The present invention relates to an electrode having a dual layer structure, a method for manufacturing the same, and a lithium secondary battery comprising the same, the electrode comprising: an electrode current collector; a middle layer formed on at least one side of the electrode current collector; and an electrode active material layer formed on the middle layer, wherein the middle layer comprises a first binder, wherein the electrode active material layer comprises an electrode active material and a second binder, and wherein the first binder and the second binder are the same kind of material but have different crystalline phases.

A method for making a thin film lithium ion battery is provided. A cathode material layer and an anode material layer are provided. A first carbon nanotube layer is formed on a surface of the cathode material layer to obtain a cathode electrode. A second carbon nanotube layer is formed on a surface of the anode material layer to obtain an anode electrode. A solid electrolyte layer is applied between the cathode electrode and the anode electrode to form a battery cell. At least one battery cell is then encapsulated in an external encapsulating shell.

A battery grid is disclosed. The battery grid includes a pattern of grid wires. The pattern includes a grid wire having a first segment with a first corrosion resistance and a second segment with a second corrosion resistance which is less than the first corrosion resistance. The second segment corrodes at a rate which is faster than the corrosion rate of the first segment so as to dynamically release internal stress and control grid growth of the battery grid during its service life. A battery includes said grid and a method of forming said grid are also disclosed.

A battery grid is disclosed. The battery grid includes a pattern of grid wires. The pattern includes a grid wire having a first segment with a first corrosion resistance and a second segment with a second corrosion resistance which is less than the first corrosion resistance. The second segment corrodes at a rate which is faster than the corrosion rate of the first segment so as to dynamically release internal stress and control grid growth of the battery grid during its service life. A battery includes said grid and a method of forming said grid are also disclosed.

A degassing device includes a piercing unit including a piercing body configured to be disposed on a first surface of the secondary battery to seal one side of the first surface of the secondary battery, and a piercing member configured to pierce the sealed one side of the first surface of the secondary battery to form an opening hole; and a gas discharge unit including a gas discharge body configured to be disposed on a second surface of the secondary battery to seal one side of the second surface of the secondary battery, and a gas discharge member configured to discharge the gas within the secondary battery to the outside through the opening hole, wherein the piercing member is configured to form the opening hole passing from the one side of the first surface to the one side of the second surface of the secondary battery.

A liquid lead storage battery includes a grid-like substrate of a positive electrode current collector that includes a frame bone forming four sides of a rectangular shape. Intermediate bones are connected to and present inward of the frame bone. At least some vertical intermediate bones present in a range between the center between a pair of vertical frame bones and the first vertical frame bone, which is the vertical frame bone on the side where a lug is absent, are first vertical intermediate bones extending from the lower to the upper frame bone sides while obliquely expanding from each other, and directly reach an upper frame bone. Angles formed by the first vertical intermediate bones and the upper frame bone on the first vertical frame bone side are less than 90°. Connection points of the first vertical intermediate bones to the upper frame bone are present only in this range.

A current collector plate assembly including a polygon-shaped electrically conductive substrate having a first surface and a second, opposing, surface, and at least three edges. A frame is coupled to regions of the first and second surfaces near the at least three edges of the substrate. A first cladding of a positive active materials layer covers an area of the first surface of the substrate. A second cladding of a negative active materials layer covers an area of the second surface of the substrate.

The present invention relates to a uni-electrogrid lead acid battery and process of making the same. More particularly, the present invention relates to uni-electro grid plate comprising a) tubular unielectro grid plate comprising of positive tubular grid plate and negative flat grid plate; or flat unielectrogrid plate comprising of positive flat grid plate and negative flat grid plate; b) non-conductive substrate comprising positive tubular grid with positive active material on its first side and negative flat grid with negative active material on its second side; or positive flat grid with positive active material on its first side and negative flat grid with negative active material on its second side; c) at least single in one side of the grid or multiple interconnectors placed between the positive and negative grid; and d) sealant. Also, it provides tubular unielectro grid plate or flat unielectrogrid plate and process for preparing the same.

A pasting carrier for a lead-acid battery. The pasting carrier includes a nonwoven fiber mat having a thickness between 5 and 50 mils, the nonwoven fiber mat being composed of a plurality of entangled glass microfibers.

A pasting carrier for a lead-acid battery. The pasting carrier includes a nonwoven fiber mat having a thickness between 5 and 50 mils, the nonwoven fiber mat being composed of a plurality of entangled glass microfibers.