Abstract: Disclosed is a negative active material for a lithium rechargeable battery comprising a core having a carbon source with a surface-treatment layer formed on the surface of the core. The surface-treatment layer has at least one amorphous, semi crystalline, or crystalline coating element compound selected from the group consisting of coating-element-included hydroxides, coating-element-included oxyhydroxides, coating-element-included-oxycarbonates, and coating-element-included hydroxidecarbonates. Also disclosed is a method of preparing a negative active material for a lithium rechargeable battery comprising coating a carbon source with a coating liquid, and drying the carbon source. The coating liquid comprises a solute of a coating element source and a solvent of a mixture of an organic solvent and water.

Abstract: A water-activated primary battery using magnesium or alloys thereof as the anode and a cathode of various material having a redox potential allowing a charge transfer reaction is described, said battery comprising one or more electrochemical cells enclosed in a casing (1), characterized in that it contains a pH buffer system formed by at least one acid having a ionization constant Ka≦0.

Abstract: An active material for a battery has a surface-treatment layer including a compound of the formula (1):

Abstract: The invention provides novel active material represented by the general formula LiaMI1−yMIIyPO4, wherein MI is selected from the group consisting of Fe, Ni, Mn, V, Sn, Ti, Cr, and mixtures thereof; MII is selected from the group consisting of Zn, Cd, and a mixture thereof; a is about 1; and 0<y<1, which, upon electrochemical interaction, releases lithium ions, and is capable of reversibly cycling lithium ions. The invention provides a rechargeable lithium battery which comprises an electrode formed from the novel active material, wherein MI is selected from the group consisting of Fe, Co, Ni, Mn, Cu, V, Sn, Ti, Cr, and mixtures thereof. Methods for making the novel active material and methods for using such a material in electrochemical cells are also provided.

Abstract: An object of the invention is to provide a non-aqueous electrolyte secondary battery having a plateau in voltage in the 4-V region well comparable to that of lithium cobalt oxide, a high energy density, and cell characteristics such as safety, cycle properties, and high temperature storage properties.

Abstract: An object of the present invention is to provide a novel complex oxide applicable as an oxide-ion conductor. The complex oxide according to the present invention has a basic composition of (Sm1-xAX)(Al1-yBy)O3. In the formula, “A” represents one or more element selected from the group consisting of barium, strontium and calcium; “B” represents an element selected from the group consisting of magnesium, iron and cobalt; x=0.10 to 0.30; and y=0 to 0.30.

Abstract: The present invention achieves an increased capacity and prolonged life of nonaqueous electrolyte batteries of the type in which light metals, such as magnesium, calcium or aluminum, are used in the negative electrode. The present invention also provides a thermally stable nonaqueous electrolytic solution for use with such batteries. The nonaqueous electrolyte battery in accordance with the present invention includes a positive electrode; a negative electrode containing at least one element selected from the group consisting of aluminum, calcium and magnesium; and a nonaqueous electrolytic solution composed of a mixed solvent of an organic solvent and an alkyl sulfone having a structure represented by R1R2SO2, where R1 and R2 are each independently an alkyl group, and at least one type of salt selected from the group consisting of aluminum salt, calcium salt and magnesium salt.

Abstract: An active material for a battery has a surface treatment layer that includes a conductive agent and at least one coating-element-containing compound selected from the group consisting of a coating-element-containing hydroxide, a coating-element-containing oxyhydroxide, a coating-element-containing oxycarbonate, a coating-element-containing hydroxycarbonate, and a mixture thereof.

Abstract: A method of improving the performance of magnesium containing electrodes used in metal/air batteries (fuel cells), comprising the addition of one or more additives to the electrolyte or electrode surface The additives are selected from any of the following groups; dithioburet, tin, and tin plus a quaternary ammonium salt.

Abstract: The present invention provides a positive electrode active material containing a lithium-containing composite metal oxide having a composition represented by formula (1) given below:

Abstract: A positive electrode active material for a non-aqueous electrolyte battery comprising a lithium-containing transition metal oxide, produced with the use of a dry precursor obtained by: introducing an alkaline solution together with an aqueous solution containing two or more of transition metal salts or two kinds or more of aqueous solutions of different transition metal salts into a reaction vessel to obtain a hydroxide or an oxide as a precursor through coprecipitation with a reductant being coexistent or an inert gas being supplied; and drying the precursor at 300 to 500° C. to obtain a dry precursor.

Abstract: Disclosed is a nonaqueous electrolyte battery, comprising a positive electrode containing a positive electrode active material, a negative electrode containing a sulfide containing Fe, and a nonaqueous electrolyte including a nonaqueous solvent and a solute dissolved in the nonaqueous solvent, the nonaqueous solvent containing a first solvent containing a cyclic carbonate and a second solvent containing a chain carbonate, wherein the content of the first solvent in the nonaqueous solvent falls within a range of between 4.8 and 29% by volume and the content of the second solvent in the nonaqueous solvent falls within a range of between 71 and 95.2% by volume.

Abstract: The present invention relates to cobalt oxide particles useful as a precursor of a cathode active material for a non-aqueous electrolyte secondary cell which is capable of showing a stable crystal structure by insertion reaction therein, and producing a non-aqueous electrolyte secondary cell having a high safety and especially a high heat stability, a process for producing the cobalt oxide particles, a cathode active material for a non-aqueous electrolyte secondary cell using the cobalt oxide particles, a process for producing the cathode active material, and a non-aqueous electrolyte secondary cell using the cathode active material.

Abstract: A positive active material for a rechargeable lithium battery is provided. The active material includes a manganese-based compound selected from the group consisting of the compounds represented by the formulas 1 to 6. The surface of the active material is coated with metal oxide. LixMn1−xM′xA2  (1) LixMn1−xM′xO2−zAz  (2) LixMn1−x−yM′xM″yA2  (3) LixMn2−xM′xO4  (4) LixMn2−xM′xO4−zAz  (5) LixMn2−x−yM′xM″yA4  (6) (where, 0.01≦x≦0.1, 0.01≦y≦0.1, 0.01≦z≦0.5, M′ is at least one semi-metal selected from Si, B, Ti, Ga, Ge or Al, M″ is at least one transition metal or lanthanide metal selected from Al, Cr, Co, Mg, La, Ce, Sr or V, and A is selected from O, F, S or P.

Abstract: A cathode material for use in a lithium secondary battery of excellent thermal stability contributing to the improvement of safety of the battery and having large discharging capacity, as well as a method of manufacturing the cathode material for use in the lithium secondary battery, based on the improved method for measuring the thermal stability of the cathode material, the cathode material comprising a compound represented by the chemical formula: LixNiyCozMmO2 in which the material is powdery and the BET specific surface area is 0.8 m2/g or less, M in the chemical formula represents one or more of element selected from Ba, Sr and B, and x, y, z and m are, respectively, 0.9≦x≦1.1, 0.5≦y≦0.95, 0.05≦z≦0.5 and 0.0005≦m≦0.02.

Abstract: A power generating method of generating power supply by: guiding seawater through a reaction tank having negative electrodes made of magnesium or aluminum alloy and a positive electrode made of silver chloride, cuasing the negative electrodes to produce the oxidizing reaction of Mg→Mg+2+2e− and the positive electrode to produce the reduction reaction of 2AgCl+2e−→2Ag+2Cl−.

Abstract: Electrode active materials comprising lithium or other alkali metals, a transition metal, a phosphate or similar moiety, and a halogen or hydroxyl moiety.

Abstract: A negative electrode material and a battery which have an excellent cycle characteristic as well as a high capacity are provided. A positive electrode housed in an exterior can and a negative electrode housed in an exterior cup are laminated with a separator therebetween. An electrolytic solution of lithium salt dissolved in a solvent is poured into the inside of both the exterior can and the exterior cup. The negative electrode contains Mg2-xMIIxMI. MI expresses a first element such as Si, Sn, Ge, Pb, or the like. MII expresses a second element which is a metallic element, preferably Mn, Cu, Zn, or the like except both Mg and the first element. X is preferably in the range of 0.1≦x≦1.9. Substituting part of Mg by the second element MII can produce the distortion of the crystal structure, ease distortion accompanying the occluding/releasing lithium, and improve the charge and discharge efficiency and the cycle characteristic.

Abstract: There is provided a positive electrode active material for a non-aqueous electrolyte secondary battery, comprising a composite oxide represented by the general formula (1): (Li1−xMx)a(Co1−yMy)bOc where lithium and cobalt are partly replaced with element M in the crystal structure of LiCoOc, wherein element M is at least one selected from the group consisting of Al, Cu, Zn, Mg, Ca, Ba and Sr, and 0.02≦x+y≦0.15, 0.90≦a/b≦1.10, and 1.8≦c≦2.2 are satisfied.

Abstract: A rechargeable battery having an anode comprising a powdery composite material, said powdery composite material comprising a plurality of powdery composites having a structure comprising a core whose surface is covered by a coat layer, said core comprising an alloy particle of an alloy capable of reversibly storing and releasing hydrogen as a main component, said alloy containing at least one kind of a metal element selected from the group consisting of Zr, Ti and V as a main constituent element, and said coat layer comprising a hydrous oxide (including a hydroxide) of a metal element having an affinity with oxygen which is greater than that of any of said metal elements as the main constituent element of said alloy.

Abstract: In an electrolyte of a non-aqueous electrolyte secondary battery using a cyclic carboxylic-acid ester exerting high conductivity under a low temperature condition, for suppressing reductive decomposition of the cyclic carboxylic acid ester, a cyclic carbonic acid ester having at least one carbon-carbon unsaturated bond is contained, and for suppressing excessive polymerization reaction of the cyclic carbonic acid ester having at least one carbon-carbon unsaturated bond, a cyclic carbonic acid ester having no carbon-carbon unsaturated bond is further contained.

Abstract: A crystal which can be employed as the active material of a lithium-based battery has an empirical formula of Lix1A2Ni1−y−zCoyBzOa, wherein “x1” is greater than about 0.1 and equal to or less than about 1.3, “x2,” “y” and “z” each is greater than about 0.0 and equal to or less than about 0.2, “a” is greater than about 1.5 and less than about 2.1, “A” is at least one element selected from the group consisting of barium, magnesium, calcium and strontium and “B” is at least one element selected from the group consisting of boron, aluminum, gallium, manganese, titanium, vanadium and zirconium.

Abstract: One object of the invention is to provide an electrode composition that prevents capacity decreases that occurs when BF-based salts are used and a lithium secondary battery, and another object is to provide a lithium secondary battery having high discharge capacity even at low temperature with no risk of swelling even during storage. These objects are attained by the provision of an electrode composition containing a lithium fluoroborate-based salt in an electrolyte, wherein a poly(vinylidene fluoride) homopolymer is contained at least as a binder and a lactone is contained as an electrolyte solvent while the poly(vinylidene fluoride) homopolymer has been obtained by a emulsion polymerization process, and a lithium secondary battery using the same.

Abstract: A composition suitable for use as a cathode material of a lithium battery includes a core material having an empirical formula LixM′zNi1−yM″yO2. “x” is equal to or greater than about 0.1 and equal to or less than about 1.3. “y” is greater than about 0.0 and equal to or less than about 0.5. “z” is greater than about 0.0 and equal to or less than about 0.2. M′ is at least one member of the group consisting of sodium, potassium, nickel, calcium, magnesium and strontium. M″ is at least one member of the group consisting of cobalt, iron, manganese, chromium, vanadium, titanium, magnesium, silicon, boron, aluminum and gallium. A coating on the core has a greater ratio of cobalt to nickel than the core. The coating and, optionally, the core can be a material having an empirical formula Lix1Ax2Ni1−y1−z1Coy1Bz1Oa. “x1” is greater than about 0.1 and equal to or less than about 1.3.

Abstract: An electrochemical battery includes at least two electrically interconnected electrochemical cells. Each electrochemical cell has an anode including carbon, and a cathode including a modified lithium metal oxide including at least one additional element selected from the group consisting of nickel, aluminum, magnesium, titanium, and combinations thereof. A Schottky diode is connected between the anode and the cathode. The battery is balanced by fully discharging it to a fully discharged state, and then operated in cycles of charging and discharging.

Abstract: A nonaqueous electrolyte secondary battery according to the invention comprises a positive electrode containing a positive electrode active material including lithium containing composite oxide having a layer crystal structure represented by a general formula of LixMnaCobMcO2(0.9≦X≦1.1, 0.45≦a≦0.55, 0.45≦b≦0.55, 0<c≦0.05 and 0.9<a+b+c≦1.1 are set and M is at least one kind selected from Al, Mg, Sn, Ti and Zr), a negative electrode containing a negative electrode active material capable of intercalating and deintercalating lithium ion, a separator for separating the positive electrode from the negative electrode, and a nonacqueous electrolyte.

Abstract: A method for producing electrode sheets for electrochemical elements which contain at least one lithium-intercalating electrode which is composed of a mixture of at least two copolymerized fluorized polymers in whose polymer matrix electrochemically active materials which are insoluble in the polymer are finely dispersed, the fluorized polymers are, having being dissolved as a solvent, mixed with electrochemically active materials, the resulting pasty substance is extruded to form a sheet and then laminated with a polyolefin separator, which is provided with a mixture of the two polymers, PVDF-HFP copolymers in each case being used as the polymer, and the proportion of HFP being less than about 8 percent by weight.

Abstract: A non-aqueous secondary battery comprising a negative electrode made of an active negative electrode material capable of intercalating/deintercalating lithium ion, a positive electrode made of spinnel type lithium manganese oxide as a main active positive electrode material and an electrolyte containing a non-aqueous solvent is characterized in that said positive electrode comprises lithium cobalt oxide in admixture with spinnel type lithium manganese oxide having crystal lattices partially substituted by magnesium or aluminum and said non-aqueous solvent comprises vinylene carbonate incorporated therein.

Abstract: Disclosed is a negative active material for a lithium secondary battery. The negative active material includes graphitized coke having a graphitization catalyst element and non-flat artificial graphite. The negative active material for a lithium secondary battery has good electrolyte-immersibility due to the gap between the graphite particles from graphitized coke having a graphitization catalyst element, and non-flat artificial graphite. Therefore, the present invention may provide a lithium secondary battery which has good high-rate capacity and initial efficiency.

Abstract: A lithium secondary battery having improved load characteristics such as high rate discharge properties is obtained by using a mixed cathode active material comprising a mixture of lithium-containing manganese oxide having a spinel type crystal structure and lithium-containing cobalt oxide, wherein the cathode collector retains mixed cathode active material in such a manner that the mixing ratio of lithium cobaltate X thereof should fall in a range of 0.1≦X≦0.9, that the bulk density Y (g/cm3) of the cathode mixed agent should be confined in a range satisfying the relation of 0.5X+2.7≦Y≦0.6X+3.3, and that the mean particle diameter of spinel type lithium manganate should be greater than the mean particle diameter of lithium cobaltate.

Abstract: The method for producing a positive electrode active material for an alkaline storage battery is disclosed. The method includes a first oxidation treatment of a raw material powder comprising a nickel hydroxide solid solution and cobalt hydroxide to oxidize the cobalt hydroxide to a cobalt oxyhydroxide; and a second oxidation treatment of the powder obtained in the first oxidation treatment to oxidize the nickel hydroxide solid solution to a nickel oxyhydroxide solid solution.

Abstract: A non-aqueous electrolyte cell having high discharge capacity, an improved capacity upkeep ratio and optimum cyclic characteristics. The non-aqueous electrolyte cell has a cell device including a strip-shaped cathode material and a strip-shaped anode material, layered and together via a separator and coiled a plural number of times, a non-aqueous electrolyte solution, and a cell can for accommodating cell device and the non-aqueous electrolyte solution. The cathode employs a cathode active material containing a compound of the olivinic structure represented by the general formula LixFe1-yMyPO4, where M is at least one selected from the group consisting of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb, with 0.05≦x≦1.2 and 0≦y≦0.8, with the compound being used either singly or in combination with other materials. The ratio of an inner diameter d to an outer diameter D of cell device is selected so that 0.05<d/D<0.5.

Abstract: A lithium secondary battery using lithium manganese oxide as a positive active material and having excellent charge and discharge cycle properties.

Abstract: An electrical cell or battery (10, 44, 62) is provided which employs an elemental metal composition including quantities of elemental magnesium and elemental iron, together with electrodes (36, 38, 52, 60, 80, 82) operatively coupled with the metal composition. The current-generating composition also includes a minor amount of an alkali metal salt such as sodium chloride, and variable amounts of water. The metal fraction of the composition preferably includes from about 30-90% by weight elemental magnesium and from about 10-70% by weight elemental iron.

Abstract: An electrode for an electrochemical cell is provided. The electrode comprises a plurality of fibers comprised of an electrically conductive material configured to conduct electrons to an electrolyte of the electrochemical cell.

Abstract: The present invention provides a positive electrode active material comprising: a positive electrode active material body having a composition of Li1+xMn2−x−yMyO4 wherein M denotes at least one element selected from elements other than Mn, alkaline metal elements and alkaline earth metal elements, 0≦x≦0.2 and 0≦y≦0.3; and a cover layer formed on a surface of the positive electrode active material body, the cover layer being composed of a metal oxide containing at least Mn and Li; wherein the number of metal atoms other than Mn and Li, which constitute the cover layer, is 0.01-20 times the number of Mn atoms when the cover layer is subjected to X-ray photoelectric spectroscopy (XPS). It is also preferable that the cover layer is composed of a metal oxide composited with Li, and the cover layer has a normal spinel structure.

Abstract: Disclosed is an active material for constituting a nickel electrode for alkaline storage batteries which has a high utilization at high ambient temperatures and therefore realizes a battery of higher energy density and a longer cycle life. The nickel electrode active material comprises a nickel hydroxide powder prepared from nickel sulfate and contains SO42− at 0.4 wt % or less in the crystal of the powder. The nickel hydroxide is preferably solid solution nickel hydroxide incorporating therein at least one element selected from the group consisting of cobalt, cadmium, zinc and magnesium.

Abstract: A method for producing a cathode active material which produces a spinel type lithium manganese oxide expressed by a general formula: Li1+xMn2−x−yMeyPO4, as the cathode active material, (here, x is expressed by a relation of 0≦x≦0.15 and y is expressed by a relation of 0<y<0.3, and Me is at least one kind of element selected from between Co, Ni, Fe, Cr, Mg and Al). The method comprises a mixing step of mixing raw materials of the spinel type lithium manganese oxide to obtain a precursor; and a sintering step of sintering the precursor obtained in the mixing step to obtain the spinel type lithium manganese oxide. The sintering temperature in the sintering step is located within a range of 800° C. or higher and 900° C. or lower. Accordingly. even when manganese which is inexpensive and abundant in resources is employed as a main material, an excellent cathode performance can be maintained under the environment.

Abstract: The battery of this invention includes a positive electrode including a gelled polymeric electrolyte (A) and using spinel type lithium manganese oxide as an active material; a negative electrode; a gelled polymeric electrolyte (B) in the shape of a film or sheet also serving as a separator, and both the gelled polymeric electrolyte (A) and the gelled polymeric electrolyte (B) are made from a polymer of poly(alkylene oxide) series impregnated with a liquid electrolyte. Since the battery includes the positive electrode using the specific gelled polymeric electrolyte (A), a contact area between the positive electrode active material and the gelled polymeric electrolyte is large, so as to attain large initial discharge capacity (at high rate discharge in particular).

Abstract: Positive electrode-active materials for use in lithium-ion and lithium-ion polymer batteries contain quaternary composite oxides of manganese, nickel, cobalt and aluminum where one of the four is present at levels of over 70 mol percent. The composite oxides can be lithiated to form positive electrode-active materials that are stable over at least ten charge/discharge cycles at voltage levels over 4.8 volts, and have capacities of over 200 mAh/g. Methods for producing the materials and electrochemical cells and batteries that include the materials are also provided.

Abstract: A non-aqueous electrolyte secondary cell containing a compound of an olivinic structure as a cathode active material is to be improved in load characteristics and cell capacity. To this end, there is provided a non-aqueous electrolyte secondary cell including a cathode having a layer of a cathode active material containing a compound represented by the general formula LixFe1-yMyPO4, where M is at least one selected from the group consisting of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb, with 0.05≦x≦1.2 and 0≦y≦0.8, an anode having a layer of a cathode active material containing the anode active material and a non-aqueous electrolyte, wherein the layer of the cathode active material has a film thickness in a range from 25 to 110 &mgr;m. If a layer of a cathode active material is provided on each surface of a cathode current collector, the sum of the film thicknesses of the layers of the cathode active material ranges between 50 and 220 &mgr;m.

Abstract: A non-aqueous electrolyte battery capable of quickly diffusing magnesium ions and improving cycle operation resistance, incorporating a positive electrode containing LixMO2 (where M is an element containing at least Ni or Co) as a positive-electrode active material thereof; a negative electrode disposed opposite to the positive electrode and containing a negative-electrode active material which permits doping/dedoping magnesium ions: and a non-aqueous electrolyte disposed between the positive electrode and the negative electrode and containing non-aqueous solvent and an electrolyte constituted by magnesium salt, wherein the value of x of LixMO2 satisfies a range 0.1≦x≦0.5.

Abstract: A cathode active material for a non-aqueous electrolyte secondary cell of the present invention, has a c-axis length of lattice constant of 14.080 to 14.160 Å, an average particle size of 0.1 to 5.

Abstract: Disclosed is a negative electrode active material offering a long life non-aqueous electrolyte secondary battery with high energy density that shows excellent cycle life characteristics. The negative electrode active material comprises a compound represented by the formula DSnO3 wherein D represents at least one selected from the group consisting of alkaline earth metals.

Abstract: An Mg-based alloy negative electrode active material used as a hydrogen storage alloy electrode of an alkali secondary battery includes an amorphous alloy containing Ni, Mg, Zn, and Zr and capable of electrochemically occluding and releasing hydrogen.

Abstract: A nickel hydroxide particle having a first active nickel hydroxide material and a second active nickel hydroxide material disposed about the first material, wherein the second active nickel hydroxide material has a mass at least 10% of the total particle mass. In a preferred embodiment of the invention the first active material and the second active material have a compositional difference of 1 to 25.

Abstract: A method for producing a negative electrode material for a non-aqueous electrolyte secondary battery is disclosed: which includes a step of applying a shearing force to an intermetallic compound under the presence of nitrogen. The intermetallic compound contains element(A) which reacts with nitrogen and forms a nitride, but does not react with lithium, and element(B) which does not react with nitrogen, but reacts with lithium, thereby forming a mixture containing a nitride of element(A) and a substance of element(B).

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: The present invention provides a non-aqueous electrolyte secondary cell including: a lithium-nickel composite oxide as a cathode active material and a material having a specific surface in the range from 0.05 m2/g to 2 m2/g as an anode active material. When A is assumed to be the weight of the lithium-nickel composite oxide and B is assumed to be the weight of the cathode active material other than the lithium-nickel composite oxide, the mixture ratio R expressed A/(A+B) is in the range from 0.2 to 1. This combination of the cathode active material and the anode active material enables to obtain an improved anti-over discharge characteristic even when an anode current collector contains Cu.

Abstract: A positive active material for a rechargeable lithium battery is provided. The positive active material includes a core having a lithiated compound and at least two surface-treatment layers on the core, and each of the two surface-treatment layers includes at least one coating element. Alternatively, the positive active material includes at least one surface-treatment layer on the core, wherein the surface treatment at least comprises at least two coating element-included oxides.