Disclosed is a flexible secondary battery comprising a lithium metal coated wire, a positive electrode wire spirally wound around an outer surface of the lithium metal coated wire, spaced apart at a predetermined interval, the positive electrode wire including a first porous coating layer formed on an outer surface, and a negative electrode wire spirally wound around the outer surface of the lithium metal coated wire in an alternating manner with the wound positive electrode wire corresponding to the predetermined interval, the negative electrode wire including a second porous coating layer formed on an outer surface.

Provided are a member for a sodium-ion secondary battery and a sodium-ion secondary battery both of which are not susceptible to deterioration of charge/discharge cycle characteristics due to charge and discharge. A member 8 for a sodium-ion secondary battery includes: a solid electrolyte layer 2 having sodium-ion conductivity; a metallic sodium layer 6 disposed on one principal surface 2b of the solid electrolyte layer 2 and made of metallic sodium; and a metallic layer 5 provided between the solid electrolyte layer 2 and the metallic sodium layer 6 and made of a metal different from the metallic sodium.

An all-solid secondary battery includes: a cathode layer including a cathode active material; an anode layer including an anode current collector, a first anode active material layer, and a second anode active material layer between the anode current collector and the first anode active material layer; and a solid electrolyte layer between the cathode layer and the anode layer and including a solid electrolyte, wherein the first anode active material layer is adjacent to the solid electrolyte layer, has pores, and contains a metal or metal alloy capable of forming an alloy or a compound with lithium, and the second anode active material layer includes a second anode active material including a carbon anode active material and optionally a metal or metalloid anode active material.

An all-solid secondary battery includes: a cathode layer including a cathode active material; an anode layer including an anode current collector, a first anode active material layer, and a second anode active material layer between the anode current collector and the first anode active material layer; and a solid electrolyte layer between the cathode layer and the anode layer and including a solid electrolyte, wherein the first anode active material layer is adjacent to the solid electrolyte layer, has pores, and contains a metal or metal alloy capable of forming an alloy or a compound with lithium, and the second anode active material layer includes a second anode active material including a carbon anode active material and optionally a metal or metalloid anode active material.

The present disclosure relates to an integrated chip including a first metal layer over a substrate. A second metal layer is over the first metal layer. An ionic crystal layer is between the first metal layer and the second metal layer. A metal oxide layer is between the first metal layer and the second metal layer. The first metal layer, the second metal layer, the ionic crystal layer, and the metal oxide layer are over a transistor device that is arranged along the substrate.

The present disclosure describes energy storage (e.g., electrochemical) devices with customized architectures. Such customized architectures include multilayered electrode films and/or multidimensional electrode films.

The present invention relates to a polymer electrolyte for a secondary battery and a lithium secondary battery including the same, and to a polymer electrolyte for a secondary battery, which includes unit A derived from a poly(ethylene oxide)-based polymer, and a lithium secondary battery including the same.

The present invention relates to a pouch-shaped battery case manufacturing method including (a) locating a laminate sheet for pouch-shaped battery cases on a lower press die, (b) pressing the laminate sheet using an upper press die to form an electrode assembly receiving portion, (c) forming a venting guide portion in the bottom of the electrode assembly receiving portion, and (d) separating a pouch-shaped battery case having the electrode assembly receiving portion and the venting guide portion formed therein from the lower press die.

Disclosed is a method of manufacturing a pouch-shaped battery cell, the method including (a) forming an electrode assembly receiving portion in a laminate sheet to manufacture a preliminary battery case, (b) receiving an electrode assembly in the electrode assembly receiving portion and sealing other outer peripheries of the preliminary battery case excluding a first side outer periphery of the preliminary battery case, through which gas is discharged, (c) disposing a fixing jig at each of opposite end corner portions of a first side outer periphery of the electrode assembly receiving portion, (d) performing an activation process and a degassing process, (e) resealing the first side outer periphery of the electrode assembly receiving portion, and removing an end of the preliminary battery case, wherein step (d) to step (f) are performed in the state in which the corner portion is in tight contact with the inner surface of the fixing jig, which is technology capable of preventing the preliminary battery case from being deformed by force continuously applied to the preliminary battery case in a process of manufacturing the pouch-shaped battery cell.

An electrochemical cell and a method of preparing the electrochemical cell are provided. The electrochemical cell, such as a lithium battery or a solid-state lithium ion battery, includes a first electrode having a solid polymer electrolyte deposited thereon, wherein the solid polymer electrolyte comprises a microporous polymer swollen with an organic carbonate liquid and a dissociable lithium salt, and a second electrode. The method of preparing an electrochemical cell includes providing the first electrode, immersing the first electrode in an electrolyte solution, depositing the solid polymer electrolyte on the immersed first electrode, and attaching the second electrode to an exposed surface of the solid polymer electrolyte, thereby forming the electrochemical cell. During operation, the solid polymer electrolyte is capable of growing a passivating polymer layer at an interface between the first electrode and the solid polymer electrolyte.