Abstract: Provided are an electrode assembly and a secondary battery having the same. The electrode assembly includes a positive electrode including a positive electrode active material layer, a negative electrode including a negative electrode active material layer, and a separator for separating the positive and negative electrodes from each other. The negative electrode active material layer includes a metal capable of alloying with lithium or lithium vanadium oxide (LiV3O5), the separator includes a porous layer formed by combining a ceramic material with a binder, and the content of the binder is from about 5 to about 15 wt % with respect to 100 wt % of the porous layer.

Abstract: An electrochemical energy source, comprising: a substrate, and at least one stack deposited onto said substrate, the stack comprising at least the active layers: an anode, a cathode, and an intermediate solid-state electrolyte separating said anode and said cathode. An electronic device provided with an electrochemical energy source according to the invention and a method for the manufacturing of an electrochemical source according to the invention.

Abstract: A compound comprising a composition Ax(M?1-aM?a)y(XD4)z, Ax(M?1-aM?a)y(DXD4)z, or Ax(M?1-aM?a)y(X2D7)z, and have values such that x, plus y(1?a) times a formal valence or valences of M?, plus ya times a formal valence or valence of M?, is equal to z times a formal valence of the XD4, X2D7, or DXD4 group; or a compound comprising a composition (A1-aM?a)xM?y(XD4)z, (A1-aM?a)xM?y(DXD4)z (A1-aM?a)xM?y(X2D7)z and have values such that (1?a)x plus the quantity ax times the formal valence or valences of M? plus y times the formal valence or valences of M? is equal to z times the formal valence of the XD4, X2D7 or DXD4 group. In the compound, A is at least one of an alkali metal and hydrogen, M? is a first-row transition metal, X is at least one of phosphorus, sulfur, arsenic, molybdenum, and tungsten, M? any of a Group IIA, IIIA, IVA, VA, VIA, VIIA, VIIIA, IB, IIB, IIIB, IVB, VB, and VIB metal, D is at least one of oxygen, nitrogen, carbon, or a halogen, 0.0001<a?0.1, and x, y, and z are greater than zero.

Abstract: A reverse configuration, lithium thin film battery (300) having a buried lithium anode layer (305) and process for making the same. The present invention is formed from a precursor composite structure (200) made by depositing electrolyte layer (204) onto substrate (201), followed by sequential depositions of cathode layer (203) and current collector (202) on the electrolyte layer. The precursor is subjected to an activation step, wherein a buried lithium anode layer (305) is formed via electroplating a lithium anode layer at the interface of substrate (201) and electrolyte film (204). The electroplating is accomplished by applying a current between anode current collector (201) and cathode current collector (202).

Abstract: The invention relates to an electrode material and a composite electrode including same. The electrode material consists of particles or particulate aggregates of a complex LiiMmM?m?ZzOoNnFf oxide, wherein M is at least one transition metal, M? is at least one metal other than a transition metal, Z is at least one non-metal, coefficients i, m, m?, z, o, n and f are selected in such a way that the complex oxide is electrically neutral, with i=0, m>0, z=0, m?=0, o>0, n=0 and f=0. At least part of the complex oxide particle or particulate aggregate surface is coated with a carbon layer bound by chemical bonds and/or physical bonds to the carbon. The complex oxide has formula; the carbon has covalently bonded functional groups GF.

Abstract: A rechargeable lithium-ion cell contains a positive electrode, negative electrode, charge-carrying electrolyte containing charge carrying medium and lithium salt, and cycloaliphatic N-oxide compound dissolved in or dissolvable in the electrolyte. The N-oxide compound has an oxidation potential above the positive electrode recharged potential and serves as a cyclable redox chemical shuttle providing cell overcharge protection.

Abstract: Composite cathode active materials having a large diameter active material and a small diameter active material are provided. The ratio of the average particle diameter of the large diameter active material to the average particle diameter of the small diameter active material ranges from about 6:1 to about 100:1. Mixing the large and small diameter active materials in a proper weight ratio improves packing density Additionally, including highly stable materials and highly conductive materials in the composite cathode active materials improves volume density, discharge capacity and high rate discharge capacity.

Abstract: When a layered crystal material of vanadium pentoxide that can be used as a positive electrode active material is manufactured, a sulfur-containing organic material is not used as a raw material in the present invention. Therefore, uncertain adhesion of the sulfur-containing organic material to the layered crystal material is eliminated. The property of the suspension containing a vanadium compound and plural lithium compounds such as lithium sulfide and lithium hydroxide is adjusted by using these lithium compounds. By this adjustment, the pentavalence of the vanadium ions is controlled to be a desired ratio. Consequently, an active material having reproducibility can be manufactured. First discharge energy of a lithium ion secondary battery using the active material can be enhanced.

Abstract: The present invention is directed to lithium-ion batteries in general and more particularly to lithium-ion batteries based on aligned graphene ribbon anodes, V2O5 graphene ribbon composite cathodes, and ionic liquid electrolytes. The lithium-ion batteries have excellent performance metrics of cell voltages, energy densities, and power densities.

Abstract: Provided is a cathode active material including a lithium metal oxide of Formula 1 below: Li[LixMeyMz]O2+d ??<Formula 1> wherein x+y+z=1; 0<x<0.33; 0<z<0.1; 0?d?0.1; Me is at least one metal selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Al, Mg, Zr, and B; and M is at least one metal selected from the group consisting of Mo, W, Ir, Ni, and Mg.

Abstract: A nonaqueous electrolyte battery includes a positive electrode and a negative electrode. The positive electrode comprises a positive electrode layer containing a metal compound. The metal compound contains lithium and at least one kind of metal selected from the group consisting of cobalt, nickel, manganese, iron and vanadium. The negative electrode comprises a negative electrode layer containing a negative electrode active material having a Li ion insertion potential not lower than 0.4 V (vs. Li/Li+). The positive electrode layer and the negative electrode layer satisfy formulas (1) to (3) given below: 0.5m2/g?Sn?50m2/g??(1) 5?(Sn/Sp)?100??(2) 0.5?(Lp/Ln)<1??(3).

Abstract: A lithium-ion battery includes a positive electrode that has a current collector and a first active material and a negative electrode that has a current collector, a second active material, and a third active material. The second active material includes a lithium titanate material and the third active material is a material that can be one or more of the following: LiMn2O4, LixVO2 where x is between 0.05 and 0.4, LiMxMn(2-x)O4 where M is a metal and x is less than or equal to 1, V6O13, V2O5, V3O8, MoO3, TiS2, WO2, MoO2, RuO2, and combinations thereof. The third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material.

Abstract: Novel process for the preparation of finely divided, nano-structured, olivine lithium metal phosphates (LiMPO.sub.4) (where metal M is iron, cobalt, manganese, nickel, vanadium, copper, titanium and mix of them) materials have been developed. This so called Polyol” method consists of heating of suited precursor materials in a multivalent, high-boiling point multivalent alcohol like glycols with the general formula HO—(—C2H4O—).sub.n-H where n=1-10 or HO—(—C3H6O—).sub.n.-H where n=1-10, or other polyols with the general formula HOCH2—(—C3H5OH—).sub.n-H where n=1-10, like for example the tridecane-1,4,7,10,13-pentaol. A novel method for implementing the resulting materials as cathode materials for Li.-ion batteries is also developed.

Abstract: A cathode active material of formula (1) below, and a lithium secondary battery using the same, have an extended cycle life and effective charging/discharging characteristics and include a compound of formula (1) below: LixCoyM1-yA2??(1) where 0.95?x?1.0; 0?y?1; M is at least one selected from the group consisting of Ni, Fe, Pb, Mg, Al, K, Na, Ca, Si, Ti, Sn, V, Ge, Ga, B, As, Zr, Mn, and Cr; and A is one selected from the group consisting of O, F, S, and P. The cathode active material has, as measured by Raman spectroscopy, a ratio of peak intensities between spinel and hexagonal A1g vibrational modes in an approximate range of 1:0.1-1:0.4, a ratio of peak intensities between hexagonal A1g and Eg vibrational modes in an approximate range of 1:0.9-1:3.5, and a ratio of peak intensities between spinel A1g and F2g vibrational modes in an approximate range of 1:0.2-1:0.4.

Abstract: This invention concerns a lithium rechargeable electrochemical cell containing electrochemical redox active compounds in the electrolyte. The cell is composed of two compartments, where the cathodic compartment comprises a cathodic lithium insertion material and one or more of p-type redox active compound(s) in the electrolyte; the anodic compartment comprises an anodic lithium insertion material and one or more of n-type redox active compound(s) in the electrolyte. These two compartments are separated by a separator and the redox active compounds are confined only in each compartment. Such a rechargeable electrochemical cell is suitable for high energy density applications. The present invention also concerns the general use of redox active compounds and electrochemically addressable electrode systems containing similar components which are suitable for use in the electrochemical cell.

Abstract: Composite cathode active materials comprising a composite oxide and an acid treated with an organic solvent are provided. The composite cathode active materials are prepared by treating mixtures of nickel-based composite oxides and organic acids with organic solvents. The active materials suppress gelation of the electrode slurries for a long period of time, even when the active materials are mixed with fluorine-based polymers, by decreasing the basicity of the slurries and the amount of lithium present on the surfaces of the active materials. As a result, electrode slurries having high stability can be prepared. Cathodes and lithium batteries comprising the slurries have excellent charge-discharge characteristics, including high capacity and excellent high rate discharge characteristics.

Abstract: In a lithium ion secondary battery including a positive electrode, a negative electrode containing an alloy-based negative electrode active material, a separator, a positive electrode lead, a negative electrode lead, a gasket, and an outer case, the positive electrode is allowed to contain an oxygen deficient non-stoichiometric oxide, or an oxygen removing layer containing an oxygen deficient non-stoichiometric oxide is provided between the positive electrode and the separator. In a lithium ion secondary battery containing the alloy-based negative electrode active material, a reaction between oxygen generated in the positive electrode and the alloy-based negative electrode active material, and heat generation accompanying the reaction are prevented.

Abstract: Lithium insertion compound having the following formula (I): Li?M?M1vM2wM3xM4yM5zB?(XO4??Z?)1??(I) M is selected from V2+, Mn2+, Fe2+, Co2+ and Ni2+; M1 is selected from Na+ and K+; M2 is selected from Mg2+, Zn2+, Cu2+, Ti2+, and Ca2+; M3 is selected from Al3+, Ti3+, Cr3+, Fe3+, Mn3+, Ga3+, and V3+; M4 is selected from Ti4+, Ge4+, Sn4+, V4+, and Zr4+; M5 is selected from V5+, Nb5+, and Ta5+; X is an element in oxidation state m, exclusively occupying a tetrahedral site and coordinated by oxygen or a halogen, which is selected from B3+, Al3+, V5+, Si4+, P5+, S6+, Ge4+ and mixtures thereof; Z is a halogen selected from F, Cl, Br and I; the coefficients ?, ?, v, w, x, y, z, ? and ? are all positive and satisfy the following equations: 0???2??(1); 1???2??(2); 0<???(3); 0???2??(3); 0???2??(4); ?+2?+3?+v+2w+3x+4y+5z+m=8????(5); and 0 < ? ? + v + w + x + y + z ? 0.1 , preferably, 0 < ? ? + v + w + x + y + z ? 0.05 . Methods for preparing these compounds.

Abstract: An electrochemical cell comprises as an anode, a lithium transition metal oxide or sulphide compound which as a [B2]X4n- spinel-type framework structure of an A[B2]S4 spinel wherein A and B are metal cations selected from Li, Ti, V, Mn, Fe and Co, X is oxygen or sulphur, and n- refers to the overall charge of the structural unit [B2]X4 of the framework structure. The transition metal cation in the fully discharged state has a mean oxidation state greater than +3 for Ti, +3 for V, +3.5 for Mn, +2 for Fe and +2 for Co. The cell includes as a cathode, a lithium metal oxide or sulphide compound. An electrically insulative lithium containing liquid or polymeric electronically conductive electrolyte is provided between the anode and the cathode.

Abstract: A powder material comprising a compound which electrochemically intercalates and deintercalates a lithium ion. The powder material is comprised mainly of a compound containing at least an oxygen element, a sulfur element and at least one transition metal element.

Abstract: Cathode active materials for lithium batteries are provided. In one embodiment, the cathode active material is a lithium complex material represented by the following Formula: yLi[Li1/3Me2/3]O2-(1-y)LiMe?O2. In the formula, 0<y?0.8, Me is a metal group having an oxidation number of +4 and includes a transition metal selected from Mo, W, V, Ti, Zr, Ru, Rh, Pd, Os, Ir, Pt and combinations thereof, and Me? includes a transition metal selected from Ni, Mn, Co and combinations thereof. Lithium batteries employing the cathode active materials are also provided and exhibit improved energy density and high-rate capabilities of an electrode.

Abstract: A lithium metal oxide positive electrode for a non-aqueous lithium cell is disclosed. The cell is prepared in its initial discharged state and has a general formula xLiMO2.(1?x)Li2M?O3 in which 0<x<1, and where M is one or more ion with an average trivalent oxidation state and with at least one ion being Mn or Ni, and where M? is one or more ion with an average tetravalent oxidation state. Complete cells or batteries are disclosed with anode, cathode and electrolyte as are batteries of several cells connected in parallel or series or both.

Abstract: In a non-aqueous electrolyte secondary battery using a layered lithium-transition metal composite oxide as a positive electrode active material, elevated-temperature durability, that is, elevated-temperature storage performance is enhanced without degrading battery capacity. The non-aqueous electrolyte secondary battery includes: a positive electrode including, as a positive electrode active material, layered lithium-transition metal composite oxide containing lithium, nickel, and manganese; a negative electrode active material capable of intercalating and deintercalating lithium; and a non-aqueous electrolyte having lithium ion conductivity, and the lithium-transition metal composite oxide contains a group IVA element and a group IIA element of the periodic table.

Abstract: A cathode with a cathode active material is provided. The cathode active material is obtained by mixing a zirconium-containing lithium cobalt composite oxide containing zirconium as a sub-component element in a first lithium cobalt composite oxide expressed by a formula LitCoMsO2 (where M is at least one kind of element selected from Fe, V, Cr, Ti, Mg, Al, B, and Ca; 0?s?0.03; 0.05?t?1.15), and a second lithium cobalt composite oxide expressed by a formula LixCol-yAyO2 (where A is at least one kind of element selected from Mg and Al; 0.05?x?1.15; 0?y?0.03).

Abstract: A non-aqueous electrolyte secondary battery has a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte solution. The positive electrode has a theoretical capacity per unit area from 3.0 to 4.5 mAh/cm2. The non-aqueous electrolyte solution contains ethylene carbonate (EC), ethylmethyl carbonate (EMC), and dimethyl carbonate (DMC) as solvents, and LiPF6 as an electrolyte, with volume ratios from 10 to 20% for EC, 10 to 20% for EMC, and 60 to 80% for DMC relative to all the solvents in the electrolyte solution. The concentration of the LiPF6 is from 1.30 to 1.50 mol/L.

Abstract: The invention provides novel lithium-mixed metal materials which, upon electrochemical interaction, release lithium ions, and are capable of reversibly cycling lithium ions. The invention provides a rechargeable lithium battery which comprises an electrode formed from the novel lithium-mixed metal materials. Methods for making the novel lithium-mixed metal materials and methods for using such lithium-mixed metal materials in electrochemical cells are also provided. The lithium-mixed metal materials comprise lithium and at least one other metal besides lithium. Preferred materials are lithium-mixed metal phosphates which contain lithium and two other metals besides lithium.

Abstract: A high capacity, high charge rate lithium secondary cell includes a high capacity lithium-containing positive electrode in electronic contact with a positive electrode current collector, said current collector in electrical connection with an external circuit, a high capacity negative electrode in electronic contact with a negative electrode current collector, said current collector in electrical connection with an external circuit, a separator positioned between and in ionic contact with the cathode and the anode, and an electrolyte in ionic contact with the positive and negative electrodes, wherein the total area specific impedance for the cell and the relative area specific impedances for the positive and negative electrodes are such that, during charging at greater than or equal to 4C, the negative electrode potential is above the potential of metallic lithium.

Abstract: A lithium and vanadium oxide is described having the formula Li1+xV3O8, wherein 0.1?×?0.25. The oxide has a monoclinic crystalline structure and comprises non-agglomerated grains in the form of monocrystalline pellets having a length L of between 1 and 100 ?m, a width W such that 4<L/W<100, and a thickness t such that 4 L/t<100, with t<W, the elongation axis of the pellets being axis b of the monoclinic cell. The oxide may be prepared by mixing the Li and V precursors, without grinding or compression, heating said mixture to 565° C.-585° C. and de-agglomerating the product obtained. The oxide is suitable for use as an active material for the positive electrode of a lithium battery.

Abstract: The present invention relates to Lithium Metal batteries. In particular, it is related to lithium metal batteries containing a polyimide-based electrolyte. The present invention concerns a new concept of polyimide-based electrolytic component having an electrolyte consisting of at least one solvent and at least one alkali metal salt, with specific amounts of solvents, to optimize the properties of conductivity of the polyimide-based electrolyte and the mechanical properties of the polyimide-based electrolyte separator towards metallic lithium anode to prevent dendrites growths.

Abstract: Cathode active materials for lithium batteries are provided. In one embodiment, the cathode active material is a lithium complex material represented by the following Formula: yLi[Li1/3Me2/3]O2-(1-y)LiMe?O2. In the formula, 0<y?0.8, Me is a metal group having an oxidation number of +4 and includes a transition metal selected from Mo, W, V, Ti, Zr, Ru, Rh, Pd, Os, Ir, Pt and combinations thereof, and Me? includes a transition metal selected from Ni, Mn, Co and combinations thereof. Lithium batteries employing the cathode active materials are also provided and exhibit improved energy density and high-rate capabilities of an electrode.

Abstract: Active materials for batteries are provided. According to an embodiment of the present invention, the active material includes a core material including a compound capable of electrochemical oxidation/reduction and a lithium ion conducting layer surrounding the core material. The lithium ion conducting layer includes a compound selected from the group consisting of lithium ion conductor, lithium ion conductive polymers, and mixtures thereof.

Abstract: The present invention provides: an electrode material for a lithium secondary battery containing lithium boron mixed oxide having a monoclinic LiBO2 structure and represented by a chemical formula LiB1-xDxO2-yEy (wherein, D represents a substitution element of boron B, E represents a substitution element of oxygen O, 0<x<0.5, and 0?y<0.1); an electrode structure employing the electrode material; and a lithium secondary battery having the electrode structure. Accordingly, the present invention provides: an electrode material for a lithium secondary battery having a voltage of 3.0 V (vs. Li/Li+) or more, a usable capacity exceeding 200 mAh/g, and a high energy density; an electrode structure employing the electrode material; and a lithium second battery having the electrode structure.

Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode that contains a lithium composite oxide as an active material. The cut-off voltage of charge is set to 4.25 to 4.5 V. In a region where the positive electrode and the negative electrode face each other, the Wp/Wn ratio R is in the range from 1.3 to 19 where Wp is the weight of the active material contained in the positive electrode per unit area and Wn is the weight of the active material contained in the negative electrode per unit area. This battery is excellent in safety, cycle characteristics, and storage characteristics even when the cut-off voltage of charge in a normal operating condition is set to 4.25 V or more.

Abstract: A cathode active material includes: (a) first oxide including (1) lithium (Li), nickel (Ni) and manganese, (2) a first element MI selected from Group 2 to Group 14 elements, and (3) oxygen; (b) a second oxide including (1) lithium, (2) a second element MII including nickel and cobalt, (3) manganese, (4) a third element including at least one of the elements of Group 2 to Group 14 elements, except for nickel, cobalt and manganese, and (5) oxygen.

Abstract: A non-aqueous electrolyte secondary battery, comprises positive and negative electrode plates, each comprising a current collector and a material mixture layer carried on each face thereof. A total thickness of the positive electrode material mixture layers on both faces of the current collector is 40 ?m to 100 ?m. The positive electrode plate has an electrode area of 520 cm2 to 800 cm2 per battery capacity of 1 Ah. The negative electrode material mixture layer comprises a graphitizable carbon material. A wide-range X-ray diffraction pattern of the graphitizable carbon material has a peak PX (101) attributed to a (101) crystal face at about 2?=44 degrees, and a peak PX (100) attributed to a (100) crystal face at about 2?=42 degrees. A ratio of an intensity IX (101) of PX (101) to an intensity IX (100) of PX(100) satisfies: 0<IX (101)/IX (100)<1.

Abstract: The negative active material for a non-aqueous rechargeable battery includes a main component of lithium vanadium oxide, and at least one selected from the group consisting of Li3VO4, vanadium carbide, and mixtures thereof. The Li3VO4 is included in an amount of 0.5 to 3.0 wt % based on the total weight of the negative active material, and the vanadium carbide is included in amount of 0.5 wt % or less based on the total weight of the negative active material. The negative active material can improve discharge capacity of the non-aqueous rechargeable battery.

Abstract: Disclosed is a method of preparing a positive active material for a rechargeable lithium battery including adding first and second compounds to a solvent to prepare an acidic solution with a pH from 0.

Abstract: A process of manufacturing a positive active material for a lithium secondary battery includes preparing a coating-element-containing organic suspension by adding a coating-element source to an organic solvent, adding water to the suspension to prepare a coating liquid, coating a positive active material with the coating liquid, and drying the coated positive active material.

Abstract: Disclosed is a positive active material for a rechargeable lithium battery, including a lithiated intercalation compound and an additive compound. The additive compound comprises one or more intercalation element-included oxides which have a charging voltage of 4.0 to 4.6V when 5-50% of total intercalation elements of the one or more intercalation element-included oxides are released during charging.

Abstract: An uncycled, preconditioned positive metal-oxide or lithium-metal-oxide electrode for a non-aqueous lithium electrochemical cell, the electrode being preconditioned in an aqueous or a non-aqueous solution containing stabilizing cations and anions that are etched into the electrode surface to form a protective layer. Methods of preconditioning the electrodes are disclosed as are electrochemical cells and batteries containing the electrodes.

Abstract: A cathode contains: a lithium cobalt composite oxide expressed by LixCoaM1bM2cO2, where M1 denotes the first element; M2 indicates the second element; x, a, b, and c are set to values within ranges of 0.9?x?1.1, 0.9?a?1, 0.001?b?0.05, and 0.001?c?0.05; and a+b+c=1; a first sub-component element of at least one kind selected from a group containing Ti, Zr, and Hf, and a second sub-component element of at least one kind selected from a group containing Si, Ge, and Sn. 0.01 mol %?(content of the first sub-component element)?10 mol % as a ratio to cobalt in the lithium cobalt composite oxide. 0.01 mol %?(content of the second sub-component element)?10 mol % as a ratio to cobalt in the lithium cobalt composite oxide.

Abstract: The invention provides a novel polyanion-based electrode active material for use in a secondary or rechargeable electrochemical cell having a first electrode, a second electrode and an electrolyte.

Abstract: An electrochemically active material resulting from substituting a portion of the nickel in a single-phase composite oxide of nickel and lithium of the LiNiO2 type, characterized in that the active material satisfies the formula: Li(M1(1-a-b-c)LiaM2bM3c)O2 in which: 0.02<a?0.25; 0?b<0.30; 0?c<0.30; (a+b+c)<0.50; M3 is at least one element selected from Al, B, and Ga; M2 is at least one element selected from Mg and Zn; and M1=Ni(1-x-y-z)CoxMnyM4z in which M4 is at least one element selected from Fe, Cu, Ti, Zr, V, Ga, and Si; and 0?x<0.70; 0.10?y<0.55; 0?z<0.30; and 0.20<(1-x-y-z); b+c+z>0; and in that said active material, regardless of its state of charge, satisfies the relationship: 0.40<R<0.90, where: R=(1-a-b-c)*[3-[(nU/nMA+dox)/(4-2b-3c)]*(2-b-2c)] in which: nU is the lithium content expressed in moles; nMA is the sum of the contents of Ni, Mn, Co, and M4 expressed in moles; and dox is the overall degree of oxidation of M1.

Abstract: A cathode active material capable of further improving chemical stability, a method of manufacturing the cathode active material, and a battery using the cathode active material are provided. The cathode includes a cathode active material in which a coating layer made of a compound including Li, at least one selected from Ni and Mg, and O is arranged on complex oxide particles represented by Li1+xCo1?yMyO2?z, where M is at least one kind selected from the group consisting of Mg, Al, B, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Mo, Sn, W, Zr, Y, Nb, Ca and Sr, and the values of x, y and z are within a range of ?0.10?x?0.10, 0?y<0.50 and ?0.10?z?0.20, respectively. A surface layer made of an oxide including at least one kind selected from the group consisting of Ti, Si, Mg and Zr is formed on the coating layer.

Abstract: A composite Li1+xMn2?x?yMyO4 cathode material stabilized by treatment with a second transition metal oxide phase that is highly suitable for use in high power and energy density Li-ion cells and batteries. A method for treating a Li1+xMn2?x?yMyO4 cathode material utilizing a dry mixing and firing process.

Abstract: Disclosed is a battery with a light weight and a high energy density. The battery includes a anode 5, having a layer of an anode active material 9 formed on an anode substrate 8, a cathode 6, including a layer of a cathode active material 14 formed on a cathode substrate 13, and a non-aqueous liquid electrolyte 4. The anode substrate 8 includes an anode resin film 11 containing a polymer and an anode metal layer 12 containing an electrically conductive metal. Since the anode resin film 11 reduces the weight of the anode substrate 8 and the anode metal layer 12 imparts electron conductivity to the anode substrate 8, the battery may be reduced in weight without detracting from battery characteristics to increase the energy density.

Abstract: Batteries based on nanoparticles are demonstrated that achieve high energy densities. Vanadium oxide nanoparticles can have several different stoichiometries and corresponding crystal lattices. The nanoparticles preferably have average diameters less than about 500 nm and more preferably less than about 150 nm. Cathodes produced using the vanadium oxide nanoparticles and a binder can be used to construct lithium batteries or lithium ion batteries. The nanoparticles may have energy densities greater than about 900 Wh/kg.

Abstract: Improved batteries described herein generally comprise an electrolyte having lithium ions and a cathode comprising submicron metal vanadium oxide particles. In some embodiments, the battery demonstrate an accessible current capacity of at least about 220 mAh/g when pulsed in groups of four constant energy pulses at a current density of 30 mA/cm2 to deliver 50 Joules per pulse. The four pulses of a pulse train are separated by 15 seconds of rest between each pulse, and there are 6 days between pulse groups, upon discharge down to a pulse discharge voltage of 2 V. In further embodiments, the batteries have an average internal electrical resistance of no more than 0.2 Ohms at a current density of at least about 30 mA/cm2. Furthermore, the batteries can have a current capability of at least about 0.4 amps per cubic centimeter battery volume.

Abstract: The present invention provides a secondary battery which is less expensive, whose safety is extremely high, which is of large capacity as well as good cyclic characteristic, and which uses an aqueous solution for the electrolytic solution. A lithium secondary battery according to the present invention is constituted by including a positive electrode, formed by binding a positive-electrode raw-material mixture including a positive electrode active material, a negative electrode, formed by binding a negative-electrode raw-material mixture including a negative electrode active material, and an electrolytic solution, comprising an aqueous solution in which a lithium salt is dissolved, said positive electrode active material including at least one of a layered structure lithium-manganese composite oxide whose basic composition is LiMnO2 and an olivine structure lithium-iron composite phosphorus oxide whose basic composition is LiFePO4.

Abstract: A lithium metal oxide positive electrode for a non-aqueous lithium cell is disclosed. The cell is prepared in its initial discharged state and has a general formula xLiMO2.(1-x)Li2M?O3 in which 0<x<1, and where M is more than one ion with an average trivalent oxidation state and with at least one ion being Ni, and where M? is one or more ions with an average tetravalent oxidation state. Complete cells or batteries are disclosed with anode, cathode and electrolyte as are batteries of several cells connected in parallel or series or both.