A battery comprising a cathode and the anode compartments can be completely isolated from each other and thus preventing migration of soluble polysulfide anions from cathode to anode compartment by a novel cell design that involves enclosing either or both the cathode or the anode in sealed cation exchange polymer pouch prior to stacking and assembling the pouch cell.

The present disclosure discloses a button cell, and a method for welding electrode tabs to a pole shell of the button cell. The button cell includes the pole shell and an electric core. The pole shell consists of an anode shell and a cathode shell. The button cell further comprises at least one metal sheet. A cathode tab and/or an anode tab of the electric core is/are welded to the metal sheet, and the metal sheet is then welded to the cathode shell and/or the anode shell. The button cell manufactured by the invention has a complete surface, and can avoid phenomena such as electrolyte leakage and surface bulging caused by the rupture of the polar shell.

The present invention discloses a rechargeable button cell, which includes an anode shell, a cathode shell, and a coiled electric core which is located in a receiving cavity and includes an anode tab and a cathode tab. The anode tab includes a first connection portion, and a first folding portion that is folded from the first connection portion to the lower side of the first connection portion. The first folding portion is welded to a bottom wall from the interior of the anode shell. The cathode tab includes a second connection portion, and a second folding portion that is folded from the second connection portion to the upper side of the second connection portion. The second folding portion is welded to a top wall from the interior of the cathode shell.

The present disclosure discloses a button cell, and a method for welding electrode tabs to a pole shell of the button cell. The button cell includes the pole shell and an electric core. The pole shell consists of an anode shell and a cathode shell. The button cell further comprises at least one metal sheet. A cathode tab and/or an anode tab of the electric core is/are welded to the metal sheet, and the metal sheet is then welded to the cathode shell and/or the anode shell. The button cell manufactured by the invention has a complete surface, and can avoid phenomena such as electrolyte leakage and surface bulging caused by the rupture of the polar shell.

A battery comprising a cathode and the anode compartments can be completely isolated from each other and thus preventing migration of soluble polysulfide anions from cathode to anode compartment by a novel cell design that involves enclosing either or both the cathode or the anode in sealed cation exchange polymer pouch prior to stacking and assembling the pouch cell.

An alkaline secondary battery having excellent charge-discharge cycle characteristics is provided. The alkaline secondary battery includes a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. The positive electrode contains a silver oxide. The negative electrode contains zinc-based particles selected from the group consisting of zinc particles and zinc alloy particles. The separator holds an alkaline electrolyte solution. An anion conductive membrane is disposed between the negative electrode and the separator. The anion conductive membrane includes a polymer as a matrix and particles of at least one metal compound selected from the group consisting of metal oxides, metal hydroxides, metal carbonates, metal sulfates, metal phosphates, metal borates, and metal silicates, which are dispersed in the matrix.

An alkaline secondary battery having excellent charge-discharge cycle characteristics is provided. The alkaline secondary battery includes a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. The positive electrode contains a silver oxide. The negative electrode contains zinc-based particles selected from the group consisting of zinc particles and zinc alloy particles. The separator holds an alkaline electrolyte solution. An anion conductive membrane is disposed between the negative electrode and the separator. The anion conductive membrane includes a polymer as a matrix and particles of at least one metal compound selected from the group consisting of metal oxides, metal hydroxides, metal carbonates, metal sulfates, metal phosphates, metal borates, and metal silicates, which are dispersed in the matrix.

A button-type secondary battery includes an electrode assembly in which a negative electrode, a separator, and a positive electrode are layered wound in a state of being layered; a lower can in which the electrode assembly is mounted, and a space portion is defined as a surplus space in addition to a space in which the electrode assembly is mounted; an upper can coupled to the lower can to close the lower can in a state in which the electrode assembly is mounted in the lower can, and an electrolyte is injected; and a swelling member mounted in the lower can in a state of being coupled to an outer surface of the electrode assembly. When the electrolyte is injected, the swelling member absorbs the electrolyte to be expanded in volume within the space portion.