The present disclosure relates to a separator for lithium secondary battery, a method for manufacturing same, and a lithium secondary battery including the same. The separator laminate according to one embodiment of the present disclosure includes: a plurality of separators; and adhesive layers located between mutually adjacent separators among the plurality of separators, wherein the adhesive layers are formed along the edges of the mutually adjacent separators so as to have a separation space between the mutually adjacent separators.

The present disclosure relates to a separator for lithium secondary battery, a method for manufacturing same, and a lithium secondary battery including the same. The separator laminate according to one embodiment of the present disclosure includes: a plurality of separators; and adhesive layers located between mutually adjacent separators among the plurality of separators, wherein the adhesive layers are formed along the edges of the mutually adjacent separators so as to have a separation space between the mutually adjacent separators.

The present invention provides a method for manufacturing an electrode assembly, comprising: interposing a plurality of first electrodes one by one, which are spaced apart from each other, between two separators; stacking a second electrode on each of outer surfaces of the separators on each of both sides of the first electrode at positions that are skipped by one of the plurality of positions on which the first electrodes are disposed to alternately continuously form a bi-cell, in which the second electrode/the separator/the first electrode/the separator/the second electrode are sequentially stacked, and a half-cell, in which the separator/the first electrode/the separator are sequentially stacked; cutting the stack into a unit cell in which one bi-cell and one half-cell are connected to each other; folding the unit cell so that the bi-cell and the half-cell are stacked; and stacking a plurality of folded unit cells to manufacture the electrode assembly.

A solid electrolyte-cathode assembly including a plurality of cathode layers spaced apart from each other in a first direction, and an electrolyte layer including an amorphous solid electrolyte and a crystalline solid electrolyte including a plurality of crystalline solid electrolyte particles, wherein the amorphous solid electrolyte is on a surface of a cathode layer of the plurality of cathode layers and the crystalline solid electrolyte is within the amorphous solid electrolyte.

A battery (10) includes a positive electrode (100) and a negative electrode (200). The positive electrode (100) includes an active material layer (120) (an active material layer (122) and an active material layer (124)) and a layer (300) (a layer (310) and a layer (320)). The layer (300) is over the active material layer (120). The layer (300) contains magnesium hydroxide particles (A). The magnesium hydroxide particles (A) are surface treated with stearic acid.

A battery (10) includes a positive electrode (100) and a negative electrode (200). The positive electrode (100) includes an active material layer (120) (an active material layer (122) and an active material layer (124)) and a layer (300) (a layer (310) and a layer (320)). The layer (300) is over the active material layer (120). The layer (300) contains magnesium hydroxide particles (A). The magnesium hydroxide particles (A) are surface treated with stearic acid.

To provide a solid-state battery capable of achieving a higher capacity. A solid-state battery includes a positive electrode and a negative electrode. The positive electrode and the negative electrode each includes a current collector that is a metal porous body having a spiral shape, and an electrode material mixture with which the current collector is filled. The positive electrode and the negative electrode are arranged in combination such that opposing faces of the positive electrode and the negative electrode alternately contact each other in an axial direction of the spiral shape. A pair of the positive electrode and the negative electrode having the above structure are housed in an exterior packaging body having a cylindrical shape to achieve a higher capacity of the solid-state battery.

Disclosed are an electrode assembly manufacturing method including sequentially stacking a first electrode, a separator, and a second electrode on a separation film having a continuous length to form mono-cells, each of the first electrode, the separator, and the second electrode being cut to a predetermined size from a winding roll so as to have a discontinuous structure, bonding the stacked mono-cells using a lamination device, locating a bi-cell at a folding start part, from which folding starts, on the separation film so as to be spaced apart from the mono-cells by a distance for folding, and performing folding in one direction with the bi-cell as a beginning, whereby it is possible to immediately perform the folding process without a separate preparation process after the lamination process in order to simplify the electrode assembly production process, and an electrode assembly manufactured by the method.

Disclosed are an electrode assembly manufacturing method including sequentially stacking a first electrode, a separator, and a second electrode on a separation film having a continuous length to form mono-cells, each of the first electrode, the separator, and the second electrode being cut to a predetermined size from a winding roll so as to have a discontinuous structure, bonding the stacked mono-cells using a lamination device, locating a bi-cell at a folding start part, from which folding starts, on the separation film so as to be spaced apart from the mono-cells by a distance for folding, and performing folding in one direction with the bi-cell as a beginning, whereby it is possible to immediately perform the folding process without a separate preparation process after the lamination process in order to simplify the electrode assembly production process, and an electrode assembly manufactured by the method.

The present disclosure includes systems, devices, and methods for operating a battery. The battery includes a power unit having a first electrode coupled to a first current collector and a second electrode. The first current collector is coupled to a first conductive member. The battery further includes a separator having a first portion interposed between the first electrode and the second electrode and a second portion positioned between the second electrode and the first conductive member. In some aspects, the second portion of the separator is configured to break responsive to receipt of a force to the battery to discharge the power unit safely without thermal runaway and catastrophic damage.