A button cell includes a packaging member and an electrode assembly. The packaging member includes an insulating wall, a first end cover, and a second end cover. The insulating wall is provided with a through accommodating cavity, and the first end cover and the second end cover are arranged at two ends of the accommodating cavity, respectively. The insulating wall is further provided with a first communication hole for communication between the accommodating cavity and an external environment of the packaging member. The electrode assembly is accommodated in the accommodating cavity and includes a first electrode plate and a second electrode. The packaging member further includes a first conductive terminal arranged at the first communication hole, which is electrically connected to the first electrode plate forming an outer tab of the button cell, and is arranged on a wall instead of an end cover.

A button cell includes a packaging member and an electrode assembly. The packaging member includes an insulating wall, a first end cover, and a second end cover. The insulating wall is provided with a through accommodating cavity, and the first end cover and the second end cover are arranged at two ends of the accommodating cavity, respectively. The insulating wall is further provided with a first communication hole for communication between the accommodating cavity and an external environment of the packaging member. The electrode assembly is accommodated in the accommodating cavity and includes a first electrode plate and a second electrode. The packaging member further includes a first conductive terminal arranged at the first communication hole, which is electrically connected to the first electrode plate forming an outer tab of the button cell, and is arranged on a wall instead of an end cover.

There is provided a method for producing a separator for an electricity storage device that includes a step of contacting a porous body formed from a silane-modified polyolefin-containing molded sheet with a base solution or acid solution, and a separator for an electricity storage device comprising a microporous film with a melted film rupture temperature of 180° C. to 220° C. as measured by thermomechanical analysis (TMA).

The present invention provides a lithium secondary battery that has high energy density and capacity and has excellent cycle characteristics. The present invention relates to a lithium secondary battery including a positive electrode current collector, a negative electrode that is free of a negative electrode active material, a separator that is disposed between the positive electrode current collector and the negative electrode, a positive electrode that is disposed between the positive electrode current collector and the separator and contains a positive electrode active material, and electrolytic solution, wherein the lithium secondary battery includes a layer containing an anion-absorbing conductive polymer between the positive electrode current collector and the separator.

The present invention provides a lithium secondary battery that has high energy density and capacity and has excellent cycle characteristics. The present invention relates to a lithium secondary battery including a positive electrode current collector, a negative electrode that is free of a negative electrode active material, a separator that is disposed between the positive electrode current collector and the negative electrode, a positive electrode that is disposed between the positive electrode current collector and the separator and contains a positive electrode active material, and electrolytic solution, wherein the lithium secondary battery includes a layer containing an anion-absorbing conductive polymer between the positive electrode current collector and the separator.

An electrode for an all-solid-state battery includes a current collector, a carbon material layer having an adhesive property, and an active material layer in this order in the thickness direction, and the carbon material layer contains a carbon material, a dispersion material, and a binder.

The present invention relates to a method for manufacturing an electrode assembly. The method for manufacturing the electrode assembly comprises: a step (a) of transferring a plurality of radical units one by one from a first set position to a second position; a step (b) of measuring a distance between a full width end that is an end of the first electrode in a full width direction and a full width end that is an end of the second electrode in a full width direction; a step (c) of measuring a distance (B1) from a reference point (O) of the second set position to the full width end of the first electrode of the first radical unit; a step (d) of stacking the second radical unit on the first radical unit; a step (e) of measuring a distance (B2) from the reference point (O) of the second set position to the full width end of the first electrode of the second radical unit; a step (f) of measuring a distance (C1) between the full length end of the first electrode of the first radical unit and the full width end of the second electrode of the second radical unit by adding the distances (B2, A2) to each other and subtracting the distance (B1) from the sum of the distances (B2, A2); and a step (g) of comparing the distances (C1, A1) to each other to determine whether stacking is defective.

The present invention relates to a method for manufacturing an electrode assembly. The method for manufacturing the electrode assembly comprises: a step (a) of transferring a plurality of radical units one by one from a first set position to a second position; a step (b) of measuring a distance between a full width end that is an end of the first electrode in a full width direction and a full width end that is an end of the second electrode in a full width direction; a step (c) of measuring a distance (B1) from a reference point (O) of the second set position to the full width end of the first electrode of the first radical unit; a step (d) of stacking the second radical unit on the first radical unit; a step (e) of measuring a distance (B2) from the reference point (O) of the second set position to the full width end of the first electrode of the second radical unit; a step (f) of measuring a distance (C1) between the full length end of the first electrode of the first radical unit and the full width end of the second electrode of the second radical unit by adding the distances (B2, A2) to each other and subtracting the distance (B1) from the sum of the distances (B2, A2); and a step (g) of comparing the distances (C1, A1) to each other to determine whether stacking is defective.

A cylindrical secondary battery includes: an electrode assembly including a positive electrode plate having a positive electrode multi-tab, a separator, and a negative electrode plate having a negative electrode multi-tab, the positive electrode plate, the separator, and the negative electrode plate being laminated and wound; a cylindrical can accommodating the electrode assembly; a cap plate coupled at an upper end of the cylindrical can and being electrically connected to the negative electrode multi-tab; and a positive electrode terminal protruding upwardly through the cap plate and being electrically connected to the positive electrode multi-tab.

A cylindrical secondary battery includes: an electrode assembly including a positive electrode plate having a positive electrode multi-tab, a separator, and a negative electrode plate having a negative electrode multi-tab, the positive electrode plate, the separator, and the negative electrode plate being laminated and wound; a cylindrical can accommodating the electrode assembly; a cap plate coupled at an upper end of the cylindrical can and being electrically connected to the negative electrode multi-tab; and a positive electrode terminal protruding upwardly through the cap plate and being electrically connected to the positive electrode multi-tab.