A positive electrode current collector for a lithium secondary battery includes a tab extending from a positive electrode current collector substrate. An anti-corrosion layer made of one selected from the group consisting of a primer layer, a conductive polymer layer, and a conductive epoxy layer is formed over the entire surface of the tab. A positive electrode of a lithium secondary battery includes the positive current collector.

A negative electrode plate is provided with a current collecting foil and an active material layer. The active material layer formed on the current collecting foil includes flake graphite particles and a binder resin in a manner that the flake graphite particles are bound to one another and the flake graphite particles and the current collecting foil are bound by the heat-melted binder resin, and a peak intensity ratio by an XRD analysis of the active material layer is 130 or less.

A bipolar electrode comprising a cathode substrate loaded with a halogen complexing agent that has a structure of formula Q.sup.+(R.sup.A)(R.sup.B)(R.sup.C)(R.sup.D)X.sup.−, is disclosed. The bipolar electrode also comprises a bipolar electrode plate having a cathode surface and an anode surface, wherein the cathode surface opposes the anode surface. The cathode surface at least partially contacts the cathode substrate. An electrochemical cell and a battery stack comprising the bipolar electrode, and a process for manufacturing the bipolar electrode are also disclosed.

An electrochemical energy storage cell includes a first electrically insulating substrate and a first electrical conductor layer extending on an area of the first electrically insulating substrate, a second electrically insulating substrate and a second electrical conductor layer extending on an area of the second electrically insulating substrate, a first electrode layer composed of positive electrode material, a second electrode layer composed of negative electrode material, a first separator layer, a stacked arrangement of the layers: the first electrically insulating substrate—the first electrical conductor layer—the first electrode layer—the first separator layer—the second electrode layer—the second electrical conductor layer—the second electrically insulating substrate, a first electrolyte enabling an ion flow between the electrode layers, an electrode region with the stacked arrangement of the electrode layers and a supercapacitor region, a second separator layer, a second electrolyte enabling an ion flow between the supercapacitor layers.

The present relates to a positive electrode (1) for a non-aqueous electrolyte secondary battery, comprising: a positive electrode current collector (11) comprising a positive electrode current collector main both (14) formed of a metal material; a positive electrode active material layer (12) provided on the positive electrode current collector (11), wherein the positive electrode active material layer (12) comprises a positive electrode active material having, on at least a. part of its surface, a coated section comprising a conductive material, the positive electrode active material layer (12) has a pore specific surface area of 5.0 to 10.0 m.sup.2/g and a central pore diameter of 0.06 to 0.15 μm, and a positive electrode (1) for a non-aqueous electrolyte secondary battery, comprising a positive electrode current collector (11) and a positive electrode active material layer (12) provided on the positive electrode current collector (11), wherein a thickness of the positive electrode active material layer (12) is 10 μm or more, the positive electrode active material layer (12) comprises a positive electrode active material, and a reflectance of a surface of the positive electrode active material layer (12) is 5.5% or higher in a wavelength range of 200 nm to 850 nm, and is not higher than a reflectance in the wavelength range of 200 nm to 850 nm peculiar to the positive electrode active material contained in the positive electrode active material layer (12).

Particular embodiments described herein provide for an electrode for a battery. The electrode including a current collector frame and an electrode substrate coupled to the current collector frame. An electrically conductive adhesive layer can be between the current collector frame and the electrode substrate and the electrically conductive adhesive layer can include a polymer binder and a conductive filler. The electrode substrate includes a porous material and active electrode material within the porous material. The porous material is copper foam, nickel foam, stainless steel foam, titanium foam, carbon felt, carbon cloth, or a carbon paper conductive polymer. The active electrode material includes one or more of manganese oxide, nickel oxide, vanadium oxide, titanium oxide, iron oxide, zinc metal, lead oxide, or lead.

A negative electrode plate includes a negative electrode current collector and active material layers disposed on at least one surface of the negative electrode current collector. The active material layers include a first active material layer and a second active material layer disposed on a surface of the first active material layer. The first active material layer includes a first active material, the second active material layer includes a second active material, and the active material layers satisfy α×CW.sub.2≤CW.sub.1.

[00001]$\alpha =\frac{d2}{d1}$

is a relative factor of layer spacings and 1≤α≤1.12. d.sub.1 and d.sub.2 are layer spacings corresponding to d002 peaks of the first and second active materials, respectively, in units of nm. CW.sub.1 and CW.sub.2 are masses per unit area of the first and second active material layers, respectively, in units of g/m.sup.2.

Methods of making a thick multilayer electrode for an electrochemical cell that cycles lithium are provided. The methods may include forming the multilayer electrode on a current collector by forming a plurality of electrode units to define an electrode stack on the current collector. Each unit of the plurality of electrode units comprises an electroactive material layer comprising a plurality of electroactive particles and an interfacial conductive material layer comprising a plurality of graphene nanoparticles. The electrode stack has a thickness of greater than or equal to about 100 micrometers and is capable of winding and withstanding a bend angle of greater than or equal to a radius of curvature of less than or equal to about 1 radian/inch while remaining substantially free of macrocracks.

A current collector of an electrochemical actuator is proposed, the current collector being coated with an interfacing layer, the interfacing layer being formed by coating on the current collector with a composition, the composition being formed by particles, at least 50% of the particles having a mean diameter by volume of less than or equal to 10 micrometers.

A carbon-sulfur composite including a carbonized metal-organic framework (MOF); and a sulfur compound introduced to at least a part of an outside surface and an inside of the carbonized metal-organic framework, wherein the carbonized metal-organic framework has a specific surface area of 2500 m.sup.2/g to 4000 m.sup.2/g, and the carbonized metal-organic framework has a pore volume of 0.1 cc/g to 10 cc/g, and a method for preparing the same.