Abstract: The present disclosure relates to a positive electrode active material precursor for a lithium secondary battery, a positive electrode active material manufactured by using thereof, and a lithium secondary battery comprising the same. More specifically, it relates to a positive electrode active material precursor for a lithium secondary battery as a secondary particle comprising transition metals, and formed by gathering of a plurality of primary particles having different a-axis direction length to c-axis direction length ratio, wherein the a-axis direction length to c-axis direction length ratio of the primary particle making up the secondary particle is increased from the center to the surface of the secondary particle; a positive electrode active material; and a lithium secondary battery comprising the same.

Abstract: A rechargeable battery includes an electrode assembly, a case accommodating the electrode assembly, a cap plate coupled to the case, an electrode terminal within a terminal hole of the cap plate, and a lead tab connecting the electrode assembly to the electrode terminal, wherein the electrode terminal includes a plate terminal located outside of the cap plate and having a through-hole corresponding to the terminal hole, a sub-terminal extending into the through-hole and coupled to the plate terminal, and a rivet terminal penetrating the terminal hole, the rivet terminal being connected to the lead tab and being compression-molded to the sub-terminal.

Abstract: Provided is a lithium ion secondary battery which has a low internal resistance in a low-SOC region and a sufficiently large amount of gas generated during overcharge. The lithium ion secondary battery disclosed herein includes an electrode body having a positive electrode and a negative electrode, and a nonaqueous electrolytic solution. The lithium ion secondary battery further includes a pressure-type safety mechanism. The nonaqueous electrolytic solution includes a gas generating agent. The positive electrode has a positive electrode active material layer including a positive electrode active material. The positive electrode active material includes a lithium transition metal composite oxide represented by LiNiaCobMncO2 wherein a, b and c satisfy the following conditions: 0.35?a?0.45, 0.15?b?0.25, 0.35?c?0.45, and a+b+c=1, and a lithium transition metal composite oxide represented by LiNixCoyMnzO2 wherein x, y and z satisfy the following conditions: 0.35?x?0.45, 0.45?y?0.55, 0.05?z?0.

Abstract: A nonaqueous electrolyte secondary battery of the invention includes a positive electrode, a negative electrode and a nonaqueous electrolyte, the positive electrode including lithium transition metal oxide particles as a positive electrode active material, the lithium transition metal oxide particles containing nickel as a main transition metal component and being such that a first compound containing at least one element Ma selected from the group consisting of Group IV elements and Group V elements is sintered to a portion of the surface of the lithium transition metal oxide particles, the first compound having a composition different from that of the lithium transition metal oxide particles, the positive electrode further including a second compound containing at least one element Mb selected from the group consisting of Group VI elements, the second compound having a composition different from that of the lithium transition metal oxide particles.

Abstract: Disclosed are a positive active material for a rechargeable lithium battery including a compound represented LixCo1?yTiyO2, wherein 1<x?1.1 and 0.02?y?0.05; a method of preparing the same; and a rechargeable lithium battery including the same.

Abstract: The present application discloses a thin film transistor, a display substrate and display panel having the same, and a fabricating method thereof. The thin film transistor includes a base substrate; an active layer on the base substrate having a channel region, a first electrode contact region, and a second electrode contact region; and a first electrode on a side of the first electrode contact region distal to the base substrate; and a second electrode on a side of the second electrode contact region distal to the base substrate; the first electrode and the second electrode being made of an amorphous carbon material.

Abstract: Provided are a cathode material for lithium ion secondary battery having excellent rate characteristics and cycle characteristics while a cathode active substance has high density, and a lithium ion secondary battery cathode and a lithium ion secondary battery that use the above cathode material. The cathode material for lithium ion secondary battery (1), represented by Li1+xM11?x?yM2yO2 [where ?0.1?x?0.3, 0?y?0.1; M1 is Ni, Co, Mn; and M2 is Mg, Al, Ti, Zr, Mo, Nb, Fe, B], is an agglomerate including secondary particles (50, 60) both formed via aggregation of lithium metal composite oxide primary particles (10) having a layered structure. A mean porosity of the secondary particles having a particle size of more than 10 ?m and equal to 50 ?m or less is higher than that of the secondary particles having a particle size of 0.5 ?m to 10 ?m.

Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery, including primary particles of a lithium nickel composite oxide represented by the formula: LibNi1-x-yCoxMyO2 wherein M represents at least one element selected from Mg, Al, Ca, Ti, V, Cr, Mn, Nb, Zr and Mo; b represents a number satisfying 0.95?b?1.03; and x represents a number satisfying 0<x?0.15 and y represents a number satisfying 0<y?0.07, wherein the sum total of x and y is 0.16 or smaller, i.e., x+y?0.16) and secondary particles that are aggregates of the primary particles, wherein microparticles containing W and Li are present on the surface of each of the primary particles, and the length of axis-c of the lithium nickel composite oxide is 14.183 angstroms or more as determined by a Rietveld analysis of X-ray diffraction data on the oxide.

Abstract: The present invention provides a positive active material for use in a secondary lithium battery, a method for preparing the positive active material and a secondary lithium battery containing the positive active material. The positive active material includes a core of lithium transition metal oxide represented by Formula LixMyN1-yO2-?A? and a coating layer of lithium transition metal silicate represented by Formula x?Li2O.y?N?Oa.SiO2-?B?which in-situ formed on the core, wherein 0.8?x?1.3, 0.6?y?1.0, 0.01?x??2.1, 0.2?y??1.5, 0.1?a?3.0, 0???0.2, 0???0.4, 0???0.5, 0???0.5. The positive active material according to the present invention has high capacity, desirable cycling performance and safety performance, as well as desirable thermal stability.

Abstract: A positive electrode active material for a nonaqueous electrolyte secondary battery contains, as a main component, a lithium composite oxide in which a ratio of Ni relative to a total number of moles of metal elements other than Li is greater than 30 mol %. The lithium composite oxide is a secondary particle being aggregation of primary particles having an average particle diameter of 3 ?m or more and 20 ?m or less, and having a compression rupture strength of 100 MPa or more and less than 200 MPa. The lithium composite oxide contains at least one element selected from Ba, Ca, and Sr.

Abstract: A method is provided in which a lithium titanate precursor structure is subjected to element selective sputtering to form a lithium titanate structure including a lithium titanate core and a conformal layer on the lithium titanate core, wherein the conformal layer includes titanium oxide. A method of preparing an electrode for a lithium ion battery, wherein the electrode includes lithium titanate structures, is also provided.

Abstract: A positive electrode active material for use in nonaqueous electrolyte secondary batteries. The active material is composed of particles each formed by the gathering of grains that comprises at least one metal element selected from the group consisting of Ta and Nb. One of the particles has a compression fracture strength of 500 MPa or more. The grain diameter in the (110) vector direction of the particles is 100 nm to 300 nm.

Abstract: A Poly(1-pyrenemethyl methacrylate-co-dopamine methacrylamide) PPyDMA polymer binder has been designed and fabricated, and has demonstrated an excellent performance for silicon (Si), graphite and a metal alloy anode materials. The PPyDMA polymer binder demonstrates the great potential of a catechol moiety for use in a lithium-ion battery.

Abstract: Surface modified lithium-containing composite oxide particles include base material particles of lithium-containing composite oxide, zirconium hydroxide or zirconium oxide, and at least one lithium salt selected from the group consisting of Li2ZrF6, Li2TiF6, Li3PO4, Li2SO4 and Li2SO4.H2O. The zirconium hydroxide or zirconium oxide, and the at least one lithium salt are attached to a surface of the base material particle. The lithium-containing composite oxide is represented by the formula: LipNxMyOzFa. N is at least one element selected from the group consisting of Co, Mn and Ni; M is at least one element selected from the group consisting of Al, elements of group 2, and transition metal elements other than N; 0.9<p<1.1; 0.85<x<1.0; 0<y<0.15; 1.9<z<2.1; x+y=1; and 0<a<0.05.

Abstract: A negative electrode active material for a non-aqueous electrolyte secondary battery, wherein the negative electrode active material is represented by an elemental composition formula of Met1-Si—O—C—H (wherein Met1 represents one alkali metal element or a mixture of alkali metal elements), including: a silicate salt made of a silicon-based inorganic compound and the alkali metal, and fine particles composed of silicon, silicon alloy, or silicon oxide being dispersed in the silicate salt; and a negative electrode active material for a non-aqueous electrolyte secondary battery, wherein the negative electrode active material is represented by an elemental composition formula of Met2-Si—O—C—H (wherein Met2 represents one alkaline earth metal element or a mixture of alkaline earth metal elements), including: a silicate salt made of a silicon-based inorganic compound and the alkaline earth metal.

Abstract: The present invention provides a non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode having a negative active material, and a non-aqueous electrolyte, characterized in that the negative active material contains composite particle (C), which has silicon-containing particle (A) and electronic conductive additive (B), the silicon-containing particle (A) has a content of carbon, and when measured at a temperature rising rate of 10±2° C./min by thermogravimetry, said composite particle (C) exhibits two stages of weight loss in the range of 30 to 1000° C.

Abstract: A transition metal composite hydroxide can be used as a precursor to allow a lithium transition metal composite oxide having a small and highly uniform particle diameter to be obtained. A method also is provided for producing a transition metal composite hydroxide represented by a general formula (1) MxWsAt(OH)2+?, coated with a compound containing the additive element, and serving as a precursor of a positive electrode active material for nonaqueous electrolyte secondary batteries. The method includes producing a composite hydroxide particle, forming nuclei, growing a formed nucleus; and forming a coating material containing a metal oxide or hydroxide on the surfaces of composite hydroxide particles obtained through the upstream step.

Abstract: Provided is a lithium ion secondary battery including a power generation element, the power generation element including a positive electrode, a negative electrode, a separator, and an electrolyte solution, the positive electrode including a positive electrode current collector, and a positive electrode active material layer provided for the positive electrode current collector, the positive electrode active material layer including a positive electrode active material and binder, the negative electrode including a negative electrode current collector and a negative electrode active material layer provided for the negative electrode current collector, the negative electrode active material layer including a negative electrode active material and binder. The positive electrode has a volume resistivity in a range of 100 ?cm or more and 700 ?cm or less after at least one charging and discharging cycle.

Abstract: An Object of the invention is to obtain an all solid lithium battery having an excellent output performance. To achieve the object, a sulfide based solid electrolyte is used as an electrolyte; an oxide containing lithium, a metal element that acts as a redox couple, and a metal element that forms an electron-insulating oxide is used as a cathode active material; and the concentration of the metal element that forms the electron-insulating oxide on the surface of the cathode active material (oxide) that is in contact with the sulfide solid electrolyte is made high.

Abstract: An electrolytic solution for a secondary battery is provided. The electrolyte solution includes an electrolyte salt; and a solvent including a first solvent and a second solvent; wherein the first solvent includes 4-fluoro-1,3-dioxolane-2-one; and wherein the second solvent includes at least one of Chemical Formula No. 23, Chemical Formula No. 24, or Chemical Formula No. 25.

Abstract: Providing a negative-electrode material for nonaqueous-electrolyte secondary battery, the negative-electrode material including lithium silicate particles coated by a carbonaceous substance, a production process for the same, a negative electrode for nonaqueous-electrolyte secondary battery, and a nonaqueous-electrolyte secondary battery. A negative-electrode material for nonaqueous-electrolyte secondary battery includes lithium silicate particles having a surface at least some of which is coated by a carbonaceous substance formed by heating a carbon-containing compound at a thermal decomposition temperature of the carbon-containing compound or more and 1,100±° C. or less, the carbon-containing compound being a solid at ordinary temperature and exhibiting a zeta-potential absolute value being 60 or more against N-methyl-2-pyrrolidone (or NMP).

Abstract: A positive electrode active material for nonaqueous electrolyte secondary batteries, which has high energy density and excellent cycle characteristics. A positive electrode active material for nonaqueous electrolyte secondary batteries of the present invention is represented by general formula LiNixCoyM(1-x-y)O2(wherein M represents at least one element selected from among metal elements, 0.3?x<1.0 and 0<y?0.5) and is configured of particles, each of which is an aggregate of crystallites. Each particle has a compressive breaking strength of from 200 MPa to 500 MPa (inclusive), and the crystallite diameter in the vector direction of the particle is from 100 nm to 300 nm (inclusive).

Abstract: Some lithium-ion batteries are assembled using a plurality of electrically interconnected battery pouches to obtain the electrical potential and power requirements of the battery application. In this disclosure, such battery pouches are prepared to contain a stacked grouping of inter-layered and interconnected anodes, cathodes, and separators, each wetted with a liquid electrolyte. A pair of reference electrodes is combined in a specific arrangement with other cell members to enable accurate assessment of both anode group and cathode group performance, and to validate and regenerate reference electrode capability.

Abstract: Disclosed are methods and processes for producing electrochemical devices having well-organized nanostructures or microstructures. In one aspect, the present invention discloses a simple, cheap, and fast nanotechnology-based manufacturing process for fabricating high performance electrodes. The present processing technique is highly versatile and can be applied to diverse materials systems for anode and cathode electrodes.

Abstract: An all-solid-state secondary battery, including: a solid electrolyte layer; a positive electrode layer including a positive electrode active material layer and a first current collector layer; a negative electrode layer including a second current collector layer, the positive electrode layer and the negative electrode layer sandwiching the solid electrolyte layer; and external electrodes connected respectively to the first current collector layer and the second current collector layer, wherein the positive electrode active material layer is formed of an olivine-type active material, wherein the solid electrolyte layer is formed of a phosphate having a NASICON-type structure, and wherein the solid electrolyte layer contains particulate precipitate having an olivine-type crystal structure that includes a same element as an element forming the positive electrode active material layer.

Abstract: An electrochemical device (e.g., a battery (cell)) including: an aqueous electrolyte and one or two electrodes (e.g., an anode and/or a cathode), one or both of which is a Prussian Blue analogue material of the general chemical formula AxP[R(CN)6?jLj]z.nH2O, where: A is a cation; P is a metal cation; R is a transition metal cation; L is a ligand that may be substituted in the place of a CN? ligand; 0?x?2; 0?z?1; and 0?n?5, the electrode including a polymer coating to reduce capacity loss.

Abstract: Embodiments described herein relate generally to electrochemical cells having high rate capability, and more particularly to devices, systems and methods of producing high capacity and high rate capability batteries having relatively thick semi-solid electrodes. In some embodiments, an electrochemical cell includes an anode and a semi-solid cathode. The semi-solid cathode includes a suspension of an active material of about 35% to about 75% by volume of an active material and about 0.5% to about 8% by volume of a conductive material in a non-aqueous liquid electrolyte. An ion-permeable membrane is disposed between the anode and the semi-solid cathode. The semi-solid cathode has a thickness of about 250 ?m to about 2,000 ?m, and the electrochemical cell has an area specific capacity of at least about 7 mAh/cm2 at a C-rate of C/4. In some embodiments, the semi-solid cathode slurry has a mixing index of at least about 0.9.

Abstract: Embodiments described herein relate generally to electrochemical cells having high rate capability, and more particularly to devices, systems and methods of producing high capacity and high rate capability batteries having relatively thick semi-solid electrodes. In some embodiments, an electrochemical cell includes an anode, a semi-solid cathode that includes a suspension of an active material and a conductive material in a liquid electrolyte, and an ion permeable membrane disposed between the anode and the cathode. The semi-solid cathode has a thickness in the range of about 250 ?m-2,500 ?m, and the electrochemical cell has an area specific capacity of at least 5 mAh/cm2 at a C-rate of C/2.

Abstract: The present invention relates to a cathode material of Lithium-Nickel-Cobalt-Aluminum composite oxide, a method of fabricating the same, and a lithium ion battery including the same. The composite cathode material has a core-shell structure, wherein the core portion is made of LiNi1-x-yCoxAlyO2 which is washed with an alcohol and organic acid-mixed solution, wherein 0<x?0.2, 0<y?0.1; the shell is metal oxide layer. In the present invention, the composite cathode material is fabricated by a combined method, wherein the base material is washed with an alcohol and organic acid-mixed solution and the shell layer material is coated by spray drying. The composite cathode material of the present invention has low content of lithium impurities and excellent high-temperature cycling and storage performance.

Abstract: A positive electrode for a lithium secondary battery includes a positive activation material mixture that intercalates and de-intercalates lithium ions, wherein a first positive activation material having an average particle diameter D50 of from 12.5 ?m to 22 ?m and a second positive activation material having an average particle diameter D50 of from 1 ?m to 5 ?m are mixed with a weight ratio of from 95:5 to 60:40.

Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery according to an example of an embodiment of the present disclosure includes a lithium composite oxide as a main component. The ratio of a number of moles of Ni in the lithium composite oxide to a total number of moles of metal elements in the lithium composite oxide other than Li is larger than 30 mol %. The lithium composite oxide includes particles each including aggregated primary particles having a volumetric average particle size of 0.5 ?m or more and at least one element selected from W, Mo, Nb, and Ta is dissolved in the lithium composite oxide.

Abstract: A lithium ion rechargeable battery comprises: a negative electrode adapted to give up electrons during discharge, a positive electrode adapted to gain electrons during discharge, a microporous separator sandwiched between said positive electrode and said negative electrode, an organic electrolyte being contained within said separator and being in electrochemical communication with said positive electrode and said negative electrode, and an oxidative barrier interposed between said separator and said positive electrode, and thereby preventing oxidation of said separator.

Abstract: A lithium ion secondary battery with a high electrode density and an excellent rate discharge characteristic. The positive electrode includes a positive electrode active material of a compound represented by Lia(NixCoyAl1-x-y)O2 (0.95?a?1.05, 0.5?x?0.9, 0.05?y?0.2), and carbon adhered to the surface of the material, in the Raman spectrum using a laser of 532 nm, the positive electrode includes a peak PA (D band) at 1200˜1450 cm?1, a peak PB (G band) at 1450˜1700 cm?1 and a peak PC at 400˜600 cm?1, and when the intensities are normalized by regarding the maximum intensity as 1 and the minimum intensity as 0 in the wavenumber domain of 200˜1800 cm?1, Raman intensity of the minimum (V band) between the two peaks of said peak PA and said peak PB is 0.6 or less, and Raman intensity of said peak PC is 0.1 or more and 0.5 or less.

Abstract: Provided is a negative electrode for a nonaqueous secondary battery which achieves both suppression of reductive decomposition of an electrolyte or an electrolytic solution and suppression of an increase in resistance. Also provided are a method for producing such a negative electrode and a nonaqueous secondary battery employing such a negative electrode. A polymer coating layer is formed so as to coat at least part of surfaces of negative electrode active material particles containing silicon oxide (SiOx; 0.5?x?1.6). The polymer coating layer contains a cationic polymer having a positive zeta potential under neutral conditions. Since silicon oxide has a negative zeta potential, a thin uniform coating layer can be formed owing to Coulomb's force.

Abstract: The present invention provides positive electrode active substance particles which are improved in charge/discharge capacities, cycle characteristics and thermal stability. The positive electrode active substance particles according to the present invention comprise a compound having at least a crystal system belonging to a space group of R-3m and a crystal system belonging to a space group of C2/m and having a specific peak intensity ratio, in which a content of Mn in the compound is controlled such that a molar ratio of Mn/(Ni+Co+Mn) therein is not less than 0.55; a content of boron in the compound is 0.01 to 1% by weight; a content of fluorine in the compound is 0.01 to 5% by weight; and a content of an element A (at least one element selected from the group consisting of Al, Mg, Ti, Zr, Ca, Fe, Zn, Mo and Bi) in the compound is 0.

Abstract: The present invention relates to positive electrode active substance particles comprising a compound having at least a crystal system belonging to a space group of R-3m and a crystal system belonging to a space group of C2/m, the positive electrode active substance particles having a specific intensity ratio; a content of Mn in the positive electrode active substance particles being controlled such that a molar ratio of Mn/(Ni+Co+Mn) therein is not less than 0.55; and the positive electrode active substance particles comprising an element A (that is at least one element selected from the group consisting of Si, Zr and Y) in an amount of 0.03 to 5% by weight and having a tap density of 0.8 to 2.4 g/cc and a compressed density of 2.0 to 3.1 g/cc. The positive electrode active substance particles can be produced by calcining a mixture of precursor particles comprising the element A, Mn, Ni and/or Co, and a lithium compound.

Abstract: In one aspect, a composite cathode active material including at least one large-diameter active material, and at least one small-diameter active material, a cathode including the composite cathode active material and a lithium battery including the cathode is provided.

Abstract: The nonaqueous electrolyte secondary battery includes: a positive electrode containing a positive-electrode active material; a negative electrode; and a nonaqueous electrolyte. The positive-electrode active material contains a lithium-containing oxide obtained by ion-exchanging part of sodium in a cobalt-containing oxide containing lithium, sodium, and titanium with lithium.

Abstract: Provided are: a solid electrolyte battery using a novel positive electrode active material that functions in an amorphous state; and a novel positive electrode active material that functions in an amorphous state. The solid electrolyte battery includes: a positive electrode layer including a positive electrode active material layer; a negative electrode layer; and a solid electrolyte layer formed between the positive electrode layer and the negative electrode layer, and the positive electrode active material includes a lithium-boric acid compound in an amorphous state, which contains Li, B, any element M1 selected from Cu, Ni, Co, Mn, Au, Ag, and Pd, and O.

Abstract: Provided is a cathode for lithium secondary batteries comprising a combination of one or more compounds selected from Formula 1 and one or more compounds selected from Formula 2. The cathode provides a high power lithium secondary battery composed of a non-aqueous electrolyte which exhibits long lifespan, long-period storage properties and superior stability at ambient temperature and high temperatures.

Abstract: A battery testing system according to an exemplary aspect of the present disclosure includes, among other things, a penetrating device and an impedance meter electrically connected to the penetrating device.

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The positive electrode includes LixMnaNibCocMdO2(0<x<1.3, 0.1<a<0.7, 0.1<b<0.6, 0.1<c<0.67, 0?d<0.1, a+b+c+d=1, and M represents a metal selected from the group consisting of Al, Ti, Mg, Cr, Zn, W, Zr and Nb) as a positive active material. The nonaqueous electrolyte includes a cyclic disulfone compound of the general formula (1) in an amount of 0.1 to 4.0% by mass based on the total mass of the nonaqueous electrolyte.

Abstract: An object of the present invention is to provide a high-capacity, low cycle deterioration lithium secondary battery in which the positive electrode is provided with a titanium composite oxide such as Li2NiTiO4. A lithium secondary battery 100 provided by the present invention includes a positive electrode 10 and a negative electrode 20. The positive electrode 10 has a solid solution between Li2M1TiO4 (where M1 is at least one metal element selected from the group consisting of Mn, Fe, Co, and Ni) and LiM2O2 (where M2 is at least one metal element selected from the group consisting of Mn, Co, and Ni).

Abstract: Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a cathode active material composed of a mixture of lithium/manganese spinel oxide and lithium/nickel/cobalt/manganese composite oxide wherein the cathode active material exhibits the life characteristics that the capacity at 300 cycles is more than 70% relative to the initial capacity, in the provision of satisfying the condition (i) regarding the particle size and the condition (ii) regarding the mixing ratio.

Abstract: Disclosed herein is a cathode active material based on lithium nickel-manganese-cobalt oxide represented by Formula 1, wherein an ion-conductive solid compound and conductive carbon are applied to a surface of the lithium nickel-manganese-cobalt oxide. A lithium secondary battery having the disclosed cathode active material has improved rate properties and high temperature stability, in turn embodying excellent cell performance.

Abstract: A cathode composite material includes a cathode active material particle having a surface and a continuous aluminum phosphate layer. The continuous aluminum phosphate layer is coated on the surface of the cathode active material particle. The present disclosure also relates to a lithium ion battery including the cathode composite material.

Abstract: According to one embodiment, a nonaqueous electrolyte battery is provided. The battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode includes lithium iron phosphate having an olivine structure as positive electrode active material. The negative electrode includes lithium titanate having a spinel structure and a monoclinic ?-type titanium complex oxide as a negative electrode active material.

Abstract: Disclosed is a cathode active material and a method to produce the same at low cost. The cathode powder comprises modified LiCoO2, and possibly a second phase which is LiM?O2 where M? is Mn, Ni, Co with a stoichiometric ratio Ni:Mn?1. The modified LiCoO2 is Ni and Mn bearing and has regions of low and high manganese content, where regions with high manganese content are located in islands on the surface. The cathode material has high cycling stability, a very high rate performance and good high temperature storage properties.

Abstract: A positive active material for a rechargeable lithium battery includes a core including a lithiated intercalation compound, and a MgO that is present as an island shape on the core surface and having an average nano-size; a method of manufacturing this positive active material, and a rechargeable lithium battery including this positive active material are provided.

Abstract: A rechargeable lithium battery is provided that includes a negative electrode including a negative active material, a positive electrode including a positive active material, and an electrolyte. The electrolyte includes a lithium salt and a non-aqueous organic solvent including from about 1 to about 20 volume % of a cyclic carbonate and from about 80 to about 99 volume % of a linear carbonate. The positive electrode has an active mass density of about 3.7 g/cc or greater. The rechargeable lithium battery shows improved cycle-life and storage characteristics at high temperatures, and good high rate characteristics.