Abstract: A foreign element-containing vanadium sulfide contains, as constituent elements, vanadium, sulfur, and a foreign element, wherein the compositional ratio of the foreign element to the vanadium (M1/V) is in the range of 0.05 to 1.5 in terms of molar ratio; the compositional ratio of the sulfur to the vanadium (S/V) is in the range of 3.0 to 10.0 in terms of molar ratio; and the foreign element includes at least one member selected from the group consisting of Nb, Ti, Zr, Mo, Sc, and Y, or includes at least one member selected from the group consisting of Li, B, N, O, F, Mg, S, Cl, Ca, Br, Sr, Sc, I, Fe, Co, Ni, Zn, Y, Mo, Tc, and Cd. The foreign element-containing vanadium sulfide is an electrode active material for a lithium ion secondary battery that exhibits satisfactorily high initial capacity and that provides improved electrochemical performance or cycle performance.

Abstract: Provided are: an ion-conductive solid which can be produced by heat treatment at a low temperature and which has high ion conductivity; and, an all-solid-state battery having the ion-conductive solid. An ion-conductive solid containing an oxide represented by the general formula Li6-3a-2b-c-dYi1-c-dAlaMgbZrcCedB3O9; and, an all-solid-state battery having at least a positive electrode, a negative electrode, and an electrolyte, at least one element selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte containing the ion-conductive solid (In the formula, a is such that 0.000?a?0.800, b is such that 0.000?b?0.800, c is such that 0.000?c?0.400, d is such that 0.000?d?0.400, and a and b are real numbers satisfying 0.005?a+b?0.800.).

Abstract: An electrolyte solution that satisfies at least one of the following (A) and (B) can improve the charge/discharge cycle performances of nonaqueous secondary batteries containing a lithium-free transition metal sulfide as a cathode active material and can also improve initial coulombic efficiency when a specific additive is used: (A) the nonaqueous secondary battery electrolyte solution contains an organic solvent containing a cyclic carbonate compound, and the content of the cyclic carbonate compound is 80 to 100 vol %, and the content of a chain carbonate compound is 0 to 20 vol %, based on the total amount of the organic solvent taken as 100 vol %; and (B) the nonaqueous secondary battery electrolyte solution contains an organic solvent containing a cyclic carbonate compound and an additive.

Abstract: The present invention provides coated metal sulfide particles comprising a metal sulfide that is partially or totally coated with a coating layer containing a metal oxide, the metal sulfide having a composition ratio of sulfur to a metal (S/M1) of 2.1 to 10 in terms of the molar ratio. The coated metal sulfide particles are a material that improves charge-and-discharge cycle characteristics without reducing the initial capacity.

Abstract: An elastic film stretchable structure in which an elastic film is stacked between a first sheet layer having air permeability and a second sheet layer having air permeability, the first sheet layer and the second sheet layer are bonded through bonding holes penetrating the elastic film at a number of sheet bonded portions arranged at intervals. A region having the elastic film stretchable structure has a stretchable region that is stretchable in a stretchable direction, and the stretchable region is contracted in the stretchable direction by a contraction force of the elastic film and is extensible in the stretchable direction, and vent holes are formed on the elastic film at sites where the elastic film does not overlap with the sheet bonded portions.

Abstract: An electrode active material for lithium-ion secondary batteries that has a sufficiently high initial capacity, improved charge-and-discharge cycle characteristics, and improved coulombic efficiency in the mid-term charge-and-discharge cycles can be obtained by a phosphorus-containing low-crystalline vanadium sulfide comprising vanadium, phosphorus, and sulfur as constituent elements, the composition ratio of the phosphorus to the vanadium (P/V) being 0.1 to 1.0 in terms of the molar ratio, the composition ratio of the sulfur to the vanadium (S/V) being 4.00 to 10.00 in terms of the molar ratio.

Abstract: An ion conductive solid comprising an oxide represented by general formula: Li6-x-y-2zY1-x-y-zM1xM2yM3zB3O9 in formula, M1 and M2 are each independently at least one metal element selected from a group of Zr, Ce and Sn, M3 is Nb, and x, y, and z represent real numbers satisfying 0.000?x+y<1.000, 0.000?z?1.000, and 0.000<x+y+z<1.000.

Abstract: A stretchable elastic film is interposed in a stretched state between a first sheet layer having no elasticity and a second sheet layer having no elasticity. Heat melt energy is applied to a region of a large number of bonded portions spaced apart from each other by a heat melting apparatus from the outside of the first sheet layer and the second sheet layer to melt the elastic film. The first sheet layer and the second sheet layer are bonded directly or via an elastic film at the large number of bonded portions. The elastic film is caused to pass through the counter roll and the nip roll to pass along the counter roll and then pass along the anvil roll. The elastic film is stretched by making the circumferential speed of the anvil roll faster than the circumferential speed of the counter roll.

Abstract: An absorbent article includes a stretchable sheet that is a laminate of a non-stretchable first sheet layer, a non-stretchable second sheet layer, and an elastic film disposed between the first and second sheet layers, and the elastic film is stretchable at least in the front-back direction. The first sheet layer is bonded to the second sheet layer at a large number of joints directly or through the elastic film and the joints are arrayed at intervals. The stretchable sheet is contracted by a contraction force of the elastic film and can be stretched by an external force applied in the front-back direction. The leg portion is also contracted by a contraction force of the elastic film and can be stretched by an external force applied in the width direction. The leg portions and adjoined regions have different joint area rates and thereby have different stretching stresses.

Abstract: The present invention provides an organic sulfur material comprising carbon, hydrogen, and sulfur as constituent elements, and having peaks in the vicinity of 480 cm?1, 1250 cm?1, 1440 cm?1, and 1900 cm?1 in a Raman spectrum detected by Raman spectroscopy. The peak in the vicinity of 1440 cm?1 is the most intense peak. This organic sulfur material, which is produced by using a liquid organic starting material, achieves high capacity. This organic sulfur material preferably does not have peaks in the vicinity of 846 cm?1 or 1066 cm?1.

Abstract: An elastic film stretchable structure in which an elastic film is stacked between a first sheet layer having air permeability and a second sheet layer having air permeability, the first sheet layer and the second sheet layer are bonded through bonding holes penetrating the elastic film at a number of sheet bonded portions arranged at intervals. A region having the elastic film stretchable structure has a stretchable region that is stretchable in a stretchable direction, and the stretchable region is contracted in the stretchable direction by a contraction force of the elastic film and is extensible in the stretchable direction, and vent holes are formed on the elastic film at sites where the elastic film does not overlap with the sheet bonded portions.

Abstract: To acquire a stretchable sheet having air permeability due to the presence of through-holes, with no hole formed through outer layers. There are provided: interposing a resilient film (30) that stretches and contracts, in a stretched state between a first sheet layer (21) having no elasticity and a second sheet layer (22) having no elasticity; and joining the first sheet layer (21) and the second sheet layer (22) together with a number of joints directly or through the resilient film by melting the resilient film (30) with ultrasonic fusion energy applied by a thermal fusion device from the outside of the first sheet layer (21) and the outside of the second sheet layer (22) to a number of joint regions with intervals, during the interposing. The resilient film (30) is supplied around a counter roll (63) so as to be supplied around the anvil roll (60), and the anvil roll (60) is accelerated to be faster than the counter roll (63) in peripheral speed to stretch the resilient film (30).

Abstract: A composite containing phosphorus, lithium, iron, sulfur, and carbon as constituent elements wherein lithium sulfide (Li2S) is present in an amount of 90 mol % or more, and wherein the crystallite size calculated from the half-width of a diffraction peak based on the (111) plane of Li2S as determined by X-ray powder diffraction measurement is 80 nm or less. The composite exhibits a high capacity (in particular, a high discharge capacity) useful as an electrode active material for a lithium-ion secondary battery (in particular, a cathode active material for a lithium-ion secondary battery), without the need for stepwise pre-cycling treatment.

Abstract: A stretchable elastic film is interposed in a stretched state between a first sheet layer having no elasticity and a second sheet layer having no elasticity. Heat melt energy is applied to a region of a large number of bonded portions spaced apart from each other by a heat melting apparatus from the outside of the first sheet layer and the second sheet layer to melt the elastic film. The first sheet layer and the second sheet layer are bonded directly or via an elastic film at the large number of bonded portions. The elastic film is caused to pass through the counter roll and the nip roll to pass along the counter roll and then pass along the anvil roll. The elastic film is stretched by making the circumferential speed of the anvil roll faster than the circumferential speed of the counter roll.

Abstract: The main object is to provide a novel material with excellent charge and discharge characteristics, such as a high utilization rate of a positive electrode, a high capacity, and good cycle characteristic, in which the material is a compound containing as the major component lithium sulfide useful as a cathode active material for lithium secondary batteries. The invention provides a lithium sulfide-iron-carbon composite containing lithium, iron, sulfur and carbon as constituent elements, with lithium sulfide (Li2S), as the main phase, having a crystallite size of 50 nm or less as calculated from the half width of the diffraction peak based on the (111) plane of Li2S as determined by X-ray powder diffraction.

Abstract: The sulfide of the present invention comprises an amorphous (lithium) niobium sulfide having an average composition represented by formula (1): Lik1NbSn1 (wherein 0?k1?5; 3?n1?10; and when n1?3.5, k1?0.5), or an amorphous (lithium) titanium niobium sulfide having an average composition represented by formula (2): Lik2Ti1-m2Nbm2Sn2 (wherein 0?k2?5; 0<m2<1; 2?n2?10; and when n2?3.5, k2?1.5). The sulfide of the present invention is a material that is useful as a cathode active material for lithium batteries, such as lithium primary batteries, lithium secondary batteries, and lithium ion secondary batteries, and has a high charge-discharge capacity, high electrical conductivity, and excellent charge-discharge performance.

Abstract: The present invention provides a novel lithium titanium sulfide, lithium niobium sulfide, or lithium titanium niobium sulfide that contains a sulfide containing lithium, titanium and/or niobium, and sulfur as constituent elements, and that has excellent charge-discharge performance (especially excellent charge-discharge capacity and charge-discharge potential) useful as a cathode active material or the like for lithium batteries, such as metal lithium secondary batteries or lithium-ion secondary batteries.

Abstract: An absorbent article includes a stretchable sheet that is a laminate of a non-stretchable first sheet layer, a non-stretchable second sheet layer, and an elastic film disposed between the first and second sheet layers, and the elastic film is stretchable at least in the front-back direction. The first sheet layer is bonded to the second sheet layer at a large number of joints directly or through the elastic film and the joints are arrayed at intervals. The stretchable sheet is contracted by a contraction force of the elastic film and can be stretched by an external force applied in the front-back direction. The leg portion is also contracted by a contraction force of the elastic film and can be stretched by an external force applied in the width direction. The leg portions and adjoined regions have different joint area rates and thereby have different stretching stresses.

Abstract: The present invention provides an organic sulfur material comprising carbon, hydrogen, and sulfur as constituent elements, and having peaks in the vicinity of 480 cm?1, 1250 cm?1, 1440 cm?1, and 1900 cm?1 in a Raman spectrum detected by Raman spectroscopy. The peak in the vicinity of 1440 cm?1 is the most intense peak. This organic sulfur material, which is produced by using a liquid organic starting material, achieves high capacity. This organic sulfur material preferably does not have peaks in the vicinity of 846 cm?1 or 1066 cm?1.

Abstract: To acquire a stretchable sheet having air permeability due to the presence of through-holes, with no hole formed through outer layers. There are provided: interposing a resilient film (30) that stretches and contracts, in a stretched state between a first sheet layer (21) having no elasticity and a second sheet layer (22) having no elasticity; and joining the first sheet layer (21) and the second sheet layer (22) together with a number of joints directly or through the resilient film by melting the resilient film (30) with ultrasonic fusion energy applied by a thermal fusion device from the outside of the first sheet layer (21) and the outside of the second sheet layer (22) to a number of joint regions with intervals, during the interposing. The resilient film (30) is supplied around a counter roll (63) so as to be supplied around the anvil roll (60), and the anvil roll (60) is accelerated to be faster than the counter roll (63) in peripheral speed to stretch the resilient film (30).