A lithium cell includes a housing including a housing cup, a cover plate and an annular insulating sealing element, wherein the housing has an end-side cup base, a circumferential housing casing and a circular opening opposite the housing base and formed by an opening edge. The cover plate has a circumferential edge and closes the circular opening. The cell includes a pin-shaped negative electrode current collector electrically connected to the cover plate. The sealing element is fitted onto the edge of the cover plate. The sealing element insulates the cover plate and the housing cup from one another. The cell can be produced by the components being brought together in two preassembled units combined to form the cell.

Disclosed is a pin-type rechargeable battery having a micro diameter for increasing an energy density at a preset volume. The rechargeable battery includes: an electrode assembly formed by winding a second electrode around an external circumference of a first electrode disposed at a center thereof by interposing a separator; a case to receive the electrode assembly and an electrolyte solution therein and electrically connected to the second electrode; a terminal electrically connected to the first electrode and drawn outside of the case; and a gasket disposed between the terminal and an opening of the case to close the opening of the case.

An alkaline dry battery includes: a bottomed cylindrical case including: a bottom portion having a positive electrode terminal portion; and a cylindrical side portion; a hollow cylindrical positive electrode in internal contact with the case; a negative electrode that is packed in a hollow portion of the positive electrode and contains a negative electrode active material containing zinc; a separator interposed between the positive electrode and the negative electrode; an alkaline electrolyte solution; and a sealing unit. The alkaline electrolyte solution is contained in the positive electrode, the negative electrode, and the separator. The sealing unit has a negative electrode terminal portion, and covers an opening of the case. An additive is packed in a gap between the negative electrode and the sealing unit and/or a gap between the negative electrode and the bottom portion. The additive contains a polyethylene glycol compound with a melting point of 46 C. or more.

A battery includes: a cylindrical battery case; and an electrode body disposed in the battery case, and including a positive plate, a negative plate, and a separator disposed between the positive plate and the negative plate. A spacer formed of a dense body and an electrolyte storage space storing an electrolyte are provided between the electrode body and the battery case on one end or both ends of the battery case in an axial direction of the electrode body.

A battery includes: a cylindrical battery case; and an electrode body disposed in the battery case, and including a positive plate, a negative plate, and a separator disposed between the positive plate and the negative plate. A spacer formed of a dense body and an electrolyte storage space storing an electrolyte are provided between the electrode body and the battery case on one end or both ends of the battery case in an axial direction of the electrode body.

A battery includes: a cylindrical battery case; and an electrode body disposed in the battery case, and including a positive plate, a negative plate, and a separator disposed between the positive plate and the negative plate. A spacer formed of a dense body and an electrolyte storage space storing an electrolyte are provided between the electrode body and the battery case on one end or both ends of the battery case in an axial direction of the electrode body.

A surface-treated steel sheet, including: a steel sheet; and a nickel-cobalt-iron diffusion layer formed as an outermost surface layer on the steel sheet. When a content of Ni, a content of Co and a content of Fe of the nickel-cobalt-iron diffusion layer are determined based on a Ni intensity, a Co intensity and a Fe intensity each sequentially measured in the depth direction from the surface side of the nickel-cobalt-iron diffusion layer by a radio frequency glow discharge optical emission spectrometry, a content of Co at a specific depth position D, In.sub.Co_D, is 5% by mass or higher and a content of Fe at the specific depth position D, In.sub.Fe_D, is 11% by mass or higher, the specific depth position D being a position where the Ni intensity is 0.5% of the maximum value of the Ni intensity. Also disclosed is a method for manufacturing the surface-treated steel sheet.