A negative electrode-solid electrolyte sub-assembly for an all-solid secondary battery, the sub-assembly including: a negative electrode current collector; a first negative active material layer on the current collector; an interlayer on the first negative active material layer; and a solid electrolyte on the interlayer and opposite the first negative active material layer, wherein the interlayer includes a composite including a first metal material and a lithium ion conductor, wherein the first metal material includes a first metal, an alloy including the first metal and lithium, a compound including the first metal and lithium, or a combination thereof, wherein the first negative active material layer includes a carbonaceous negative active material, and optionally a first negative active material including a second metal, a metalloid, or a combination thereof.

A negative electrode for a lithium metal battery which includes: a current collector; a negative electrode active material layer formed on the surface of a current collector; a heat conductive layer formed on a surface of the negative electrode active material layer wherein the heat conductive layer comprises a heat conductive material having a heat conductivity of 25 W/m.Math.K to 500 W/m.Math.K; and a protective layer formed on a surface of the heat conductive layer, wherein the protective layer includes at least one of a porous polymer layer and a ceramic layer. An electrochemical device including the negative electrode for a lithium metal battery. The negative electrode for a lithium metal battery includes a heat conductive layer and a protective layer, and can inhibit growth of lithium dendrite in a negative electrode for a lithium metal battery and improve the cycle life of an electrochemical device.

An intermediary solid electrolyte structure having a Li ion conducting solid electrolyte layer covered with a thin as-deposited lithium phosphorus nitride film. A surface protected solid electrolyte having a solid electrolyte layer having a first major surface that is covered by a composite protective film, the composite protective film having a lithium phosphorus material component and a phosphorus nitride material component. A physical vapor deposition target for the deposition of a composite protective film, the target having a compacted composite material target having a mosaic structure. Methods of making thin films.

At least one embodiment relates to a method for transforming at least part of a valve metal layer into a template that includes a plurality of spaced channels aligned longitudinally along a first direction. The method includes a first anodization step that includes anodizing the valve metal layer in a thickness direction to form a porous layer that includes a plurality of channels. Each channel has channel walls and a channel bottom. The channel bottom is coated with a first insulating metal oxide barrier layer as a result of the first anodization step. The method also includes a protective treatment. Further, the method includes a second anodization step after the protective treatment. The second anodization step substantially removes the first insulating metal oxide barrier layer, induces anodization, and creates a second insulating metal oxide barrier layer. In addition, the method includes an etching step.

A battery plate having a substrate with opposing surfaces and one or more nonplanar structures and one or more active materials disposed on at least one of the opposing surfaces; wherein the battery plate includes one or more of: i) one or more projections disposed within but do not extend beyond the active material; ii) one or more projections which project beyond the active material and substantially free of the active material or dust formed from the active material; and/or iii) a frame about the periphery of the substrate which projects beyond the active material and is substantially free of the active material or dust formed from the active material; and wherein the battery plate is adapted to form part of one or more electrochemical cells in a battery assembly.

A battery cell includes at least one positive electrode, at least one negative electrode, and at least one separator. The positive electrode includes a positive electrode porous solid-state electrolyte polymer foam that includes at least one lithium salt, and a positive electrode material located in the pores of the positive electrode foam. The negative electrode includes a negative electrode porous solid-state electrolyte polymer foam that includes at least one lithium salt, and a negative electrode material located in the pores of the negative electrode foam.

An ionic conductor is provided, wherein a composition formula thereof is Li.sub.9+xAl.sub.3(P.sub.2O.sub.7).sub.3(PO.sub.4).sub.2−x(GeO.sub.4).sub.x, wherein x is a range of 0<x≦2.0.

A novel and environmentally preferable method is provided for preparing solid electrolyte particles capable of making dense, flexible, Li.sup.+ conducting electrolyte thin films. Methods are also provided for using the solid electrolyte particles and/or thin films in manufacturing safer and more efficient lithium-based batteries. In particular, the method uses inorganic precursors instead of using organic precursors in preparing an aerosol and then convert the aerosol to solid powders to provide the solid electrolyte particles. The solid electrolyte particles prepared have a cubic polymorph and have a desired particle size range, and are capable of making a solid electrolyte film with a thickness less than 50 μm.

A manufacturing method of an electrode assembly includes: forming an active material compact containing a lithium double oxide and having a plurality of voids; forming a first solid electrolyte in the plurality of voids; impregnating a precursor solution of a second amorphous solid electrolyte conducting lithium ions with an active material compact in which the first solid electrolyte is formed; and performing heat treatment of the active material compact with which the precursor solution is impregnated and forming a second solid electrolyte in the plurality of voids.

Solid-state laminate electrode assemblies and various methods for making the solid-state laminate electrode assemblies involve a lithium metal layer reactively bonded to a lithium ion conducting sulfide glass layer. During manufacture, highly reactive surfaces of the lithium metal layer and the lithium ion conducting sulfide glass layer are maintained in its substantially unpassivated state until they have been reactively bonded.