The present invention relates to an energy storage device comprising a silicate comprises a formula:
M.sub.vM1.sub.wM2.sub.xSi.sub.yO.sub.z
where M is selected from the group consisting of Li, Na, K, Al, and Mg M1 is selected from the group consisting of alkaline metals, alkaline earth metals, Ti, Mn, Fe, La, Zr, Ce, Ta, Nb, V and combinations thereof; M2 is selected from the group consisting of B, Al, Ga, Ge or combinations thereof; v, y and z are greater than 0; w and/or x is greater than 0; y≥x; and wherein M.sub.vM1.sub.wM2.sub.xSi.sub.yO.sub.z accounts for at least 90 wt % of the composition.

The present invention relates to an energy storage device comprising a silicate comprises a formula:
M.sub.vM1.sub.wM2.sub.xSi.sub.yO.sub.z
where M is selected from the group consisting of Li, Na, K, Al, and Mg M1 is selected from the group consisting of alkaline metals, alkaline earth metals, Ti, Mn, Fe, La, Zr, Ce, Ta, Nb, V and combinations thereof; M2 is selected from the group consisting of B, Al, Ga, Ge or combinations thereof; v, y and z are greater than 0; w and/or x is greater than 0; y≥x; and wherein M.sub.vM1.sub.wM2.sub.xSi.sub.yO.sub.z accounts for at least 90 wt % of the composition.

The present invention provides: i) a lithium-sulfur battery in which solid sulfur is introduced into an electrolytic region between a positive electrode and a negative electrode; ii) a lithium-sulfur battery comprising a middle layer containing elemental sulfur (S.sub.8) or lithium sulfide (Li.sub.2S) in an electrolytic region between a positive electrode and a negative electrode; and iii) a lithium-sulfur battery having a separator supporting sulfur particles or lithium sulfide particles between a positive electrode and a negative electrode.

Provided is a porous separator for a secondary battery including an inorganic oxide layer formed on a porous substrate by an atomic layer deposition process, such that a thin separator having excellent heat stability, permeability and electrolyte impregnability may be provided by controlling specific conditions in the process and thicknesses of the inorganic oxide layers on a surface and inside of the porous separator.

Certain exemplary embodiments can provide a system, which can comprise an ultra-thin polymer ceramic composite separator. The ultra-thin polymer ceramic composite separator can comprise Li-ion conducting ceramic material. The ceramic composite separator has a columnar grained microstructure. The ultra-thin polymer ceramic composite separator can comprise a single or bi-layer combination of LiPON, LATP, garnets, lithium sulfides, or Li.sub.1+2xZr.sub.2−zCa(PO.sub.4).sub.3.

A metal-ion battery is provided. The metal-ion battery includes a positive electrode, a negative electrode, a separating structure, and an electrolyte, wherein the positive electrode and the negative electrode are separated by the separating structure, and the electrolyte composition is disposed between the positive electrode and the negative electrode. The separating structure includes a first separator, a second separator, and a dielectric layer, wherein the dielectric layer is disposed between the first separator and the second separator. The dielectric layer consists of a dielectric material, and the dielectric material has a dielectric constant from 10 to 200.

Battery separators are generally provided. In some embodiments, the battery separators may comprise a non-woven web including a plurality of inorganic particles (e.g., silica). The non-woven web may include, in some embodiments, a plurality of relatively coarse glass fibers (e.g., having an average diameter of greater than about 1.5 microns), e.g., such that the non-woven web has a particular largest pore size and median pore size. The combination of inorganic particles with a non-woven web having features described herein may exhibit enhanced electrolyte stratification distance and/or reduced electrolyte filling time. In some embodiments, such improvements may be achieved while having relatively minimal or no adverse effects on another property of the battery separator and/or the overall battery.

A vehicle traction battery includes a battery cell, the battery cell including a cathode, and anode, and a separator the anode and cathode. The separator includes at least one protective layer that is impermeable to polysulfides and at least one ion-conducting conductive layer whose composition is different than that of the protective layer and that is designed as a copolymer which includes a stabilizing phase and an ionically conductive phase, the protective layer including an inorganic substance.

Provided are a structure for non-aqueous electrolyte secondary batteries in which at least one of a cathode with a separator and an anode with a separator are strongly adhered, an aqueous latex used to obtain the structure for non-aqueous electrolyte secondary batteries, and a separator/intermediate layer laminate.

The aqueous latex according to the present invention contains polymer particles dispersed in water, the polymer particles containing a copolymer comprising a structural unit derived from an unsaturated dibasic acid, and/or a structural unit derived from an unsaturated dibasic acid monoester, and a structural unit derived from a vinylidene fluoride-based monomer, the aqueous latex being used in production of an intermediate layer to be provided in a structure for non-aqueous electrolyte secondary batteries having a cathode, an anode, and a separator laminated between the cathode and the anode, the intermediate layer being provided in at least one of between the cathode and the separator and between the anode and the separator.

The present disclosure is generally related to separators for use in lithium metal batteries, and associated systems and products. Certain embodiments are related to separators that form or are repaired when an electrode is held at a voltage. In some embodiments, an electrochemical cell may comprise an electrolyte that comprises a precursor for the separator.