The instant disclosure sets forth multiphase lithium-stuffed garnet electrolytes having secondary phase inclusions, wherein these secondary phase inclusions are material(s) which is/are not a cubic phase lithium-stuffed garnet but which is/are entrapped or enclosed within a lithium-stuffed garnet. When the secondary phase inclusions described herein are included in a lithium-stuffed garnet at 30-0.1 volume %, the inclusions stabilize the multiphase matrix and allow for improved sintering of the lithium-stuffed garnet. The electrolytes described herein, which include lithium-stuffed garnet with secondary phase inclusions, have an improved sinterability and density compared to phase pure cubic lithium-stuffed garnet having the formula Li.sub.7La.sub.3Zr.sub.2O.sub.12.

A method of manufacturing a solid-state electrolyte including: providing a solvent; dissolving a precursor compound including lithium, a precursor compound including lanthanum, and a precursor compound including zirconium in the solvent to provide a precursor composition, wherein a content of lithium in the precursor composition is greater than a stoichiometric amount; spraying the precursor composition onto a heated substrate to form a film; and heat-treating the film at 300° C. to 800° C. to manufacture the solid state electrolyte, wherein the solid-state electrolyte includes Li.sub.(7-x)Al.sub.x/3La.sub.3Zr.sub.2O.sub.12 wherein 0≤x≤1, and wherein the solid state electrolyte is in a form a film having a thickness of 5 nanometers to 1000 micrometers.

The present disclosure relates to an electrolyte operable in wide temperature ranges and a lithium battery including the same. By dissolving two or more lithium salts in a mixture solvent including three or more different acyclic alkyl carbonate compounds, reactivity with lithium metal and freezing point are decreased at the same time and, therefore, the lifetime characteristics and electrochemical performance of a lithium-ion battery, a lithium-metal battery, or a lithium-ion capacitor using the same are improved significantly.

An electrochemical battery can include electrodes (a cathode and an electrode) arranged on respective surfaces of an electrolyte. The electrodes and electrolyte can each be solid state films that can be layered on top of one another to create a stacked structure disposed on a substrate. A polymeric sealant material can be applied over and around the battery stack and a moisture barrier can be formed over the sealant material to thereby prevent moisture from reaching the battery. Conductive terminals electrically coupled to the cathode and anode, respectively, can be formed on a second side of the substrate. As such, the battery can be flip-chip mounted to corresponding mounting pads and thereby connected to other electronics that can receive power from the battery.

The present technology is related to imide containing quaternary ammonium salts having a hydrocarbyl substituent of number average molecular weight less 300, and additive packages having such quaternary ammonium salts and improved stability.

Disclosed herein are a lithium air battery having a multi-layered electrolyte membrane and a method of manufacturing the same. The lithium air battery includes a first electrolyte membrane capable of obtaining high ionic conductivity on a lithium negative electrode surface while minimizing the content of polymer and positioning a second electrolyte membrane with high resistance to oxygen radicals on the air electrode. Accordingly, the multi-layered electrolyte membrane can improve an electrolyte filling characteristic and a conductive characteristic of lithium ions, suppress oxygen radicals from being carried from an air electrode, and suppress a growth of lithium dendrite to largely improve a battery lifespan.

The invention relates to a sodium-ion secondary cell comprising a cathode and an anode, wherein the cathode comprises one or more cathode electrode active materials which include at least one layered nickel-containing sodium oxide material, and the anode comprises a layer of anode electrode active material disposed on an anode substrate; where in the layer of anode electrode active material comprises at least one disordered carbon material, and the mass of the layer of anode electrode active material per square metre of the anode substrate is less than 80 gm.sup.−2-; further wherein the ratio of the mass of the cathode electrode active material to the mass of the layer of anode electrode active material is from 0.1 to 10, and wherein the thickness of the layer of anode electrode active material on the anode substrate is less than 100 μm.

Rechargeable electrochemical battery cells are disclosed. In particular, are disclosed discharge state assembled rechargeable electrochemical cells, which, when in discharged state, comprises an electrically conductive anodic current collector and a cathode that comprises metallic material as an active material.

A novel electrochemical hydrogen compressor material technology system comprising a composite polymer membrane made from a blend of inorganic and organic polymers, the preparation and the use thereof.

A sulfide solid electrolyte material with favorable ion conductivity and high reduction resistance. The object is attained by providing sulfide solid electrolyte material comprising: Li element; Ge element; P element; and S element, wherein the sulfide solid electrolyte material peaks at a position of 2θ=29.58°±0.50° in X-ray diffraction measurement using CuKα ray, the sulfide solid electrolyte material does not peak at a position of 2θ=27.33°±0.50° in X-ray diffraction measurement using CuKα ray or when diffraction intensity at the peak of 2θ=29.58°±0.50° is regarded as I.sub.A and diffraction intensity at the peak of 2θ=27.33°±0.50° is regarded as I.sub.B, a value of I.sub.B/I.sub.A is less than 1.0, and part of the P element in a crystal phase peaking at the position of 2θ=29.58°±0.50° is substituted with a B element.