An enhanced solid state battery cell is disclosed. The battery cell can include a first electrode, a second electrode, and a solid state electrolyte layer interposed between the first electrode and the second electrode. The battery cell can further include a resistive layer interposed between the first electrode and the second electrode. The resistive layer can be electrically conductive in order to regulate an internal current flow within the battery cell. The internal current flow can result from an internal short circuit formed between the first electrode and the second electrode. The internal short circuit can be formed from the solid state electrolyte layer being penetrated by metal dendrites formed at the first electrode and/or the second electrode.

Provided is a high-capacity SMD-type all-solid-state battery comprising: a stacked press body; a first external electrode formed on one side of the stacked press body; and a second external electrode formed on the other side of the stacked press body, wherein the stacked press body includes: a plurality of positive electrode sheets sequentially stacked and pressed so that an end of one side of each is connected to the first external electrode; a plurality of negative electrode sheets positioned between the positive electrode sheets crosswise with respect to the positive electrode sheets, and sequentially stacked and pressed so that an end of the other side of each is connected to the second external electrode; and a plurality of electrolyte sheets positioned between the positive electrode sheets and the negative electrode sheets and sequentially stacked and pressed.

A catalyst-coated membrane (CCM) for use in a water electrolyser, having a laminate structure comprising: a first layer comprising a first membrane component having a cathode catalyst layer disposed on a first face thereof; a second layer comprising a second membrane component having an anode catalyst layer disposed on a first face thereof; and an intermediate layer disposed between the first and second layers, comprising a third membrane component having a recombination catalyst layer disposed on a first face thereof is disclosed. The CCM is useful within a water electrolyser. The recombination catalyst layer reduces the risk associated with hydrogen crossover and allows thinner membranes with lower resistance to be used.

A polymer compound including a repeating unit represented by Formula: ##STR00001##
wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, a1, a2, and a11 in Formula 1 are as defined in the specification.

An all-solid secondary battery and an all-solid secondary battery structure including the same are provided. The all-solid secondary battery includes a cathode layer; an anode layer, and a solid electrolyte layer arranged between the cathode layer and the anode layer. The cathode layer includes a positive electrode current collector, and a positive active material layer on a side or opposite sides of the positive electrode current collector. The anode layer includes a negative electrode current collector, and a first negative active material layer on the negative electrode current collector, and a flame retardant inactive member is on a side of the cathode layer.

A lithium-metal battery includes: a cathode; a garnet solid-state electrolyte disposed on the cathode; and a lithium anode disposed on the garnet solid-state electrolyte, such that a modification layer is disposed at an interface of the lithium anode and garnet solid-state electrolyte, the modification layer comprising an inorganic lithium salt. A method of forming a lithium-metal battery includes treating garnet solid-state electrolyte with an acid solution; and exposing the acid-treated garnet solid-state electrolyte to hydrogen fluoride to form a modification layer atop the garnet solid-state electrolyte.

Disclosed herein are proton transport membranes and methods of making and use thereof. The proton transport membranes comprise: a two-dimensional (2D) material having a top surface and a bottom surface; wherein the two-dimensional material comprises graphene and hexagonal-boron nitride in an atomic ratio of from 100:0 to 0:100. In some examples: the top surface is functionalized with a first functional moiety and the bottom surface is not functionalized; the top surface is functionalized with a first functional moiety and the bottom surface is functionalized with the first functional moiety; or the top surface is functionalized with a first functional moiety and the bottom surface is functionalized with a second functional moiety, the second functional moiety being different than the first functional moiety. In some examples, the two-dimensional material is doped with a substitutional dopant in an amount of from greater than 0 atomic % (at %) to less than 100 at %.

A solid electrolyte including: a lithium ion inorganic conductive layer; and an amorphous phase on a surface of the lithium ion inorganic conductive layer, wherein the amorphous phase is an irradiation product of the lithium ion inorganic conductive layer. Also, the method of preparing the same, and a lithium battery including the solid electrolyte.

An all-solid-state battery has a structure in which a positive electrode current collector, a positive electrode layer containing a positive electrode active material and a solid electrolyte, a solid electrolyte layer containing a solid electrolyte, a negative electrode layer containing a negative electrode active material and a solid electrolyte, and a negative electrode current collector are stacked in this order. The solid electrolyte layer has a repeating structure in which a low porosity portion and a high porosity portion having a higher porosity than a porosity of the low porosity portion are repeated in an in-plane direction.

A method is provided for manufacturing a nanoparticle material having an ionic conductivity as a battery material for Fluoride ion Batteries, thus, being capable for overcoming high resistances at the surfaces, grain-boundaries of nanoparticles or compartments of the nanoparticles by a material treatment selected from: (i) a ball-mill procedure under aerosol and/or vapour-pressure atmosphere, (ii) excess-synthesis, (iii) ball-milling with surface stabilizing and conductivity enhancing solid or/and gel/liquid additives or (iv) functionalizing the material to obtain functionalized nanoparticles (GSNP) comprising a dispersion of graphene, nanotubes and/or a further additive selected from carbon-black, graphite, Si and/or CF.sub.X, Herein, fluorides (Em.sub.mF.sub.h), fluorides composites (Em1.sub.m1Em2.sub.m2 . . . F.sub.h1) are synthesized, wherein a first metal, metalloid or non-metal Em or Em1 and a second metal, metalloid or non-metal Em2 are dissimilarly selected from various elements in a manner that a battery material having an increased ionic conductivity is obtained.