Abstract: A nickel lithium ion battery positive electrode material having a concentration gradient, and a preparation method therefor. The material is a core-shell material having a concentration gradient, the core material is a material having a high content of nickel, and the shell material is a ternary material having a low content of nickel. The method comprises: synthesizing a material precursor having a high content of nickel by means of co-precipitation, co-precipitating a ternary material solution having a low content of nickel outside the material precursor having a high content of nickel, aging, washing, and drying to form a composite precursor in which the low nickel material coats the high nickel material, adding a lithium source, grinding, mixing, calcining, and cooling to prepare a high nickel lithium ion battery positive electrode material.

Abstract: Thermally regenerative ammonia-based battery systems and methods of their use to produce electricity are provided according to aspects described herein in which ammonia is added into an anolyte to charge the battery, producing potential between the electrodes. At the anode, metal corrosion occurs in the ammonia solution to form an amine complex of the corresponding metal, while reduction of the same metal occurs at the cathode. After the discharge of electrical power produced, ammonia is separated from the anolyte which changes the former anolyte to catholyte, and previous anode to cathode by deposition of the metal. When ammonia is added to the former catholyte to make it as anolyte, the previous cathode becomes the anode. This alternating corrosion/deposition cycle allows the metal of the electrodes to be maintained in closed-loop cycles, and waste heat energy is converted to electricity by regeneration of ammonia, such as by distillation.

Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode composite material layer, the positive electrode composite material layer including: a composite particle including a positive electrode active material, a first conductive material and a binder; and a second conductive material arranged on a surface of the composite particle and having a DBP oil absorption number smaller than that of the first conductive material.

Abstract: Provided is a cathode active material that can simultaneously improve the capacity characteristics, output characteristics, and cycling characteristics of a rechargeable battery when used as cathode material for a non-aqueous electrolyte rechargeable battery. After performing nucleation by controlling an aqueous solution for nucleation that includes a metal compound that includes at least a transition metal and an ammonium ion donor so that the pH value becomes 12.0 to 14.0 (nucleation process), nuclei are caused to grow by controlling aqueous solution for particle growth that includes the nuclei so that the pH value is less than in the nucleation process and is 10.5 to 12.0 (particle growth process).

Abstract: The present invention relates to an electrode for a lithium secondary battery, a method for preparing the same, an electrode assembly for a lithium secondary battery comprising the same, and a lithium secondary battery comprising the same, wherein the electrode comprises an electrode active material, an aqueous binder, a compound represented by Formula 1, and a compound represented by Formula 2. Formula 1 and Formula 2 are the same as set forth in the specification. The electrode for a lithium secondary battery improves the physical properties of the aqueous binder in a manner whereby a cross-linking reaction material is combined with the aqueous binder, so that the electrode can improve initial charge/discharge efficiency and the life span of a lithium secondary battery, preferably a lithium sulfur battery, and improve the area capacity of the electrode.

Abstract: An electrode, in particular, a cathode, for an electrochemical energy store, in particular, for a lithium cell, including particles having one first lithiatable active material, which is based on a transition metal oxide, wherein the particles or a base body including the particles is/are provided with at least one functional layer, which is lithium ion-conductive and includes at least one redox-active element. An energy store including such an electrode, and a method for manufacturing such an electrode, are also described.

Abstract: A non-aqueous electrolyte secondary battery having a charge/discharge capacity, and a small irreversible capacity, which is a difference between a doping capacity and a de-doping capacity, and utilizing an active material efficiently, is provided. Such a non-aqueous electrolyte secondary battery can be provided by using a carbonaceous material for a non-aqueous electrolyte secondary battery anode of the present invention, a production method of which includes: (1) impregnating an alkali metal to a carbonaceous material precursor by adding a compound including an elemental alkali metal to obtain an alkali-impregnated carbonaceous precursor; (2) subjecting the alkali-impregnated carbonaceous precursor to heat treatment by: (a) subjecting the alkali-impregnated carbonaceous precursor to main heat treatment in a non-oxidizing gas atmosphere at a temperature from 800° C. to 1500° C.; wherein a true density is from 1.35 to 1.

Abstract: The invention relates to doped nickelate-containing material with the general formula: Aa M1v M2w M3x M4y M5z O2-? wherein A comprises one or more alkali metals selected from sodium, lithium and potassium; M1 is nickel in oxidation state 2+, M2 comprises one or more metals in oxidation state 4+, M3 comprises one or more metals in oxidation state 2+, M4 comprises one or more metals in oxidation state 4+, and M5 comprises one or more metals in oxidation state 3+ wherein 0.4?a<0.9, 0<v<0.5, at least one of w and y is >0, x>0, z?0, 0???0.1, and wherein a, v, w, x, y and z are chosen to maintain electroneutrality.

Abstract: The present invention provides a secondary battery-use active material that allows for an improvement in thermal stability after charge and discharge are repeated. The secondary battery-use active material of the present invention includes a cathode active material that includes (A) a main phase and a sub-phase, (B) the main phase containing a first lithium compound represented by LiaNibMcAldOe (where M is an element such as cobalt, and 0.8<a<1.2, 0.45?b?1, 0?c?1, 0?d?0.2, 0<e?1.98, (c+d)>0, and (b+c+d)?1), and (C) the sub-phase containing a second lithium compound that contains lithium, aluminum, and oxygen as constituent elements.

Abstract: The present invention provides a positive electrode active material prepared using a preparation method including mixing lithium complex metal oxide particles with a nanosol of a ceramic-based ion conductor and heat treating the resultant to form a coating layer including the ceramic-based ion conductor on the lithium complex metal oxide particles, thereby forming a coating layer including a ceramic-based ion conductor to a uniform thickness on a lithium complex metal oxide particle surface, and as a result, capable of minimizing capacity decline and enhancing a lifespan property when used in a secondary battery, a method for preparing the same, and a lithium secondary battery including the same.

Abstract: The present invention relates to a lithium secondary battery, and more specifically, to a lithium secondary battery including a cathode, an anode and a non-aqueous electrolyte solution, where the cathode includes a cathode active material including a lithium-metal oxide which is doped with a transition metal and includes at least one type of metal having a concentration gradient region between a central portion and a surface portion, and thus having a significantly increased charge/discharge capacity and output at a low temperature to exhibit excellent properties in the low-temperature environment.

Abstract: Provided is a nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode, and a nonaqueous electrolytic solution. The positive electrode includes a positive electrode current collector and a positive electrode active material layer that is formed on the positive electrode current collector. The positive electrode active material layer contains a positive electrode active material, an inorganic phosphate compound having ion conductivity, and a conductive material. The volatile component content in the conductive material is at least 0.15 mass % when measured according to JIS K 6221 (1982).

Abstract: Disclosed are a precursor for preparation of a lithium composite transition metal oxide, a method for preparing the same and a lithium composite transition metal oxide obtained from the same. More particularly, the transition metal precursor which has a composition represented by Formula 1 below and is prepared in an aqueous transition metal solution, mixed with a transition metal-containing salt, including an alkaline material, the method for preparing the same and the lithium composite transition metal oxide obtained from the same are disclosed. MnaMb(OH1-x)2-yAy??(1) wherein M is at least one selected form the group consisting of Ni, Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn and Period II transition metals; A is at least one selected form the group consisting of anions of PO4, BO3, CO3, F and NO3, and 0.5?a?1.0; 0?b?0.5; a+b=1; 0<x<1.0; and 0?y?0.02.

Abstract: Process for the fabrication of a solid electrolyte thin film for an all-solid state Li-ion battery comprising steps to: a) Procure a possibly conducting substrate film, possibly coated with an anode or cathode film, b) Deposit an electrolyte thin film by electrophoresis, from a suspension of particles of electrolyte material, on said substrate and/or said previously formed anode or cathode film, c) Dry the film thus obtained, d) Consolidate the electrolyte thin film obtained in the previous step by mechanical compression and/or heat treatment.

Abstract: The present invention provides a positive electrode active material prepared using a preparation method including mixing a precursor of a metal for a positive electrode active material with a nanosol of a ceramic-based ion conductor to adsorb the nanosol of the ceramic-based ion conductor on the precursor surface, and mixing the nanosol of the ceramic-based ion conductor-adsorbed precursor with a lithium raw material, and heat treating the resultant to prepare a positive electrode active material, and thereby having greatly increased structural stability by the lithium complex metal oxide present on the surface as a metal element forming the ceramic-based ion conductor being uniformly doped, and as a result, capable of significantly enhancing capacity, a rate property and a cycle property of a battery, a method for preparing the same, and a lithium secondary battery including the same.

Abstract: An alkaline electrochemical cell, preferably a zinc/air cell which includes a container; a negative electrode, a positive electrode, wherein said negative electrode and said positive electrode are disposed within the container, and an alkaline electrolyte, wherein the negative electrode comprises zinc, a branched chain fluorosurfactant, barium sulfate (and, more specifically, amino- and/or epoxy-functionalized barium sulfate) and nano sized zinc oxide. The negative electrode composition supports high zinc to electrolyte weight ratios.

Abstract: A positive electrode for nonaqueous electrolyte secondary batteries includes a positive electrode current collector and a positive electrode mix layer, formed on the current collector, containing a positive electrode active material. The positive electrode active material mainly contains a lithium transition metal oxide in which the molar ratio of nickel (Ni) to a transition metal component is 20% or more. The positive electrode mix layer contains a plurality of pores and has a first peak of a logarithmic differential pore volume distribution (dV/dlogD) that appears in the range where the pore diameter D is less than 1 ?m and a second peak of the logarithmic differential pore volume distribution (dV/dlogD) that appears in the range where the pore diameter D is 1 ?m or more in a pore distribution determined by mercury intrusion porosimetry. According to this configuration, a nonaqueous electrolyte secondary battery having excellent output characteristics can be provided.

Abstract: A lithium composite metallic oxide expressed by: LiaNibCocMndDeOf (where 0.2?“a”?1.5, “b”+“c”+“d”+“e”=1, 0<“e”<1, “D” is at least one of the following elements: Fe, Cr, Cu, Zn, Ca, Mg, Zr, S, Si, Na, K, Al, Ti, P, Ga, Ge, V, Mo, Nb, W, La, Hf and Rf, and 1.7?“f”?2.1), and including: a high manganese portion, which is made of a metallic oxide including Ni, Co and Mn at least and of which the composition ratio between Ni, Co and Mn is expressed by Ni:Co:Mn=g:h:i (note that “g”+“h”+“i”=1, 0<“g”<1, 0<“h”<“c”, and “d”<“i”<1), in a superficial layer thereof; and a metallic oxidation portion in an outermost superficial layer of the high manganese portion.

Abstract: Disclosed is a lithium secondary battery, including a cathode, an anode and a non-aqueous electrolyte, wherein the cathode includes a cathode active material containing lithium-metal oxide of which at least one of metals has a concentration gradient region between a core part and a surface part thereof, and the non-aqueous electrolyte includes a lithium salt, a polyfunctional nitrile compound and an organic solvent, such that the high-temperature storage and lifespan properties may be improved.

Abstract: A lithium-ion battery having over-discharge protection includes an anode comprising at least an electrochemically active anode material, said anode having an anode irreversible capacity loss during a first charge of the lithium-ion battery; and a cathode comprising at least an electrochemically active cathode material characterized by the formula: xLi2MnO3.(1?x)LiMnaNibCocO2, where 0<x<1 and a+b+c=1, and x, a, b, and c are selected to provide a cathode irreversible capacity loss during a first charge of the lithium-ion battery that is greater than or equal to the anode irreversible capacity loss, and wherein the cathode possesses a voltage step less than about 2 V versus Li.

Abstract: A positive electrode includes first positive electrode active material particles and second positive electrode active material particles. The first positive electrode active material particles include 0.1% by mass or more and 1% by mass or less of lithium carbonate and a first lithium transition metal oxide as a remainder. The first lithium transition metal oxide is represented by LiM1(1-z1)Mnz1O2 (0.05?z1?0.20). The second positive electrode active material particles include 0.01% by mass or more and 0.05% by mass or less of lithium carbonate and a second lithium transition metal oxide as a remainder. The second lithium transition metal oxide is represented by LiM2(1-z2)Mnz2O2 (0.40?z2?0.60). An electrolytic solution includes 1% by mass or more and 5% by mass or less of an overcharging additive and a solvent and a lithium salt as a remainder.

Abstract: Disclose herein are processes for producing a nickel cobalt aluminum composite hydroxide and producing a positive electrode active material for non-aqueous electrolyte secondary batteries. Nucleation is performed by controlling an aqueous solution for nucleation containing a nickel-containing metal compound, cobalt-containing metal compound, ammonium ion supplier, and aluminum source so that the aqueous solution's pH for nucleation is 12.0 to 13.4, and then in a particle growth step, particle growth is performed in an aqueous solution for particle growth obtained by controlling the aqueous solution for nucleation obtained in the nucleation step so that the pH of aqueous solution for nucleation is 10.5 to 12.0. Further, in nucleation step, an aqueous solution containing aluminum and sodium is used as the aluminum source contained in aqueous solution for nucleation, and the mole ratio of sodium to aluminum in aqueous solution containing aluminum and sodium is adjusted to 1.5 to 3.0.

Abstract: Provided is a highly reliable nickel-zinc battery including a separator exhibiting hydroxide ion conductivity and water impermeability. The separator is disposed in a hermetic container to separate a positive-electrode chamber accommodating a positive electrode and a positive-electrode electrolyte from a negative-electrode chamber accommodating a negative electrode and a negative-electrode electrolyte. The positive-electrode chamber has an extra positive-electrode space having a volume that meets a variation in amount of water in association with reaction at the positive electrode during charge and discharge of the battery, and the negative-electrode chamber has an extra negative-electrode space having a volume meeting a variation in amount of water in association with reaction at the negative electrode during charge and discharge of the battery.

Abstract: A composite cathode active material includes: a first metal oxide including a plurality of layered crystalline phases comprising a first layered crystalline phase and a second layered crystalline phase, wherein the first and second layered crystalline phases have a different compositions than each other, and a second metal oxide different from the first metal oxide and including a composite crystalline phase, that is different from the first metal oxide, wherein the second metal oxide is represented by Formula 1, wherein at least a portion of the second metal oxide is disposed on a first layered crystalline phase of the plurality of layered crystalline phases of the first metal oxide, and wherein the first layer crystalline phase is in a space group of R-3m: LixMyOz??Formula 1 wherein, in Formula 1, 0?x?3, 1?y?3, and 2?z?8, and M is at least one selected from a Group 4 element to a Group 13 element.

Abstract: A disorder rock salt composition for use as a cathode active material. The stoichiometry of the lithium, niobium, oxygen, and transition metal components of the disordered rock salt is varied to improved performance in an electrochemical cell while substantially maintaining the disordered rock salt crystallographic structure.

Abstract: The present invention provides a lithium secondary battery comprising a non-aqueous liquid electrolyte comprising lithium bis(fluorosulfonyl)imide (LiFSI) and a fluorinated benzene-based compound as additives, a positive electrode comprising a lithium-nickel-manganese-cobalt-based oxide as a positive electrode active material, a negative electrode, and a separator. With the non-aqueous liquid electrolyte for a lithium secondary battery of the present invention, a solid SEI film is formed on a negative electrode when initially charging a lithium secondary battery comprising the non-aqueous liquid electrolyte, and an output property of the lithium secondary battery is improved, and an output property and stability after high temperature storage are capable of being enhanced as well.

Abstract: An electrolyte for metal-air batteries, which is able to inhibit the self-discharge of metal-air batteries, and a metal-air battery using the electrolyte. The electrolyte for metal-air batteries having an anode containing at least one kind of metal element selected from aluminum and magnesium, may comprise an aqueous solution comprising a self-discharge inhibitor containing at least one kind of ion selected from the group consisting of an H2P2O72? anion and a Ca2+ cation and at least one kind of ion selected from the group consisting of a CH3S? anion, an S2O32? anion and an SCN? anion.

Abstract: A lithium secondary battery including a cathode, an anode and a non-aqueous electrolyte. The cathode includes a cathode active material containing lithium-metal oxide of which at least one of metals has a concentration gradient region between a core part and a surface part thereof. The lithium-metal oxide includes elements M1, M2, and M3. M3 has a concentration gradient region with increased concentration between the core part and the surface part, M1 has a concentration gradient region with decreased concentration between the core part and the surface part, and M2 has a constant concentration from the core part and the surface part. The anode includes graphite having an average lattice distance d002 of 3.356 to 3.365 ?.

Abstract: Provided is a highly reliable nickel-zinc battery including a separator exhibiting hydroxide ion conductivity and water impermeability. The nickel-zinc battery includes a positive electrode containing nickel hydroxide and/or nickel oxyhydroxide; a positive-electrode electrolytic solution in which the positive electrode is immersed, the electrolytic solution containing an alkali metal hydroxide; a negative electrode containing zinc and/or zinc oxide; a negative-electrode electrolytic solution in which the negative electrode is immersed, the electrolytic solution containing an alkali metal hydroxide; a hermetic container accommodating the positive electrode, the positive-electrode electrolytic solution, the negative electrode, and the negative-electrode electrolytic solution; and the separator exhibiting hydroxide ion conductivity and water impermeability and disposed in the hermetic container so as to separate a positive-electrode chamber from a negative-electrode chamber.

Abstract: Relating to a 5 V-class spinel type lithium nickel manganese-containing composite oxide having an operating potential of 4.5 V or more with respect to a Li metal reference potential, the present invention proposes a composite oxide being capable of improving cycle properties while suppressing the amount of gas generation under high temperature environments and of increasing thermodynamical stability of a positive electrode in a fully charged state. Proposed is a spinel type lithium nickel manganese-containing composite oxide represented by a general formula [Li(LiaNiyMn2-a-b-y-z-?TibAlzM?)O4-?] (where 0<a, 0<b, 0.30?y<0.60, 0<z, 0??, 2-a-b-y-z-?<1.7, 3?b/a?8, 0.1<b+z+?, 0<z/b?1, and M represents one or two or more metal elements selected from the group consisting of Mg, Fe, Co, Ba, Cr, W, Mo, Y, Zr, Nb, and Ce).

Abstract: An electrode material includes a lithium active material composition. The lithium active material composition includes lithium and an active anode material. The lithium active material composition is coated with a lithium ion conducting passivating material, such that the electrode material is lithiated and pre-passivated. An electrode and a battery are also disclosed. Methods of making an electrode material, electrode and battery that are lithiated and pre-passivated are also disclosed.

Abstract: A prelithiated and surface-stabilized anode active material for use in a lithium battery, comprising a protected anode active material particle comprising a surface-stabilizing layer embracing a core particle, wherein the surface-stabilizing layer comprises a lithium- or sodium-containing species chemically bonded to the core particle and the lithium- or sodium-containing species is selected from Li2CO3, Li2O, Li2C2O4, LiOH, LiX, ROCO2Li, HCOLi, ROLi, (ROCO2Li)2, (CH2OCO2Li)2, Li2S, LixSOy, Li4B, Na4B, Na2CO3, Na2O, Na2C2O4, NaOH, NaiX, ROCO2Na, HCONa, RONa, (ROCO2Na)2, (CH2OCO2Na)2, Na2S, NaxSOy, or a combination thereof, wherein X=F, Cl, I, or Br, R=a hydrocarbon group, 0<x?1, and 1?y?4; wherein the lithium- or sodium-containing species is preferably derived from an electrochemical decomposition reaction and the core particle is prelithiated to contain an amount of lithium from 1% to 100% of the maximum lithium content that can be included in the core particle of anode active material.

Abstract: A primary battery includes a cathode having a non-stoichiometric metal oxide including transition metals Ni, Mn, Co, or a combination of metal atoms, an alkali metal, and hydrogen; an anode; a separator between the cathode and the anode; and an alkaline electrolyte.

Abstract: This invention provides a powder for a negative electrode of a lithium ion secondary battery, which is a powder that includes a silicon oxide powder containing Li. When a molar ratio between Li, Si and O is taken as y:1:x, the average composition of the powder overall satisfies the relation 0.5<x<1.5 and the relation 0.1<y/x<0.8. The volume median diameter of the powder for a negative electrode is within a range from 0.5 to 30 ?m. When X-ray diffraction measurement of the powder is performed using a Cu K? ray, a relation P2/P1?1.0 and a relation P3/P1?1.0 are satisfied, where P1 represents a height of a peak attributed to Li2SiO3, P2 represents a height of a peak attributed to crystalline Si, and P3 represents a height of a peak attributed to Li4SiO4.

Abstract: A secondary zinc-manganese dioxide secondary cell is disclosed. The cell includes a zinc gel anode, high manganese content cathode in either prismatic or jelly roll form. An aqueous based continuous reel to reel process for formulation and fabrication of the anode and cathode is provided. The cell is contained in a box assembly.

Abstract: Surface modification of LiNi0.4Mn0.4Co0.2O2 (442) compound with certain inert (MxOy) metal oxides viz., Al2O3, Bi2O3, In2O3, Cr2O3, ZrO2, ZnO, MgO has been attempted with a view to improve the structural and cycling stability, especially upon high voltage and high rate cycling conditions. In addition to HF scavenging effect, the protective metal oxide inter-connect layer restricts the number of oxide ion vacancies eliminated during the initial cycling of cathode, resulting in the reduced irreversible capacity loss of the first cycle. Among the surface modified cathodes, Bi2O3 coated LiNi0.4Mn0.4Co0.2O2 cathode exhibits appreciable specific capacity values of 196 (Qdc1) and 175 (Qdc100) mAh g?1 with 89% capacity retention, thus evidencing the superiority of Bi2O3 modifier in improving the electrochemical behavior of pristine LiNi0.4Mn0.4Co0.2O2 cathode. Further, suitability of Bi2O3 coated LiNi0.4Mn0.4Co0.2O2 cathode for high voltage (5.

Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte, and more particularly, the positive electrode includes a positive active material including lithium-metal oxide in which at least one metal has a continuous concentration gradient from the center to the surface, and the negative electrode includes a negative active material including graphite having an average lattice distance (d002) in the range of 3.356 to 3.365 ?, thereby improving storage characteristics at a high temperature and lifetime characteristics.

Abstract: An active material containing a monoclinic ?-type titanium oxide or a monoclinic ?-type titanium complex oxide. A carbonate ion is disposed on at least a part of a surface of the active material. The active material has a peak belonging to a carbonate ion in at least a. region of 1430±30 cm?1, 1500±30 cm?1 and 2350±30 cm ?1 in an infrared diffuse reflection spectrum obtained using a Fourier transform infrared spectrophotometer.

Abstract: A method of producing interlayer distance controlled graphene, an interlayer distance controlled graphene composition, and a supercapacitor are provided. A method of producing an interlayer distance controlled graphene involves dispersing a graphene oxide in a solution by using a surfactant, forming a reduced graphene oxide by adding a reducing agent into the solution containing the dispersed graphene oxide, and adding a pillar material that is activated at its both ends by a N2+ group into the solution containing the reduced graphene oxide to control an interlayer distance of the reduced graphene oxide.

Abstract: A nonaqueous electrolyte secondary battery includes: a wound electrode body that is formed by laminating an elongated sheet-shaped positive electrode current collector foil, an elongated sheet-shaped negative electrode current collector foil, and an elongated sheet-shaped separator to obtain a laminate and winding the obtained laminate; a nonaqueous electrolytic solution; and a case that accommodates the wound electrode body and the nonaqueous electrolytic solution. A solid electrolyte interface film derived from an oxalato borate complex is formed on at least a surface of the negative electrode active material layer.

Abstract: A nickel-hydrogen secondary battery includes an electrode group including a separator, a positive electrode and a negative electrode, the positive electrode includes a positive electrode active material, the positive electrode active material includes a composite particle including a compound of Co and a compound of Ni, and the ratio R represented by A/B satisfies a relationship of R?0.3, when the amount of jumping in the X-ray absorption fine structure spectrum of the Co in 7600 to 7800 eV and the amount of jumping in the X-ray absorption fine structure spectrum of the Ni in 8300 to 8500 eV obtained by measurement according to a conversion electron yield method are defined as A and B, respectively.

Abstract: A lithium metal oxide powder for use as a cathode material in a rechargeable battery, consisting of a core material and a surface layer, the core having a layered crystal structure consisting of the elements Li, a metal M and oxygen, wherein the Li content is stoichiometrically controlled, wherein the metal M has the formula M=Co1-aM?a, with 0?a?0.05, wherein M? is either one or more metals of the group consisting of Al, Ga and B; and the surface layer consisting of a mixture of the elements of the core material and inorganic N-based oxides, wherein N is either one or more metals of the group consisting of Mg, Ti, Fe, Cu, Ca, Ba, Y, Sn, Sb, Na, Zn, Zr and Si.

Abstract: The present invention relates to a secondary battery, specifically, a secondary battery having excellent stability and improved output characteristic and low temperature characteristic by including a cathode active material in which at least one of metals forming the cathode active material has a concentration gradient in an entire region from a central portion up to a surface portion; and a conductive material mixture in which carbon nanotube is mixed with carbon black at an appropriate ratio, the carbon black being a spherical nanoparticle.

Abstract: The present invention concerns a process for the recovery of metals and of heat from spent rechargeable batteries, in particular from spent Li-ion batteries containing relatively low amounts of cobalt. It has in particular been found that such cobalt-depleted Li-ion batteries can be processed on a copper smelter by: feeding a useful charge and slag formers to the smelter; adding heating and reducing agents; whereby at least part of the heating and/or reducing agents is replaced by Li-ion batteries containing one or more of metallic Fe, metallic Al, and carbon. Using spent LFP or LMO batteries as a feed on the Cu smelter, the production rate of Cu blister is increased, while the energy consumption from fossil sources is decreased.

Abstract: Provided is a method for producing a positive electrode for a nonaqueous electrolyte secondary battery having superior electrical conductivity with high productivity. The production method disclosed herein includes the following steps: a first kneading step (S10) for kneading electrically conductive carbon fine particles and a hydrophobic binder that gels when contacted by water, in N-methyl-2-pyrrolidone (NMP); a second kneading step (S20) for adding a positive electrode active material and water to a first kneaded product obtained in the first kneading step followed by additional kneading; and a step (S30) for forming a positive electrode active material layer on the surface of a positive electrode current collector by coating a second kneaded product obtained in the second kneading step on the positive electrode current collector. The first kneaded product contains moisture, and the ratio of the mass of the moisture to the mass of the NMP is 0.

Abstract: A positive electrode active material includes particles composed of a compound oxide; and coating layers composed of a compound oxide formed on at least parts of the surfaces of the particles. The particles have a layered structure and include a first compound oxide mainly composed of lithium and nickel. The coating layers include a second compound oxide mainly composed of lithium and titanium. The ratio by weight of the first compound oxide to the second compound oxide is between 96:4 and 65:35. The positive electrode active material has a mean particle diameter of 5 to 20 ?m.

Abstract: Provided is a non-aqueous electrolyte secondary battery combining high battery performance in normal use and endurance against overcharge. The non-aqueous electrolyte secondary battery comprises a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode comprises a positive electrode active material 16. Positive electrode active material 16 is formed of a particulate lithium composite oxide 16c comprising at least lithium, nickel, cobalt, manganese and tungsten; and a nickel oxide layer 16s formed on the lithium composite oxide surface. With the non-lithium metals in lithium composite oxide 16c being 100% by mole, tungsten accounts for 0.05% by mole or greater, but 2% by mole or less. With lithium composite oxide 16c being 100 parts by mass, the nickel oxide content is 0.01 part by mass or greater, but 2 parts by mass or less.

Abstract: A positive electrode active material of the present invention includes lithium cobalt oxide particles; and a surface treatment layer positioned on a surface of the lithium cobalt oxide particle, and the lithium cobalt oxide particle includes lithium deficient lithium cobalt oxide having a Li/Co molar ratio of less than 1, included in an Fd-3m space group, and having a cubic-type crystal structure, in a surface side of the particle. The surface treatment layer includes at least one element selected from the group consisting of transition metals and elements in group 13.

Abstract: A positive electrode for alkaline storage batteries that enables to improve the active material utilization rate, while suppressing the self-discharge. The positive electrode for alkaline storage batteries includes a support having conductivity, and a positive electrode active material adhering to the support. The positive electrode active material includes particles of a nickel oxide. The particles of the nickel oxide include a first particle group having a particle diameter of 20 ?m or more, and a second particle group having a particle diameter of less than 20 ?m. The first particle group includes a first component with cracks, and a second component without cracks. The proportion of the first particle group in the particles of the nickel oxide is 15 vol % or more, and the proportion by number of the first component in the first particle group is 15% or more.

Abstract: The present invention provides a positive electrode active material for lithium ion batteries having excellent battery property. The positive electrode active material for lithium ion batteries is represented by composition formula: LixNi1?yMyO2+?, wherein M is Co as an essential component and at least one species selected from a group consisting of Sc, Ti, V, Cr, Mn, Fe, Cu, Zn, Ga, Ge, Al, Bi, Sn, Mg, Ca, B and Zr, 0.9?x?1.2, 0<y?0.7, ?>0.05, and an average particle size (D50) is 5 ?m to 15 ?m.