An electrode structure and an all-solid-state secondary battery, the electrode structure includes an anode current collector having first and second surfaces, the first surface including first and second portions, and a middle portion between the first and second portions, the first and second portions being oriented to face outwardly in opposite directions with the middle portion therebetween, and the anode current collector being folded such that the second surface faces inwardly in the anode current collector; first and second anode plate layers on the first surface; first and solid electrolyte layers on outer sides of the first and second anode plate layers; first and second cathode plate layers on outer sides of the first and second solid electrolyte layers; and an elastic sheet inside an interior space of the folded anode current collector.

An electrode structure for a battery includes a middle layer made of an electrically conductive perforated mesh having a top surface, a bottom surface, a plurality of interconnected electrically conductive segments and a plurality of perforations among adjacent ones of the interconnected segments. A top layer of an electrode material is disposed on the top surface, and a bottom layer of the electrode material is disposed on the bottom surface, such that the top and bottom layers are disposed in physical contact with each other through the perforations in the middle layer. A method of manufacturing the electrode structure includes providing the layer of perforated mesh, applying the top and bottom layers of electrode material to the top and bottom surfaces, and curing the top and bottom layers of electrode material using one or more of heat, electromagnetic radiation and convection to produce a layer of cured electrode structure.

The present disclosure provides the use of prelithiated hard carbon in the preparation of lean lithium metal anode electrode, the incorporation of the lean lithium metal anode electrode into full cells, and the evaluation of the electrochemical performances in the full cell under practical conditions. A full cell using the prelithiated hard carbon with lean lithium metal anode electrode and a high-capacity cathode can exhibit high energy density, high Coulombic efficiency, and long cycling life.

Systems and methods utilizing water soluble (aqueous) PAA-based polymer binders for silicon-dominant anodes may include an electrode coating layer on a current collector, where the electrode coating layer is formed from silicon and a pyrolyzed water soluble PAA-based polymer blend, wherein the water soluble PAA-based polymer blend comprises PAA and one or more additional water-soluble polymer components. The electrode coating layer may include more than 70% silicon and the anode may be in a lithium ion battery.

The present invention provides a lithium secondary battery that has high energy density and excellent cycle characteristics, and a method for using this battery. The present invention relates to a lithium secondary battery comprising: a positive electrode current collector; a positive electrode formed on at least one surface of the positive electrode current collector and having a positive electrode active material; a negative electrode free of a negative electrode active material; and a separator or solid electrolyte disposed between the positive electrode and the negative electrode, wherein the positive electrode contains a Li(Ni, Co, Mn)O.sub.2 crystal and/or a Li(Ni, Co, Al)O.sub.2 crystal whose full width at half maximum for the diffraction peak of the (003) plane as measured by X-ray diffraction that is greater than 0.00° and 0.10° or less in an amount of 20% by mass or more and 100% by mass or less relative to the total mass of the positive electrode active material.

A novel wound electrode assembly for a lithium oxyhalide electrochemical cell is described. The electrode assembly comprises an elongate cathode of an electrochemically non-active but electrically conductive carbonaceous material disposed between an inner elongate portion and an outer elongate portion of a unitary lithium anode. That way, lithium faces the entire length of the opposed major sides of the cathode. This inner anode portion/cathode/outer anode portion configuration is rolled into a wound-shaped electrode assembly that is housed inside a cylindrically-shaped casing. A cylindrically-shaped sheet-type spring centered in the electrode assembly presses outwardly to limit axial movement of the electrode assembly. In one embodiment, all the non-active components, except for the cathode current collector, which is nickel, are made of stainless-steel. This provides the cell with a low magnetic signature without adversely affecting the cell's high-rate capability.

An electrochemical device includes an anode having sodium or lithium; a cathode having a carbonaceous material; a separator; and an electrolyte that includes a metal halide, a fluorinated electrolyte compound, and thionyl chloride; wherein the electrochemical device is a primary battery or a secondary battery.

An anode for a lithium-based energy storage device such as a lithium-ion battery is disclosed. The anode includes an electrically conductive current collector comprising an electrically conductive layer and a transition metal oxide layer overlaying the electrically conductive layer. The anode may include a continuous porous lithium storage layer provided over the transition metal oxide layer. The continuous porous lithium storage layer may include at least 80 atomic % silicon. A method of making the anode may include providing an electrically conductive current collector having an electrically conductive layer and a transition metal oxide layer provided over the electrically conductive layer. A continuous porous lithium storage layer is deposited over the transition metal oxide layer by PECVD. The continuous porous lithium storage layer has a total content of silicon of at least 80 atomic %.

Provided is a ferritic stainless steel sheet for current collectors for sulfide-based solid-state batteries, which has excellent sulfidation resistance and adhesiveness. The ferritic stainless steel sheet has a component composition containing Cr in an amount of 16% by mass or more, wherein the surface of the ferritic stainless steel sheet has an uneven structure having recessed portions and projecting portions, the average height of the projecting portions is 20 to 50 nm inclusive, the average distance between the projecting portions is 20 to 200 nm inclusive, and the [Cr]/[Fe], i.e., the ratio of the atom concentration of Cr that is present in a form other than the metal form to the atom concentration of Fe that is present in a form other than the metal form, on the surface of the ferritic stainless steel sheet is 1.0 or more.

Systems and methods for rechargeable batteries are provided. In an embodiment, a battery may include a cathode, an anode, an electrolyte solution, and a current collector. The anode may include a 3D porous structure. The 3D porous structure may have a higher electrical conductivity at one end than at the other end, and lithium ions may be dispersed throughout the 3D porous structure.