A secondary battery includes an electrode assembly, a battery case surrounding the electrode assembly, and a sealing member located between the electrode assembly and the battery case. The sealing member includes polymer particles that are configured to expand in all directions.

A secondary battery includes an electrode assembly, a battery case surrounding the electrode assembly, and a sealing member located between the electrode assembly and the battery case. The sealing member includes polymer particles that are configured to expand in all directions.

A feedthrough assembly for an implantable medical device includes a housing, a solid insert, one or more conductive elements, a metal filler, and a non-corrosive sealant. The housing defines a central cavity through a height of the housing. The solid insert is disposed within the central cavity of the housing. The one or more conductive elements extend through one or more apertures defined within the solid insert and extend through the central cavity of the housing. The metal filler is disposed within a joint defined by an outer surface of the solid insert and an inner surface of the housing that defines the central cavity. The non-corrosive sealant coats a top surface of the metal filler to inhibit corrosion of the metal filler.

A feedthrough assembly for an implantable medical device includes a housing, a solid insert, one or more conductive elements, a metal filler, and a non-corrosive sealant. The housing defines a central cavity through a height of the housing. The solid insert is disposed within the central cavity of the housing. The one or more conductive elements extend through one or more apertures defined within the solid insert and extend through the central cavity of the housing. The metal filler is disposed within a joint defined by an outer surface of the solid insert and an inner surface of the housing that defines the central cavity. The non-corrosive sealant coats a top surface of the metal filler to inhibit corrosion of the metal filler.

An electrically conductive base includes a holding body and covering particles. The holding body includes a first super engineering plastic having non-crystallinity. The covering particles are dispersed in the holding body, and each include a center part and a covering part. The center part includes an electrically conductive material. The covering part covers a surface of the center part and includes a second super engineering plastic having crystallinity.

An electrically conductive base includes a holding body and covering particles. The holding body includes a first super engineering plastic having non-crystallinity. The covering particles are dispersed in the holding body, and each include a center part and a covering part. The center part includes an electrically conductive material. The covering part covers a surface of the center part and includes a second super engineering plastic having crystallinity.

A unit includes an electrode positioned between a first separator and a second separator in a stack. A first adhesive is positioned between the electrode and at least one of the first and second separators, and a second adhesive is positioned between the first separator and the second separator. The first adhesive composition has a degree of dispersion in an electrolyte that is larger than a degree of dispersion of the second adhesive composition in the electrolyte.

A unit includes an electrode positioned between a first separator and a second separator in a stack. A first adhesive is positioned between the electrode and at least one of the first and second separators, and a second adhesive is positioned between the first separator and the second separator. The first adhesive composition has a degree of dispersion in an electrolyte that is larger than a degree of dispersion of the second adhesive composition in the electrolyte.

A resin sealing gasket 10 to be incorporated in an alkaline battery 1 housing a power generation element (3 to 5) in a cylindrical battery can 2 closed at a bottom, the sealing gasket configured to insulate a top opening of the battery can and a negative electrode terminal plate 7 from each other. The sealing gasket includes: an outer periphery part 14 standing upward from the rim of a disc-shaped partition part 13; a boss part 11 in a hollow cylindrical shape enabling a rod-shaped negative electrode current collector 6 to stand at the center of the partition part; and a thin-walled portion 15 formed in a groove shape along the outer periphery of the boss part and being thinner than other portions of the partition part.

A resin sealing gasket 10 to be incorporated in an alkaline battery 1 housing a power generation element (3 to 5) in a cylindrical battery can 2 closed at a bottom, the sealing gasket configured to insulate a top opening of the battery can and a negative electrode terminal plate 7 from each other. The sealing gasket includes: an outer periphery part 14 standing upward from the rim of a disc-shaped partition part 13; a boss part 11 in a hollow cylindrical shape enabling a rod-shaped negative electrode current collector 6 to stand at the center of the partition part; and a thin-walled portion 15 formed in a groove shape along the outer periphery of the boss part and being thinner than other portions of the partition part.