Abstract: A method of producing metallic sodium powders. The method includes immersing one or more solid pieces of sodium metal in an organic liquid containing a hydrocarbon oil. The solid piece(s) of sodium metal immersed in the hydrocarbon oil is (are) then subjected to ultrasonic irradiation, wherein the solid piece of sodium metal is fragmented to form sodium powder, resulting in a dispersion of the sodium powder in the organic liquid. The dispersed sodium powder is then separated from the organic liquid, resulting in metallic sodium powder. A method of presodiation of an anode in an electrochemical cell. The method includes adding sodium metal powders to the surface of the anode either as a dry powder or as a suspension of the sodium particles in an organic liquid. An anode in an electrochemical cell containing metallic sodium particles. An electrochemical cell comprising a presodiated anode.

Abstract: A solid electrolyte comprising a compound of the formula Ay(MS4)z(PS4)4-zX3 having an ionic conductivity of from 10?7 to 10?4 S/cm at room temperature, and methods of making a solid electrolyte.

Abstract: Disclosed is a part including a metal substrate, a non-hydrogenated amorphous ta-C or aC carbon coating that coats the substrate, and an undercoat which is based on chromium (Cr), carbon (C) and silicon (Si) and is disposed between the metal substrate and the amorphous carbon coating and to which the amorphous carbon coating is applied, characterized in that the undercoat included, at its interface with the amorphous carbon coating, a ratio of silicon in atomic percent to chromium in atomic percent (Si/Cr) of 0.35 to 0.60, and a ratio of carbon in atomic percent to silicon in atomic percent (C/Si) of 2.5 to 3.5.

Abstract: Self-cleaning electrochemical cells, systems including self-cleaning electrochemical cells, and methods of operating self-cleaning electrochemical cells are disclosed. The self-cleaning electrochemical cell can include a plurality of concentric electrodes disposed in a housing, a fluid channel defined between the concentric electrodes, and an electrical connector positioned at a distal end of a concentric electrode and electrically connected to the electrode. The electrical connectors may be configured to provide a substantially even current distribution to the concentric electrode and minimize a zone of reduced velocity occurring downstream from the electrical connector. The electrical connector may be configured to cause a temperature of an electrolyte solution to increase by less than about 0.5° C. while transmitting at least 100 W of power.

Abstract: A solid electrolyte material comprises Li, T, X and A wherein T is at least one of P, As, Si, Ge, Al, Sb, W, and B; X is one or more halogens and/or N; A is one or more of S or Se. The solid electrolyte material has peaks at 14.9°±0.50°, 20.4°±0.50°, and 25.4°±0.50° in X-ray diffraction measurement with Cu—K?(1,2)=1.5418? and may include glass ceramic and/or mixed crystalline phases.

Abstract: A method of producing metallic sodium powders. The method includes immersing one or more solid pieces of sodium metal in an organic liquid containing a hydrocarbon oil. The solid piece (s) of sodium metal immersed in the hydrocarbon oil is (are) then subjected to ultrasonic irradiation, wherein the solid piece of sodium metal is fragmented to form sodium powder, resulting in a dispersion of the sodium powder in the organic liquid. The dispersed sodium powder is then separated from the organic liquid, resulting in metallic sodium powder. A method of presodiation of an anode in an electrochemical cell. The method includes adding sodium metal powders to the surface of the anode either as a dry powder or as a suspension of the sodium particles in an organic liquid. An anode in an electrochemical cell containing metallic sodium particles. An electrochemical cell comprising a presodiated anode.

Abstract: Nanosized cubic lithium lanthanum zirconate is synthesized by forming a solution including an organic compound and compounds of lithium, lanthanum, and zirconium; drying the solution to yield a solid; and heating the solid in the presence of oxygen to pyrolyze the organic compound to yield a product comprising nanosized cubic lithium lanthanum zirconate.

Abstract: Embodiments of the present application relate to a solid electrolyte and a preparation method thereof, and an electrochemical device and an electronic device comprising the solid electrolyte. The solid electrolyte comprises a lithium-containing transition metal sulfide being represented by the chemical formula of Li2?2a+bCd1+aMcGe1?dS4, where M is selected from the group consisting of Al, Ga, In, Si, Sn and a combination thereof, wherein 0<a?0.25, 0?b?0.2, 0?c?0.2, and 0?d?0.2. The embodiments of the present application effectively improve the shortcomings of poor chemical stability of the conventional thiophosphate solid electrolyte in an atmospheric environment by providing the above solid electrolyte having a thio-LISICON structure and containing no phosphorus (P), so that the solid electrolyte has both good chemical stability and high ionic conductivity, thereby reducing the processing environment requirements and manufacturing cost of the solid electrolyte.

Abstract: A method for producing an LGPS-type solid electrolyte can be provided, the method includes preparing a homogeneous solution by mixing and reacting Li2S and P2S5 in an organic solution such that the molar ratio of Li2S/P2S5 is 1.0-1.85; forming a precipitate by adding, to the homogeneous solution, at least one MS2 (M is selected from the group consisting of Ge, Si, and Sn) and Li2S and then mixing; obtaining a precursor by removing the organic solution from the precipitate; and obtaining the LGPS-type solid electrolyte by heating the precursor at 200-700° C.

Abstract: An anode material including a metal oxide-conductive inorganic material complex including a metal oxide and a conductive inorganic material bound to the metal oxide, wherein the complex is doped with one or more doping elements selected from the group consisting of transition metals and amphoteric metal elements, and a preparation method thereof, are provided.

Abstract: The present application discloses a battery to alleviate the impact on the main body of the battery and for improving the safety performance of the battery. The battery comprises a package case and a circuit board, wherein the package case forms a first surface and a buffer member is arranged between the circuit board and the first surface. In the present application, the buffer member between the circuit board and the first surface may alleviate the force received on the first surface, thereby alleviating the impact on the electrode assembly of the battery, avoiding the damage of the positive and negative electrode plates and the short circuit caused by the contact between the positive and negative electrodes, and improving the safety of battery.

Abstract: The present invention relates to a compound represented by the general formula Li2+2xM1?xZS4, wherein 0.3?x?0.9; wherein M is one or more elements selected from the group consisting of Pb, Mg, Ca, Ge and Sn; and wherein Z is one or more elements selected from the group consisting of Ge, Si, Sn and Al. The present invention also relates to a method for preparing the material of the present invention, comprising the steps of: (a) providing a mixture of lithium sulfide Li2S, sulfides MS and ZS2, in a stoichiometric ratio ensuring Li2+2xM1?xZS4 to be obtained, wherein M, Z and x are as defined above; (b) pelletizing the mixture prepared in step (a); (c) heating at a maximum plateau temperature. In still another aspect, the present invention relates to a use of the compound of the present invention as a solid electrolyte, in particular in an all solid-state lithium battery.

Abstract: A NaSICON-type solid-state electrolyte that contains Na as a conducting species, Zr, M, Si, P, and O, where M is at least one element selected from Mg, V, and Nb. The NaSICON-type solid-state electrolyte has a composition in which a molar ratio of M to Zr (M/Zr) is less than 0.2.

Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer containing active material particles, ferroelectric particles, and solid electrolyte particles. A ratio (FEcontact) of the number of the ferroelectric particles in contact with the active material particles relative to the number of the ferroelectric particles included in the active material-containing layer is 85% or more. A ratio (SEnon-contact) of the number of the solid electrolyte particles not in contact with the active material particles relative to the number of the solid electrolyte particles included in the active material-containing layer is 30% or more.

Abstract: A lithium or sodium battery includes a cathode containing manganese; an anode containing an active anode material; a separator; an electrolyte; and a transition metal ion sequestration agent; wherein the transition metal ion sequestration agent contains a micron or nano-sized inorganic compound and the transition metal ion sequestration agent is located on and/or within the separator; on and/or within the anode; in the electrolyte; or any combination thereof.

Abstract: A sodium-ion conducting (e.g., sodium-sulfur) battery, which can be rechargeable, comprising a microporous host-sulfur composite cathode as described herein or a liquid electrolyte comprising a liquid electrolyte solvent and a liquid electrolyte salt or electrolyte additive as described herein or a combination thereof. The batteries can be used in devices such as, for example, battery packs.

Abstract: A method for preparing electrolyte material having a NASICON structure, based on a Na3+xScxZr2?x(SiO4)2(PO4) compound where 0?x<2. The method includes providing an acidic, aqueous solution which, according to a desired stoichiometry, comprises sodium, scandium and zirconium in the form of water-soluble nitrates, acetates or carbonates, and soluble silicates or orthosilicic acids or organic silicon compounds in dissolved form; subsequently adding phosphoric acid or ammonium dihydrogenphosphate or other soluble phosphates, according to the desired stoichiometry, complex zirconium dioxide phosphates forming as colloidal precipitations; and subsequently drying and calcining the mixture.

Abstract: Perovskite structures are provided for use in fuel cells. Specifically, perovskite structures are provided for use as electrodes in solid oxide fuel cells (SOFCs) and methods of making the same. The perovskite structure may include a first element X, strontium, iron, cobalt, oxygen and tungsten; wherein the first element X is barium, a lanthanide, or a mixture thereof, and wherein the structure comprises a region of single perovskite and a region of double perovskite.

Abstract: A porous polyimide resin film having a high aperture ratio, and a method for producing a porous polyimide film. The method includes removing fine particles from a polyimide resin-fine particle composite film to obtain a porous polyimide resin film by either removing at least a part of a polyimide resin portion of the polyimide resin-fine particle composite film prior to removing the fine particles, or by removing at least a part of the porous polyimide resin film subsequent to removing the fine particles.

Abstract: The present invention relates to an electrolyte for a lithium battery and a lithium battery comprising the same. The electrolyte includes a non-aqueous organic solvent, a lithium salt, and a first additive capable of forming a chelating complex with a transition metal and which is stable at voltages ranging from about 2.5 to about 4.8 V.

Abstract: Amorphous lithium lanthanum zirconium oxide (LLZO) is formed as an ionically-conductive electrolyte medium. The LLZO comprises by percentage of total number of atoms from about 0.1% to about 50% lithium, from about 0.1% to about 25% lanthanum, from about 0.1% to about 25% zirconium, from about 30% to about 70% oxygen and from 0.0% to about 25% carbon. At least one layer of amorphous LLZO may be formed through a sol-gel process wherein quantities of lanthanum methoxyethoxide, lithium butoxide and zirconium butoxide are dissolved in an alcohol-based solvent to form a mixture which is dispensed into a substantially planar configuration, transitioned through a gel phase, dried and cured to a substantially dry phase.

Abstract: Provided are a multi-layered structure electrolyte including a gel polymer electrolyte on opposite surfaces of a ceramic solid electrolyte, for a lithium ion secondary battery including positive and negative electrodes capable of intercalating/deintercalating lithium ions, and a lithium ion secondary battery including the electrode. The electrolyte includes a gel polymer electrolyte on opposite surfaces of a ceramic solid electrolyte.

Abstract: A method of producing a positive electrode active material, comprising the steps of: preparing a solution by dissolving, in a solvent, respective predetermined amounts of a lithium source, a M source, a phosphorus source and a X source necessary for forming a positive electrode active material represented by the following general formula (1) having an olivine structure; gelating the obtained solution by addition of a cyclic ether; and calcinating the generated gel to obtain a carbon-coated lithium-containing composite oxide, wherein the positive electrode active material is represented by the general formula (1): LixMyP1-zXzO4??(1) wherein M is at least one element selected from the group consisting of Fe, Ni, Mn, Zr, Sn, Al and Y, X is at least one selected from the group consisting of Si and Al, and 0<x?2, 0.8?y?1.2, 0?z?1.

Abstract: A method for producing a lithium alkali transition metal oxide for use as a positive electrode material for lithium secondary batteries by a precipitation method. The positive electrode material is a lithium alkali transition metal composite oxide and is prepared by mixing a solid state mixed with alkali and transition metal carbonate and a lithium source. The mixture is thermally treated to obtain a small amount of alkali metal residual in the lithium transition metal composite oxide cathode material.

Abstract: A solid electrolyte material that can react with an electrode active material to forms a high-resistance portion includes fluorine.

Abstract: The present invention provides a method for producing a lithium-containing composite oxide represented by general formula (1) below, the method at least including a step of preparing a solution by dissolving a lithium source, an element M source, a phosphorus source, and an element X source that serve as source materials in a solvent, the phosphorus source being added after at least the element M source is dissolved; a step of gelating the resulting solution; and a step of calcining the resulting gel: LixMyP1-zXzO4??(1) (where M represents at least one element selected from the group consisting of Fe, Ni, Mn, Zr, Sn, Al, and Y; X represents at least one element selected from the group consisting of Si and Al; and 0<x?2, 0.8?y?1.2, 0?z?1). According to the present invention, a positive electrode active material for lithium secondary batteries that offers high safety and high cost efficiency and are capable of extending battery life can be provided.

Abstract: Amorphous lithium lanthanum zirconium oxide (LLZO) is formed as an ionically-conductive electrolyte medium. The LLZO comprises by percentage of total number of atoms from about 0.1% to about 50% lithium, from about 0.1% to about 25% lanthanum, from about 0.1% to about 25% zirconium, from about 30% to about 70% oxygen and from 0.0% to about 25% carbon. At least one layer of amorphous LLZO may be formed through a sol-gel process wherein quantities of lanthanum methoxyethoxide, lithium butoxide and zirconium butoxide are dissolved in an alcohol-based solvent to form a mixture which is dispensed into a substantially planar configuration, transitioned through a gel phase, dried and cured to a substantially dry phase.

Abstract: The invention relates to conducting salts which contain lithium bis(oxalato)borate (LiBOB) and mixed lithium borate salts of the type of formula (I), wherein the portion of compound (I) in the conducting salt is 0.01 to 20 mole-% and X in formula (I) is a bridge linked with the boron via two oxygen atoms, selected from formula (II), wherein Y1 and Y2 together=O, m=1, n=0 and Y3 and Y4 independently represent H or an alkyl group with 1 to 5 C atoms, or Y1, Y2, Y3, Y4 independently represent OR (with R=alkyl group with to 5 C atoms), or H or an alkyl group with 1 to 5 C atoms, and wherein m=0 or 1, n=0 or 1, or Y2 and Y3 are members of a 5- or 6-membered aromatic or heteroaromatic ring (with N, O or S as the hetero element) which can be optionally substituted with alkyl, alkoxy, carboxy or nitrile, and if so, Y1 and Y4 are not applicable and n>0, m=0 or 1. The invention also relates to a method for producing the inventive conducting salts.

Abstract: An ion conducting glass-ceramics represented by the general formula (I): Na2S—MxSy—NaSb, wherein M and N are different and selected from P, Si, Ge, B, Al and Ga; x, y, a and b are integers indicating the stoichiometric ratio depending on the species of M and N; and the content of Na2S is more than 60 mol % and less than 80 mol %.

Abstract: A LiBH4—C60 nanocomposite that displays fast lithium ionic conduction in the solid state is provided. The material is a homogenous nanocomposite that contains both LiBH4 and a hydrogenated fullerene species. In the presence of C60, the lithium ion mobility of LiBH4 is significantly enhanced in the as prepared state when compared to pure LiBH4. After the material is annealed the lithium ion mobility is further enhanced. Constant current cycling demonstrated that the material is stable in the presence of metallic lithium electrodes. The material can serve as a solid state electrolyte in a solid-state lithium ion battery.

Abstract: A ceramic material that can exhibit sufficient compactness and lithium (Li) conductivity to enable the use thereof as a solid electrolyte material for a lithium secondary battery and the like is provided. The ceramic material contains aluminum (Al) and has a garnet-type crystal structure or a garnet-like crystal structure containing lithium (Li), lanthanum (La), zirconium (Zr) and oxygen (O).

Abstract: An alkali metal-cathode solution storage battery includes an alkali metal anode including at least one alkali metal, a cathode including copper metal, and an alkali ion conducting electrolyte/separator separating the anode and cathode. An anode side electrolyte is between the anode and the separator, and a cathode side electrolyte is between the cathode and the separator. The cathode side electrolyte is selected to have capacity to dissolve metal ions from the alkali metal and electron conducting materials. An ion exchange reaction occurs during operation of the battery within the cathode side electrolyte. The battery can be operated at low temperature (i.e., <100° C.), and provide high specific energy density. The battery can be a planar battery arrangement.

Abstract: A solid electrolyte including an alkali metal element, phosphorous, sulfur and halogen as constituent components.

Abstract: In the all-solid secondary battery of the present invention, a positive electrode layer and a negative electrode layer are disposed on both sides of a solid electrolyte layer, a first inorganic solid electrolyte and a second inorganic solid electrolyte are included into at least one of the positive electrode layer, the negative electrode layer, and the solid electrolyte layer, the content of transition metal in the first inorganic solid electrolyte is less than 15% by mass on oxide basis, and the content of transition metal in the second inorganic solid electrolyte is 15% by mass or more on oxide basis.

Abstract: The present invention provides a ceramic material capable of demonstrating compactness and Li ion conductivity to an extent that enables the use of the ceramic material as a solid-state electrolyte material for a lithium secondary battery, or the like. A ceramic material containing Li, La, Zr, Nb and/or Ta, as well as O and having a garnet-type or garnet-like crystal structure is used.

Abstract: A secondary battery includes: an electrolytic solution; a positive electrode; and a negative electrode, at least one of the positive electrode, the negative electrode, and the electrolytic solution containing an alkyl carbonate represented by the following formula (1) R—O—C(?O)—O—X??(1) wherein R is a linear alkyl group or halogenated alkyl group having a carbon number of from 8 to 20, or a branched alkyl group or halogenated alkyl group having a carbon number of from 8 to 20 in a main chain thereof; and X is an alkali metal element.

Abstract: A new battery configuration and process are detailed. The battery cell includes a solid electrolyte configured with an engineered metallization layer that distributes sodium across the surface of the electrolyte extending the active area of the cathode in contact with the anode during operation. The metallization layer enhances performance, efficiency, and capacity of sodium batteries at intermediate temperatures at or below about 200° C.

Abstract: A solid ion conductor including a garnet oxide represented by Formula 1: L5+x+2y(Dy,E3-y)(Mez,M2-z)Od??Formula 1 wherein L is at least one of a monovalent cation or a divalent cation, D is a monovalent cation, E is a trivalent cation, Me and M are each independently a trivalent, tetravalent, pentavalent, or a hexavalent cation, 0<x+2y?3, 0?y?0.5, 0?z<2, and 0<d?12, wherein O is partially or totally substituted with at least one of a pentavalent anion, a hexavalent anion, or a heptavalent anion; and B2O3.

Abstract: In one aspect, a rechargeable lithium battery including an electrolyte for the rechargeable lithium battery is provided. The electrolyte for the rechargeable lithium battery includes: a non-aqueous organic solvent; a lithium salt; and a compound represented by Chemical Formula 1.

Abstract: The present invention provides an electrochemical cell that includes an anolyte compartment housing an anode electrode; a catholyte compartment housing a cathode electrode; and a solid alkali ion conductive electrolyte membrane separating the anolyte compartment from the cathode compartment. In some cases, the electrolyte membrane is selected from a sodium ion conductive electrolyte membrane and a lithium ion conductive membrane. In some cases, the at least one of anode or the cathode includes an alkali metal intercalation material.

Abstract: A protected active metal electrode and a device with the electrode are provided. The protected active metal electrode includes an active metal substrate and a protection layer on a surface of the active metal substrate. The protection layer at least includes a metal thin film covering the surface of the active metal substrate and an electrically-conductive thin film covering a surface of the metal thin film. A material of the metal thin film is Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, or W. A material of the electrically-conductive thin film is selected from nitride of a metal in the metal thin film, carbide of a metal in the metal thin film, a diamond-like carbon (DLC), and a combination thereof.

Abstract: A cathode composition is described that includes a first element selected from nickel or cobalt; a second element M selected from iron or cobalt, wherein said second element M is contained within a sulfide composition MxSy, wherein the ratio of x and y is between 0.5:1 and 1.5:1; at least one first alkali metal halide; and an electrolyte salt comprising a second alkali metal halide and a metal halide, wherein the electrolyte salt has a melting point in a range from about 150° C. to about 300° C. The molar ratio of the first element to the sulfur of the sulfide composition is between 1.5:1 and 50:1. An energy storage device comprising the cathode composition is also disclosed.

Abstract: The present invention provides an electrochemical cell having an negative electrode compartment and a positive electrode compartment. A solid alkali ion conductive electrolyte membrane is positioned between the negative electrode compartment and the positive electrode compartment. A catholyte solution in the positive electrode compartment includes a halide ion or pseudohalide ion concentration greater than 3M, which provides degradation protection to the alkali ion conductive electrolyte membrane. The halide ion or pseudohalide ion is selected from chloride, bromide, iodide, azide, thiocyanate, and cyanide. In some embodiments, the electrochemical cell is a molten sodium rechargeable cell which functions at an operating temperature between about 100° C. and about 150° C.

Abstract: The use of particles of at least one crystalline oxide, preferably metal oxide, having an average particle size of less than 500 nm and a fluorine content of between 0.5 and 30% by weight, preferably between 0.5 and 5%, even more preferably between 1.0 and 4%, for the preparation of solid-state electrolytes, is described. Also described is a solid-state electrolyte, containing particles of at least one crystalline oxide, preferably metal oxide, having an average particle size of less than 500 nm, preferably between 10 and 500 nm, even more preferably between 50 and 300 nm; a fluorine content of between 0.5 and 30% by weight, preferably between 0.5 and 5%, even more preferably between 1 and 4%; an alkali or alkaline-earth metal content of between 0.5 and 10% by weight, preferably between 0.5 and 5%, even more preferably between 1 and 4%. Furthermore an inorganic-organic hybrid electrolyte obtainable by means of reaction of the aforementioned solid-state electrolyte with ionic liquids is described.

Abstract: The problem of the present invention is to provide a sulfide solid electrolyte material having excellent ion conductivity. The present invention solves the problem by providing a sulfide solid electrolyte material comprising an M1 element (such as a Li element), an M2 element (such as a Ge element and a P element), and an S element; having a peak in a position of 2?=29.58°±0.50° in an X-ray diffraction measurement using a CuK? line; and having an IB/IA value of less than 0.50 when a diffraction intensity at the peak of 2?=29.58°±0.50° is represented by IA and a diffraction intensity at a peak of 2?=27.33°±0.50° is represented by IB.

Abstract: The present technology relates to stabilizing additives and electrolytes containing the same for use in electrochemical devices such as lithium ion batteries and capacitors. The stabilizing additives include triazinane triones and bicyclic compounds comprising succinic anhydride, such as compounds of Formulas I and II described herein.

Abstract: The invention is directed to a solid ion conductor which has a garnet-like crystal structure and has the stoichiometric composition L7+xAxG3?xZr2O12, wherein L is in each case independently a monovalent cation, A is in each case independently a divalent cation, G is in each case independently a trivalent cation, 0?x?3 and O can be partly or completely replaced by divalent or trivalent anion.

Abstract: A sodium-chalcogen cell is described which is operable at room temperature, in particular a sodium-sulfur or sodium-oxygen cell, the anode and cathode of which are separated by a solid electrolyte which is conductive for sodium ions and nonconductive for electrons. The cathode of the sodium-chalcogen cell includes a solid electrolyte which is conductive for sodium ions and electrons. Moreover, a manufacturing method for this type of sodium-chalcogen cell is described.

Abstract: The present invention relates to novel compositions, electrodes, electrochemical storage devices (batteries) and ionic conduction devices that use cubic ionic conductor (“CUBICON”) compounds, preferably nitridophosphate compounds. The cubic ionic conductor compound have a framework formula [MT3X10]n- (1) and a general formula AxMT3X10 (2), where M is a cation in octahedral coordination, T is a cation in tetrahedral coordination, X is an anion, and the framework has a net negative charge of ?n, where a variable number of potentially mobile additional chemical species, A, can fit into the open space within this framework with a net charge of +n.

Abstract: The present invention relates to non-aqueous electrolytes having stabilization additives and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, a first additive that is a substituted or unsubstituted organoamine, substituted or unsubstituted alkane, substituted or unsubstituted alkene, or substituted or unsubstituted aryl compound, and/or a second additive that is a metal (chelato)borate. When used in electrochemical devices with, e.g., lithium manganese oxide spinel electrodes, the new electrolytes provide batteries with improved calendar and cycle life.