. The total content of tellurium element contained in components housed in the battery is 0.4 parts by mass or more with respect to 100 parts by mass of the total amount of silver element in the positive electrode active material. The positive electrode is substantially free of cadmium.

A printed energy storage device includes a first electrode including zinc, a second electrode including manganese dioxide, and a separator between the first electrode and the second electrode, the first electrode, second, electrode, and separator printed onto a substrate. The device may include a first current collector and/or a second current collector printed onto the substrate. The energy storage device may include a printed intermediate layer between the separator and the first electrode. The first electrode, and the second electrode may include 1-ethyl-3-methylimidazolium tetrafluoroborate (C.sub.2mimBF.sub.4). The first electrode and the second electrode may include an electrolyte having zinc tetrafluoroborate (ZnBF.sub.4) and 1-ethyl-3-methylimidazolium tetrafluoroborate (C.sub.2mimBF.sub.4). The first electrode, the second electrode, the first current collector, and/or the second current collector can include carbon nanotubes. The separator may include solid microspheres.

A printed energy storage device includes a first electrode including zinc, a second electrode including manganese dioxide, and a separator between the first electrode and the second electrode, the first electrode, second, electrode, and separator printed onto a substrate. The device may include a first current collector and/or a second current collector printed onto the substrate. The energy storage device may include a printed intermediate layer between the separator and the first electrode. The first electrode, and the second electrode may include 1-ethyl-3-methylimidazolium tetrafluoroborate (C.sub.2mimBF.sub.4). The first electrode and the second electrode may include an electrolyte having zinc tetrafluoroborate (ZnBF.sub.4) and 1-ethyl-3-methylimidazolium tetrafluoroborate (C.sub.2mimBF.sub.4). The first electrode, the second electrode, the first current collector, and/or the second current collector can include carbon nanotubes. The separator may include solid microspheres.

An apparatus for separating battery plates includes a work surface for receiving a stack of battery plates, and an alignment mechanism for aligning the battery plates on the work surface. The work surface is movable between a first position in which it is angled with respect to a horizontal plane and a second position in which it is substantially aligned with the horizontal plane. When the work surface moves between the first and second position adjacent battery plates of the stack are displaced relative to each other.

An apparatus for separating battery plates includes a work surface for receiving a stack of battery plates, and an alignment mechanism for aligning the battery plates on the work surface. The work surface is movable between a first position in which it is angled with respect to a horizontal plane and a second position in which it is substantially aligned with the horizontal plane. When the work surface moves between the first and second position adjacent battery plates of the stack are displaced relative to each other.

An alkaline dry battery including: a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; and an alkaline electrolyte retained in the positive electrode, the negative electrode, and the separator. The negative electrode includes a negative electrode active material containing zinc, and an additive. The additive includes an aromatic carboxylic acid and tin powder.

An alkaline dry battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an alkaline electrolytic solution contained in the positive electrode, the negative electrode and the separator. The negative electrode includes a negative electrode active material including zinc, and an additive. The additive includes at least one selected from the group consisting of maleic acid, maleic anhydride and maleate salts.

A battery includes: a power generating element that includes a first electrode layer, a second electrode layer, and a solid electrolyte layer positioned between the first electrode layer and the second electrode layer; and an insulating member. A chamfered portion is provided at least in a part of corner portions of the power generating element. The insulating member covers at least a part of the chamfered portion.

The purpose of the present technology is to provide an electrode for power storage device and a power storage device that make it possible to involve more lithium ions in a charge-discharge reaction. A lithium-ion secondary battery has: a positive electrode current collector; a positive electrode active material layer on the positive electrode current collector; a negative electrode current collector; and a negative electrode active material layer on the negative electrode current collector. The negative electrode active material layer has a carbon nanowall. The carbon nanowall is capable of involving, in the charge-discharge reaction, two or more lithium ions per carbon atom in a single charge or discharge.