Abstract: Each of: (1) a nanoparticle comprising a substantially single crystalline mesoporous Co3O4 material; (2) a battery electrode comprising a plurality of nanoparticles comprising the substantially single crystalline mesoporous Co3O4 material; (3) a battery comprising the battery electrode comprising the plurality of nanoparticles comprising the substantially single crystalline mesoporous Co3O4 material; and (4) a plurality of methods for preparing the nanoparticle comprising the substantially single crystalline mesoporous Co3O4 material, may be employed within the context of a lithium containing battery, such as a lithium ion battery. When the substantially single crystalline mesoporous Co3O4 material has a pore size of about 3 to about 8 nanometers enhanced lithium containing battery electrical performance properties are observed.

Abstract: Provided is a positive electrode active material for a lithium ion battery positive electrode material made of lithium-containing nickel-manganese-cobalt composite oxide of a layered structure represented with LiaNixMnyCozO2 (1.0<a<1.3, 0.8<x+y+z<1.1), wherein, in a region with a molar volume Vm that is estimated from a lattice constant calculated from a (018) plane and a (113) plane in a powder X-ray diffraction pattern using CuK alpha rays as a vertical axis and Co ratio n (molar %) in metal components as a horizontal axis, the relationship thereof is within a range of Vm=21.276-0.0117 n as an upper limit and Vm=21.164-0.0122 n as a lower limit, and a half value width of both the (018) plane and the (113) plane is 0.200° or less.

Abstract: A cathode active material, a cathode including the cathode active material, and a lithium battery including the cathode. The cathode active material includes a lithium composite oxide and a lithium titanium oxide, wherein the lithium titanium oxide includes titanium having an average oxidation number of 4-y (0<y<2). The lithium titanium oxide is reduced.

Abstract: Lithium-containing nanofibers, as well as processes for making the same, are disclosed herein. In some embodiments described herein, using high throughput (e.g., gas assisted and/or water based) electrospinning processes produce nanofibers of high energy capacity materials with continuous lithium-containing matrices or discrete crystal domains.

Abstract: Provided is a cathode active material including a complex coating layer, which includes M below, formed on a surface of the cathode active material through reaction of a lithium transition metal oxide represented by Formula 1 below with a coating precursor: LixMO2??(1) wherein M is represented by MnaM?1-b, M? is at least one selected from the group consisting of Al, Mg, Ni, Co, Cr, V, Fe, Cu, Zn, Ti and B, 0.95?x?1.5, and 0.5?a?1. The lithium secondary battery including the cathode active material exhibits improved lifespan and rate characteristics due to superior stability.

Abstract: The present invention discloses a lithium-rich positive electrode material, a lithium battery positive electrode, and a lithium battery. The lithium-rich positive electrode material has a coating structure, where a general structural formula of a core of the coating structure is as follows: z[xLi2MO3·(1?x)LiMeO2]·(1?z)Li1+dMy2?dO, where in the formula, 0<x<1, 0<z<1, and 0<d<?; M is at least one of Mn, Ti, Zr, and Cr, Me is at least one of Mn, Co, Ni, Ti, Cr, V, Fe, Al, Mg, and Zr, and My is at least one of Mn, Ni, and Co; and a coating layer of the coating structure is a compound whose general formula is MmMz, where in the formula, Mm is at least one of Zn, Ti, Zr, and Al, and Mz is O or F. The lithium battery positive electrode and the lithium battery both include the lithium-rich positive electrode material.

Abstract: A novel lithium battery cathode, a lithium ion battery using the same and processes and preparation thereof are disclosed. The battery cathode is formed by force spinning. Fiber spinning allows for the formation of core-shell materials using material chemistries that would be incompatible with prior spinning techniques. A fiber spinning apparatus for forming a coated fiber and a method of forming a coated fiber are also disclosed.

Abstract: To provide an active material with high capacity, high initial charge-discharge efficiency, and high average discharge voltage. An active material according to the present invention includes a first active material and a second active material, wherein the ratio (?) of the second active material (B) to the total amount by mole of the first active material (A) and the second active material (B) satisfies 0.4 mol %???18 mol % [where ?=(B/(A+B))×100].

Abstract: The present disclosure refers to a cathode material composite having improved conductivity, and a cathode and electrochemical device having the cathode material composite. In accordance with one embodiment of the present disclosure, a conductive polymer is positioned on the surface of a shell present in the form of a tetragonal structure in the lithium manganese oxide, thereby enhancing electrical conductivity to be highly involved in reaction around 3V, and providing a conductive path to improve the capacity, life and rate characteristics of an electrochemical device.

Abstract: The disclosure provides a Ni—Mn composite oxalate powder, including a plurality of biwedge octahedron particles represented by the general formula: NiqMnxCoyMzC2O4.nH2O, wherein q+x+y+z=1, 0<q, x<1, 0?y<1, 0?z<0.15, 0?n?5, and M is at least one of Mg, Sr, Ba, Cd, Zn, Al, Ga, B, Zr, Ti, Ca, Ce, Y, Nb, Cr, Fe and V. The above powder may be further calcined with a lithium salt to form a lithium transition metal oxide powder for use as a positive electrode material in lithium ion-batteries.

Abstract: To achieve a power storage unit that can be repeatedly bent without a large decrease in charge and discharge capacity. In the flexible power storage unit, the content of a binder in an active material layer containing an active material is greater than or equal to 1 wt % and less than or equal to 10 wt %, preferably greater than or equal to 2 wt % and less than or equal to 8 wt %, and more preferably greater than or equal to 3 wt % and less than or equal to 5 wt %.

Abstract: The present invention provides an electrode material in which unevenness in a supporting amount of a carbonaceous film is less when using an electrode-active material having a carbonaceous film on a surface thereof as the electrode material, and which is capable of improving conductivity, and a method for producing the electrode material. The electrode material includes an aggregate formed by aggregating an electrode-active material in which a carbonaceous film is formed on a surface. In the electrode material, an average particle size of the aggregate is 0.5 to 100 ?m, a volume density of the aggregate is 50 to 80 vol % of a volume density in a case in which the aggregate is a solid, and 80% or more of the surface of the electrode-active material is covered with the carbonaceous film. Alternatively, the electrode material includes an aggregate formed by aggregating electrode-active material particles in which a carbonaceous film is formed on a surface.

Abstract: A nonaqueous electrolyte secondary battery disclosed in the present application includes: a positive electrode capable of absorbing and releasing lithium, containing a positive electrode active material composed of a lithium-containing transition metal oxide having a layered crystalline structure; and a negative electrode capable of absorbing and releasing lithium, containing a negative electrode active material composed of a lithium-containing transition metal oxide obtained by substituting some of Ti element of a lithium-containing titanium oxide having a spinel crystalline structure with one or more element different from Ti, wherein a retention of the negative electrode is set to be greater than a retention of the positive electrode, and an irreversible capacity rate of the negative electrode is set to be greater than an irreversible capacity rate of the positive electrode, whereby a discharge ends by negative electrode limitation.

Abstract: A cathode active material is provided. The cathode active material includes: a composite oxide particle including at least lithium and cobalt; a coating layer which is provided in at least a part of the composite oxide particle and includes an oxide including lithium and a coating element of at least one of nickel and manganese; and a surface layer which is provided in at least a part of the coating layer and includes at least one element selected from the group consisting of silicon, tin, phosphorus, magnesium, boron, zinc, tungsten, aluminum, titanium, and zirconium.

Abstract: An energy storage device includes a nanostructured network and an electrolyte in contact with the nanostructured network. The nanostructured network is an electrically conducting nanostructured network that provides combined functions of an electrode and a charge collector of the energy storage device. An electrical device includes an energy storage device that includes a nanostructured network and an electrolyte in contact with the nanostructured network, and a load-bearing electrical circuit electrically connected to the electrical energy storage device. The energy storage device is suitable to power the electrical device while in operation.

Abstract: A positive electrode active material for a lithium secondary battery, the material represented by the formulas: LiNi(1-x-y)CoxAlyO2 or LiNi(1-x-y)CoxMnyO2 (0.1<x?0.15 and 0.03<y<0.1), and whose X-ray diffraction peak intensity ratio 1(2?=45 degrees)/I(2?=18 degrees) of an X-ray diffraction peak intensities found in the vicinity of an X-ray diffraction-scanning angle 2? of about 45 degrees, to an X-ray diffraction peak intensity found in the vicinity of an X-ray diffraction-scanning angle 2? of about 18 degrees, is in the range of from 46% to 51%. The positive electrode active material is fabricated by mixing Ni(1-x-y)CoxAlyO2 or Ni(1-x-y)CoxMnyO2 (0.1<x?0.15 and 0.03<y<0.1) with lithium hydrates (LiOH.H2O); and calcinating the mixture at a temperature of 750° C., for more than 30 hrs, under an oxygen atmosphere.

Abstract: A battery includes a positive electrode, a negative electrode including a negative active material layer containing hardly-graphitizable carbon as a negative active material and an aqueous binder, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The negative active material layer has a density of not less than 0.81 g/cc and not more than 1.01 g/cc. The negative active material has a particle size D90 of not less than 1.9 ?m and not more than 11.5 ?m, the particle size D90 being a particle size at which the cumulative volume is 90% in the particle size distribution.

Abstract: Provided is a lithium metal compound oxide having a layered structure, which is very excellent as a positive electrode active material of a battery that is mounted on, particularly, an electric vehicle or a hybrid vehicle. Suggested is a lithium metal compound oxide having a layered structure which is expressed by general formula of Li1+xM1?xO2 (M represents metal elements including three elements of Mn, Co, and Ni). In the lithium metal compound oxide having a layered structure, D50 is more than 4 ?m and less than 20 ?m, a ratio of a primary particle area to a secondary particle area of secondary particles having a size corresponding to the D50 (“primary particle area/secondary particle area”) is 0.004 to 0.035, and the minimum value of powder crushing strength that is obtained by crushing a powder using a microcompression tester is more than 70 MPa.

Abstract: A positive-electrode active material for a non-aqueous electrolyte secondary battery according to the present disclosure contains a layered lithium(Li)-containing transition metal composite oxide that contains Li in the transition metal layer and more than 0.4 ?mol/g and less than 25 ?mol/g of iodine (I) or bromine (Br).

Abstract: Provided is a cathode active material composed of lithium nickel oxide represented by Formula 1, wherein the lithium nickel oxide contains nickel in an amount of 40% or higher, based on the total weight of transition metals, and the cathode active material comprises a first coating layer provided on the surface thereof and a second coating layer provided on the surface of the first coating layer, wherein the first coating layer is composed of a non-reactive material selected from the group consisting of oxides, nitrides, sulfides and mixtures or complexes thereof and the second coating layer is composed of a carbon-based material.

Abstract: The present invention provides a positive electrode for a secondary battery that can suppress a phenomenon in which, after the solid electrolyte interface is formed once, when a damaged portion where a solid electrolyte interface is partially broken happens to arise in the solid electrolyte interface, the continued deterioration in the performance of charge-discharge cycle of the secondary battery is induced thereby, and a secondary battery using said positive electrode for a secondary battery. The positive electrode for a secondary battery according to the present invention comprises water that is chemically adsorbed beforehand in the positive electrode, wherein the concentration of the chemically adsorbed water, which is comprised in the positive electrode beforehand, is set in the range of 0.03% by mass to 0.15% by mass based on the positive electrode.

Abstract: According to one embodiment, a nonaqueous electrolyte battery including a positive electrode, a negative electrode, a separator, a copper-containing member, and a nonaqueous electrolyte is provided. The negative electrode includes a negative electrode current collector and a negative electrode active material-containing layer. The negative electrode current collector includes aluminum or aluminum alloy. The negative electrode active material-containing layer is formed on the negative electrode current collector. The copper-containing member includes copper or copper alloy. The copper-containing member is electrically connected to the negative electrode current collector to prevent from over-discharge.

Abstract: A positive active material, a method of preparing the same, and a lithium battery including the same.

Abstract: A lithium-ion secondary battery comprising a positive electrode and a negative electrode is provided. The positive electrode comprises as a positive electrode active material a lithium transition metal composite oxide having a layered structure. The composite oxide contains as its metal components at least one species of Ni, Co and Mn as well as W and Ca. The composite oxide contains 0.26 mol % or more, but 5 mol % or less of W and Ca combined when all the metal elements contained in the oxide excluding lithium account for a total of 100 mol %, with the ratio (mW/mCa) of the number of moles of W contained, mW, to the number of moles of Ca contained, mCa, being 2.0 or larger, but 50 or smaller.

Abstract: A cathodal material for lithium cells comprises a porous lithium oxide microparticle is provided. The porous lithium oxide microparticle comprises a plurality of porous lithium oxide nanoparticles formed with a first conductive layer therein, a pore defined by connecting the lithium oxide nanoparticles, a second conductive layer covering at least a surface of one of the lithium oxide nanoparticles contacting the first conductive layer and forming a three-dimensional conductive network between the lithium oxide nanoparticles, and a conductive fiber connecting with the second conductive layer.

Abstract: An object of the present invention is to provide a lithium ion battery which is excellent in properties at large current and can be applied to applications requiring high output power even when the mixture layers are made thick. The present invention provides a lithium ion battery including a positive electrode including a positive electrode mixture layer formed on a current collector, a negative electrode including a negative electrode mixture layer formed on a current collector and an electrolyte, the positive electrode and the negative electrode being disposed through the intermediary of a separator, wherein the positive electrode includes as a positive electrode active material a lithium composite oxide represented by LiNiaMnbCOcMdO2 (in the formula, M is at least one selected from the group consisting of Fe, V, Ti, Cu, Al, Sn, Zn, Mg, B and W, a+b+c+d=1, 0.2?a?0.8, 0.1?b?0.4, 0?c?0.4 and 0?d?0.

Abstract: Process for preparing lithium mixed metal oxides which comprise essentially lithium, manganese, cobalt and nickel as metal atoms and have a stoichiometric ratio of lithium to the total transition metals of greater than 1, which comprises a) the preparation of a mixture designated as intermediate (B) which comprises essentially lithium-comprising mixed metal hydroxides and lithium-comprising mixed metal oxide hydroxides, where manganese, cobalt and nickel are comprised in the ratio (1-a-b):a:b and the oxidation state averaged over all ions of manganese, cobalt and nickel is at least 4-1.75a-1.75b, where 0?a?0.5 and 0.1?b?0.8, by a thermal treatment carried out with continual mixing and in the presence of oxygen of a mixture (A) comprising at least one transition metal compound and at least one lithium salt (L), during which L does not melt, and b) the thermal treatment carried out without mixing and in the presence of oxygen of the intermediate (B).

Abstract: Using metal foams for the electrode of secondary lithium battery, preparing method thereof, and secondary lithium battery including the metal foam. A metal foam is used in an electrode of secondary lithium battery where the surface and the inner pore walls are coated with the active materials, a method of manufacturing such metal foam, and secondary lithium battery including the metal foam.

Abstract: In a lithium-ion secondary battery (100), positive electrode active material particles (610) each include a shell portion (612) made of a layered lithium-transition metal oxide, a hollow portion (614) formed inside the shell portion (612), and a through-hole (616) penetrating through the shell portion (612). A positive electrode active material layer (223) has a density A of 1.80 g/cm3?A?2.35 g/cm3, and a negative electrode active material layer (243) has a density B of 0.95 g/cm3?B?1.25 g/cm3.

Abstract: Dry process based energy storage device structures and methods for using a dry adhesive therein are disclosed.

Abstract: A compound having a high reduction resistance and being capable of sufficiently performing a function as an electronic conductive additive when added to a positive electrode active material as an electronic conductive additive is provided. In a method for producing a cobalt cerium compound including a step of depositing a hydroxide containing cobalt and cerium in an aqueous solution containing cobalt ions and cerium ions by changing the pH of the aqueous solution and thereafter performing a treatment of oxidizing the hydroxide, the ratio of the cerium ions contained in the aqueous solution containing the cobalt ions and the cerium ions is set to be more than 5% by atom and 70% by atom or less with respect to the sum of the cobalt ions and the cerium ions before the hydroxide is deposited.

Abstract: Disclosed is a cathode active material in which lithium cobalt oxide particles and manganese (Mn) or titanium (Ti)-containing lithium transition metal oxide particles co-exist and a method of preparing the same.

Abstract: An object is to provide a positive electrode for a non-aqueous electrolyte secondary battery and a non-aqueous electrolyte secondary battery that allow a high output characteristic. Included are a positive electrode collector and a positive electrode mixture layer formed on at least one surface of the positive electrode collector. The positive electrode mixture layer contains particles 3 of lithium nickel cobalt manganese oxide represented by LiNi0.55Co0.20Mn0.25O2, erbium oxyhydroxide 1 fixed on the surfaces of the particles of the lithium nickel cobalt manganese oxide 3, tungsten trioxide 2 adhering to the surfaces of the particles of the lithium nickel cobalt manganese oxide 3, and a binder.

Abstract: To provide a cathode active material for a lithium ion secondary battery, which has high packing properties and high volume capacity density, and a method for its production.

Abstract: The present invention provides a cathode (positive electrode) of a lithium battery and a process for producing this cathode. The electrode comprises a cathode active material-coated graphene sheet and the graphene sheet has two opposed parallel surfaces, wherein at least 50% area (preferably >80%) of one of the two surfaces is coated with a cathode active material coating. The graphene material is in an amount of from 0.1% to 99.5% by weight and the cathode active material is in an amount of at least 0.5% by weight (preferably >80% and more preferably >90%), all based on the total weight of the graphene material and the cathode active material combined. The cathode active material is preferably an inorganic material, an organic or polymeric material, a metal oxide/phosphate/sulfide, or a combination thereof. The invention also provides a lithium battery, including a lithium-ion, lithium-metal, or lithium-sulfur battery.

Abstract: Provided is a lithium secondary battery with three-dimensional network porous bodies as current collectors in which the internal resistance does not increase even after repeated charging and discharging. A lithium secondary battery including a positive electrode and a negative electrode each having as a current collector a three-dimensional network porous body, the positive electrode and the negative electrode being formed by filling at least an active material into pores of the three-dimensional network porous bodies, wherein the three-dimensional network porous body for the positive electrode is a three-dimensional network aluminum porous body having a hardness of 1.2 GPa or less, and the three-dimensional network porous body for the negative electrode is a three-dimensional network copper porous body having a hardness of 2.6 GPa or less.

Abstract: A secondary battery includes: a cathode; an anode; and a non-aqueous electrolytic solution, wherein the cathode includes a second lithium-containing compound having an olivine-type crystal structure, a photoelectron spectrum of oxygen 1s obtained by surface analysis of the cathode with the use of X-ray photoelectron spectroscopy includes a third peak and a fourth peak, the third peak having an apex in a range in which binding energy is equal to or larger than 530 electron volts and less than 533 electron volts, and the fourth peak having an apex in a range in which binding energy is from 533 electron volts to 536 electron volts both inclusive and having spectrum intensity smaller than spectrum intensity of the third peak, and a ratio IE/ID between a spectrum intensity ID of the third peak and a spectrum intensity IE of the fourth peak is larger than ¼.

Abstract: The invention relates to electrodes that contain active materials of the formula: AaMbXzOy wherein A is one or more alkali metals selected from lithium,sodium and potassium; M is selected from one or more transition metals and/or one or more non-transition metals and/or one or more metalloids; X comprises one or more atoms selected from niobium, antimony, tellurium, tantalum, bismuth and selenium; and further wherein 0<a?6; b is in the range: 0<b?4; x is in the range 0<x?1 and y is in the range 2?y?10. Such electrodes are useful in, for example, sodium and/or lithium ion battery applications.

Abstract: An all-solid-state cell contains at least a positive electrode layer, a solid electrolyte layer, and a negative electrode layer, which are arranged in a stack. The positive electrode layer contains only a positive electrode active material, and a predetermined crystal plane of the positive electrode active material is oriented in a direction of lithium ion conduction. The negative electrode layer contains a carbonaceous material, and the volume ratio of the carbonaceous material to the negative electrode layer is 70% or greater.

Abstract: An electrolyte comprising an organic solvent, a lithium salt, and a polymer additive comprised of repeating vinyl units joined to one or more heterocyclic amine moieties is described. The heterocyclic amine contains five to ten ring atoms, inclusive. An electrochemical cell is also disclosed. The preferred cell comprises a negative electrode which intercalates with lithium, a positive electrode comprising an electrode active material which intercalates with lithium, and the electrolyte of the present invention activating the negative and the positive electrodes.

Abstract: In a battery production process, a positive electrode active material having a reaction-suppressing layer that does not easily peel off formed on the surface thereof, and a positive electrode and an all-solid-state battery that use said material are provided. The present invention involves positive electrode active material particles for an all-solid-state battery containing sulfide-based solid electrolyte. The positive electrode active material particles are an aggregate containing two or more particles. The surface of the aggregate is coated with a reaction-suppressing layer for suppressing reactions with the sulfide-based solid electrolyte.

Abstract: An electron collector structure and a lithium battery including the same are disclosed. The electron collector structure includes a conductive thin film; and a graphene layer that is coated on the surface of the conductive thin film and may improve the electrical conductivity of an electrode plate. As an electrode of the lithium battery includes the electron collector structure, the electrical conductivity of the electrode may be increased so that the energy consumption properties as well as the lifespan characteristics of the lithium battery may be also improved.

Abstract: Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a mixture of a lithium/manganese spinel oxide having a substitution of a manganese (Mn) site with a certain metal ion and a lithium/nickel/cobalt/manganese composite oxide, as a cathode active material.

Abstract: The present disclosure provides a sheet-form electrode for a secondary battery, comprising a current collector; an electrode active material layer formed on one surface of the current collector; a conductive layer formed on the electrode active material layer and comprising a conductive material and a binder; and a first porous supporting layer formed on the conductive layer. The sheet-form electrode for a secondary battery according to the present disclosure has supporting layers on at least one surfaces thereof to exhibit surprisingly improved flexibility and prevent the release of the electrode active material layer from a current collector even if intense external forces are applied to the electrode, thereby preventing the decrease of battery capacity and improving the cycle life characteristic of the battery.

Abstract: Provided an all-solid lithium secondary battery hardly gives rise to internal resistance even if charging and discharging are repeated. The all-solid lithium secondary battery including a positive electrode and a negative electrode, each of electrodes being an electrode in which a three-dimensional network porous body is used as a current collector and pores of the three-dimensional network porous body are filled with at least an active material, wherein the three-dimensional network porous body of the positive electrode includes an aluminum alloy with a Young's modulus of 70 GPa or higher and the three-dimensional network porous body of the negative electrode includes a copper alloy with a Young's modulus of 120 GPa or higher.

Abstract: A cathode active material, a preparation method thereof, and a cathode for a lithium secondary battery and a lithium secondary battery including the cathode active material, wherein the cathode active material includes a core active material represented by Formula 1 below; and a coating layer formed on a surface of the core active material, the coating layer including lithium gallium oxide: Lia(A1-x-yBxCy)O2 ??Formula 1 In Formula 1, a, x, y, A, B, and C are defined in the detailed description.

Abstract: Provided are a current collector, an electrode, and a nonaqueous electrolyte secondary battery, each of which capable of reducing internal resistance and producing cost. More specifically, provided are: a three-dimensional network metal porous body for a current collector, comprising a sheet-shaped three-dimensional network metal porous body, wherein a degree of porosity of the sheet-shaped three-dimensional network metal porous body is 90% or more and 98% or less, and a 30%-cumulative pore diameter (D30) of the sheet-shaped three-dimensional network metal porous body calculated from a fine pore diameter measurement conducted by a bubble point method is 20 ?m or more and 100 ?m or less; an electrode using the three-dimensional network metal porous body; and a nonaqueous electrolyte secondary battery including the electrode.

Abstract: The present invention provides a LiCoO2-containing powder comprising LiCoO2 having a stoichiometric composition via heat treatment of a lithium cobalt oxide and a lithium buffer material to make equilibrium of a lithium chemical potential there between; a lithium buffer material which acts as a Li acceptor or a Li donor to remove or supplement Li-excess or Li-deficiency, coexisting with a stoichiometric lithium metal oxide; and a method for preparing a LiCoO2-containing powder. Further, provided is an electrode comprising the above-mentioned LiCoO2-containing powder as an active material, and a rechargeable battery comprising the same electrode.

Abstract: An active material for a nonaqueous electrolyte secondary battery includes a lithium transition metal composite oxide which has an ?-NaFeO2-type crystal structure, is represented by the compositional formula Li1+?Me1??O2 (Me is a transition metal element containing Mn, Ni and Co; and 0<?<1) and satisfies the requirement of 1.250?(1+?)/(1??)?1.425. The half-width of a diffraction peak at 2?=18.6°±1° is 0.20° to 0.27° and/or the half-width of a diffraction peak at 2?=44.1°±1° is 0.26° to 0.39° in X-ray diffraction measurement using a CuK? radiation. The lithium transition metal composite oxide is observed as a single phase indexed a hexagonal crystal (space group R3-m) on the X-ray diffraction patterns when electrochemically oxidized to a potential of 5.0 V (vs. Li/Li+).

Abstract: The invention relates to Chevrel-phase materials and methods of preparing these materials utilizing a precursor approach. The Chevrel-phase materials are useful in assembling electrodes, e.g., cathodes, for use in electrochemical cells, such as rechargeable batteries. The Chevrel-phase materials have a general formula of Mo6Z8 and the precursors have a general formula of MxMo6Z8. The cathode containing the Chevrel-phase material in accordance with the invention can be combined with a magnesium-containing anode and an electrolyte.