Abstract: Provided are a positive electrode active material for a lithium-ion secondary battery having excellent capacity characteristics and electrode resistance characteristics, a positive electrode active material slurry, a positive electrode, a lithium-ion secondary battery and a method for preparing a positive electrode active material. The positive electrode active material includes a core containing a lithium transition metal oxide, and a coating portion at least partially covering the surface of the core and containing iodine and boron.

Abstract: Disclosed is a solid electrolyte for a solid-state battery having improved water resistance. The solid electrolyte for a solid-state battery includes a sulfide-based solid electrolyte and a LiBr-containing absorbent material, wherein the binding energy of Li1s shows a peak observed at 54.2-56.1 eV, and the binding energy of Br3d shows a peak observed at 67.5-69.5 eV, as determined by X-ray photoelectron spectroscopy (XPS).

Abstract: Provided are a negative electrode for a secondary battery having improved life characteristics, a negative electrode slurry and a method for manufacturing a negative electrode. The negative electrode for a secondary battery includes at least a graphite-based material and a silicon-based material, as a negative electrode active material, and a conductive material, wherein the graphite-based material includes a granulated product of artificial graphite with natural graphite, at least a part of natural graphite in the granulated product is exfoliated partially to form an exfoliated portion, and the exfoliated portion is in contact with the silicon-based material or another granulated product of artificial graphite with natural graphite, or forms a composite with the silicon-based material.

Abstract: A positive electrode active material, a method of making the same, and a lithium-ion secondary battery including the same are disclosed herein. A lithium-ion secondary battery including the positive electrode active material can have excellent cycle characteristics at high temperature. In some embodiments, a positive electrode active material a lithium transition metal oxide, and an iodine-containing material at least partially covering the lithium transition metal oxide, where the iodine-containing material contains iodine having an oxidation number of +3 to +7.

Abstract: The present disclosure is directed to providing an electrolyte solution with a long cycle life by suppressing degradation of the battery characteristics under the high temperature condition. There is provided a nonaqueous electrolyte solution comprising a compound comprising 5 to 20 mass % of nitrogen atoms and 25 to 70 mass % of sulfur atoms or oxygen atoms in a molecule and having no disulfide bond in the molecule, wherein the compound comprises at least two sulfur atoms or oxygen atoms in the molecule.

Abstract: The purpose of the present invention is to provide: a spice that is useful for cooking bento lunches, side dishes, etc., that have a long shelf life; and a mixed spice that contains the aforementioned spice. According to the present invention, at least one spice selected from the group consisting of coriander seeds, coriander leaves, thyme, cloves, allspice, rosemary, lemongrass, Italian spice, and oregano is used, thereby making it possible to reduce unique unpleasant odors derived from meats and other food products, the unpleasant odors being produced in association with the elapse of time after cooking with heat.

Abstract: An aqueous slurry for a positive electrode includes an aqueous binder to impart the outstanding lithium ionic conductivity, adhesive property and chemical stability to a positive electrode. The aqueous slurry for a positive electrode has a binder composition for a positive electrode including a polyvinylidene fluoride (PVDF)-based polymer and a water-soluble polymer comprising carboxymethyl cellulose (CMC), and positive electrode active material particles dispersed in an aqueous solvent.

Abstract: A negative electrode active material for a secondary battery for achieving high initial efficiency and improved discharge capacity and capacity retention. The negative electrode active material for a secondary battery includes first silicon oxide powder particles doped with at least one of alkali metal or alkaline earth metal, and second silicon oxide powder particles, which are not doped, wherein the second silicon oxide powder particles are amorphous. A negative electrode and a secondary battery including the negative electrode active material are also disclosed.

Abstract: Provided is an anode material for a secondary battery which reduces and inhibits swelling of a high-capacity silicon-containing alloy material to realize excellent charge/discharge cycle characteristics. The anode material includes alloy particles containing a transition metal which has electron conductivity, is difficult to react with lithium atoms and is at least one selected from the group of metals that belong to transition metals, and silicon, wherein the alloy particles include amorphous silicon, and silicide microcrystals formed by silicon and the transition metal, and the silicide microcrystals are scattered in amorphous silicon.

Abstract: Alloy particles for negative electrode active material are proposed, which can impart anti-oxidation property to Si-containing alloy particles, and suppress oxidation of the negative electrode active material due to electrolyte at a considerably high level. A negative electrode material of secondary battery is achieved by a negative electrode material of secondary battery which is capable of intercalating and de-intercalating lithium and which consists of alloy particles including a silicon phase, a metal phase and bismuth, in which a crystallite size of the silicon phase is 10 nm or smaller, and the metal phase includes at least one kind of metal alloying with silicon but not with lithium, and the negative electrode material includes primary particles formed at least by the silicon and the metals.

Abstract: A negative electrode active material is provided, which can reduce and suppress ratio of expansion of silicon, provide enhanced conductivity, and realize superior charge/discharge cycle characteristic. The negative electrode material for secondary battery capable of occluding and releasing lithium consists of alloy particles having a silicon phase and a metal phase, and a carbonaceous material, in which crystallite size of the silicon phase is 10 nm or less, and the metal phase includes two or more kinds of metals alloying with silicon but not with lithium, and the carbonaceous material has crystallite size of 30 nm or more, and the carbonaceous material is present on the surface of, or within the alloy particles.

Abstract: Provided is an anode material for a secondary battery which reduces and inhibits swelling of a high-capacity silicon-containing alloy material to realize excellent charge/discharge cycle characteristics. The anode material includes alloy particles containing a transition metal which has electron conductivity, is difficult to react with lithium atoms and is at least one selected from the group of metals that belong to transition metals, and silicon, wherein the alloy particles include amorphous silicon, and silicide microcrystals formed by silicon and the transition metal, and the silicide microcrystals are scattered in amorphous silicon.

Abstract: A negative electrode active material is provided, which can reduce and suppress ratio of expansion of silicon, provide enhanced conductivity, and realize superior charge/discharge cycle characteristic. The negative electrode material for secondary battery capable of occluding and releasing lithium consists of alloy particles having a silicon phase and a metal phase, and a carbonaceous material, in which crystallite size of the silicon phase is 10 nm or less, and the metal phase includes two or more kinds of metals alloying with silicon but not with lithium, and the carbonaceous material has crystallite size of 30 nm or more, and the carbonaceous material is present on the surface of, or within the alloy particles.

Abstract: Alloy particles for negative electrode active material are proposed, which can impart anti-oxidation property to Si-containing alloy particles, and suppress oxidation of the negative electrode active material due to electrolyte at a considerably high level. A negative electrode material of secondary battery is achieved by a negative electrode material of secondary battery which is capable of intercalating and de-intercalating lithium and which consists of alloy particles including a silicon phase, a metal phase and bismuth, in which a crystallite size of the silicon phase is 10 nm or smaller, and the metal phase includes at least one kind of metal alloying with silicon but not with lithium, and the negative electrode material includes primary particles formed at least by the silicon and the metals.

Abstract: Disclosed is a negative active material for a rechargeable lithium battery including ultra-fine particles comprising an element which is capable of alloying with lithium. The particles have a diameter of 1 nm to 200 nm, a Raman shift of 480 cm?1 to 520 cm?1 measured by Raman Spectroscopy, and a full width at half-maximum of 10 cm?1 to 30 cm?1.

Abstract: Disclosed is an electrode material for a lithium secondary battery, a lithium secondary battery comprising the same, and a method for preparing the electrode material for a lithium secondary battery. The electrode material for a lithium secondary battery includes Si as a principal component, wherein the interplanar spacing of an Si (111) surface is between 3.15 ?and 3.20 ? using X-ray diffraction. This is achieve by first alloying Si with an element selected from the group consisting of Al, B, P, Ge, Sn, Pb, Ni, Co, Mn, Mo, Cr, V, Cu, Fe, Ni, W, Ti, Zn, alkali metals, alkaline earth metals, and combinations thereof, and then eluting X from the resulting alloy.

Abstract: Disclosed is a negative active material for a rechargeable lithium battery comprising a Si phase, a SiM phase and at least one of a X phase and a SiX phase, wherein each of phases has a crystal grain size of 100 nm and 500 nm. The element M is at least one selected from the group consisting of Ni, Co, B, Cr, Cu, Fe, Mn, Ti, and Y, the element X is at least one selected from the group consisting of Ag, Cu, and Au. However, where M is Cu, X is not Cu.

Abstract: Disclosed is an electrode material for a lithium secondary battery, a lithium secondary battery comprising the same, and a method for preparing the electrode material for a lithium secondary battery. The electrode material for a lithium secondary battery includes Si as a principal component, wherein the interplanar spacing of an Si (111) surface is between 3.15 ? and 3.20 ? using X-ray diffraction. This is achieve by first alloying Si with an element selected from the group consisting of Al, B, P, Ge, Sn, Pb, Ni, Co, Mn, Mo, Cr, V, Cu, Fe, Ni, W, Ti, Zn, alkali metals, alkaline earth metals, and combinations thereof, and then eluting X from the resulting alloy.

Abstract: Disclosed is an electrode material for a lithium secondary battery, a lithium secondary battery comprising the same, and a method for preparing the electrode material for a lithium secondary battery. The electrode material for a lithium secondary battery includes Si as a principal component, wherein the interplanar spacing of an Si(111) surface between 3.15 ? and 3.20 ? using X-ray diffraction. This is achieve by first alloying Si with an element selected from the group consisting of Al, B, P, Ge, Sn, Pb, Ni, Co, Mn, Mo, Cr, V, Cu, Fe, Ni, W, Ti, Zn, alkali metals, alkaline earth metals, and combinations thereof, and then eluting X from the resulting alloy.

Abstract: Disclosed is a negative active material for a rechargeable lithium battery comprising a Si phase, a SiM phase and at least one of a X phase and a SiX phase, wherein each of phases has a crystal grain size of 100 nm and 500 nm. The element M is at least one selected from the group consisting of Ni, Co, B, Cr, Cu, Fe, Mn, Ti, and Y, the element X is at least one selected from the group consisting of Ag, Cu, and Au. However, where M is Cu, X is not Cu.