Abstract: It is an object of the present invention to provide a thermally conductive sheet that is excellent in thermally conductive property, has insulation property, has a low permittivity, and is excellent in designability. The thermally conductive sheet 1 comprises a binder component 11, titanium oxide, titanium nitride, and a thermally conductive filler 12 other than these, and a ratio of the titanium oxide to the total of the titanium oxide and the titanium nitride is 20 to 90% by mass. An L* value of a surface of the thermally conductive sheet 1 in the L*a*b* color system is preferably 41 or less. The total content of the titanium oxide and the titanium nitride is preferably 0.3 to 10.0 parts by mass based on the total amount 100 parts by mass of the thermally conductive filler 12.

Abstract: A positive-electrode material for a lithium ion secondary battery contains a lithium complex compound that is represented by the formula: Li1+aNibMncCodTieMfO2+?, and has an atomic ratio Ti3+/Ti4+ between Ti3+ and Ti4+, as determined through X-ray photoelectron spectroscopy, of greater than or equal to 1.5 and less than or equal to 20. In the formula, M is at least one element selected from the group consisting of Mg, Al, Zr, Mo, and Nb, and a, b, c, d, e, f, and a are numbers satisfying ?0.1?a?0.2, 0.7<b?0.9, 0?c<0.3, 0?d<0.3, 0<e?0.25, 0?f<0.3, b+c+d+e+f=1, and ?0.2???0.2.

Abstract: A positive-electrode material for a lithium ion secondary battery contains a lithium complex compound that is represented by the formula: Li1+aNibMncCodTieMfO2+?, and has an atomic ratio Ti3+/Ti4+ between Ti3+ and Ti4+, as determined through X-ray photoelectron spectroscopy, of greater than or equal to 1.5 and less than or equal to 20. In the formula, M is at least one element selected from the group consisting of Mg, Al, Zr, Mo, and Nb, and a, b, c, d, e, f, and a are numbers satisfying ?0.1?a?0.2, 0.7<b?0.9, 0?c<0.3, 0?d<0.3, 0<e?0.25, 0?f<0.3, b+c+d+e+f=1, and ?0.2???0.2.

Abstract: A positive-electrode material for a lithium ion secondary battery contains a lithium complex compound that is represented by the formula: Li1+aNibMncCodTieMfO2+?, and has an atomic ratio Ti3+/Ti4+ between Ti3+ and Ti4+, as determined through X-ray photoelectron spectroscopy, of greater than or equal to 1.5 and less than or equal to 20. In the formula, M is at least one element selected from the group consisting of Mg, Al, Zr, Mo, and Nb, and a, b, c, d, e, f, and ? are numbers satisfying ?0.1?a?0.2, 0.7<b?0.9, 0?c<0.3, 0?d<0.3, 0<e?0.25, 0?f<0.3, b+c+d+e+f=1, and ?0.2???0.2.

Abstract: The purpose of the present invention is to provide: an additive for electrochemical elements, which is capable of improving the service life characteristics of a battery, while having high physical stability; an electrolyte solution for electrochemical elements, which uses this additive for electrochemical elements; an electrochemical element; an electrolyte solution for lithium ion secondary batteries; a lithium ion secondary battery; and a method for producing an additive for electrochemical elements. An additive for electrochemical elements according to the present invention is characterized by being represented by general formula [(BO)3(OR)3]m(H2O)n (wherein each of m and n represents an integer of 1 or more; and each R independently represents an organic group having 1 or more carbon atoms). A method for producing an additive for electrochemical elements according to the present invention is characterized by a synthesis by means of dehydration condensation of boric acid and an alcohol.

Abstract: A positive-electrode material for a lithium ion secondary battery contains a lithium complex compound that is represented by the formula: Li1+aNibMncCodTieMfO2+?, and has an atomic ratio Ti3+/Ti4+ between Ti3+ and Ti4+, as determined through X-ray photoelectron spectroscopy, of greater than or equal to 1.5 and less than or equal to 20. In the formula, M is at least one element selected from the group consisting of Mg, Al, Zr, Mo, and Nb, and a, b, c, d, e, f, and ? are numbers satisfying ?0.1?a?0.2, 0.7<b?0.9, 0?c<0.3, 0?d<0.3, 0<e?0.25, 0?f<0.3, b+c+d+e+f=1, and ?0.2???0.2.

Abstract: The present invention provides a high capacity lithium secondary cell in which the decrease in capacity associated with the charge and discharge cycle is small, and a method for manufacturing the lithium secondary cell. This lithium secondary cell is characterized in being provided with a positive electrode containing a lithium-transition metal composite oxide for which lithium ions can be reversibly stored and released, a negative electrode, and a non-aqueous electrolyte; the non-aqueous electrolyte containing a boroxine compound represented by the general formula (RO)3(BO)3 (where each R independently represents a C2-6 organic group); and the value of the ratio of the number of moles of the boroxine compound and the number of moles of the transition metal atoms in the lithium-transition metal composite oxide being 5.7×10?3 or less.

Abstract: A positive-electrode material for a lithium ion secondary battery contains a lithium complex compound that is represented by the formula: Li1+aNibMncCodTieMfO2+?, and has an atomic ratio Ti3+/Ti4+ between Ti3+ and Ti4+, as determined through X-ray photoelectron spectroscopy, of greater than or equal to 1.5 and less than or equal to 20. In the formula, M is at least one element selected from the group consisting of Mg, Al, Zr, Mo, and Nb, and a, b, c, d, e, f, and ? are numbers satisfying ?0.1?a?0.2, 0.7<b?0.9, 0?c<0.3, 0?d<0.3, 0<e?0.25, 0?f<0.3, b+c+d+e+f=1, and ?0.2???0.2.

Abstract: Provided are a lithium secondary battery having improved initial capacity and excellent cycle property, an electrolyte solution for the lithium secondary battery, and an additive for the electrolyte solution for the lithium secondary battery. The lithium secondary battery includes positive and negative electrodes both having a lithium-ion intercalation/de-intercalation ability, and a non-aqueous electrolyte solution contacted with the positive and negative electrodes. The non-aqueous electrolyte solution contains lithium hexafluorophosphate and a boroxine compound represented by (RO)3(BO)3 liquefying at 25° C. R(s) each independently represent an organic group of a linear chain alkyl group having 3 or more carbon atoms. Herein, the chain alkyl group may have a branch, and when the branch is included, the number of carbon atoms of the chain alkyl group constructing a linear portion thereof is 3 or more.

Abstract: Disclosed is an electrolyte solution used for a lithium secondary battery having high capacity, less undergoing aging deterioration of capacity, and also excellent in life characteristic. The electrolyte solution used for a lithium secondary battery contains a compound having a trivalent or higher boron formed by incorporation of a boroxine compound represented by (RO)3(BO)3 in which R(s) each represent independently an organic group of 1 to 6 carbon atoms and LiPF6, and a non-aqueous solvent.

Abstract: Provided are a non-aqueous electrolyte solution used for a lithium secondary battery etc. capable of decreasing aging deterioration of a discharge capacity, a cathode used for a lithium secondary battery, and a method for producing the same, as well as a storage device like a lithium secondary battery etc. To the non-aqueous electrolyte solution, added are POF2? or a salt thereof, and, PO2F2? or a salt thereof or PO3F2? or a salt thereof. Alternatively, added is a reaction product between a boroxine compound and lithium hexafluorophosphate. In the cathode, the average oxidation number of a transition metal present in a surface layer of a composite oxide is more than 4 in Mn, more than 3 in Co and more than 2 in Ni, respectively. Further, a boron-containing compound is present on a surface of the composite oxide.

Abstract: The invention addresses the problem of providing a lithium ion secondary battery excellent in initial charge-discharge characteristics and life characteristics. To solve the above problem, the invention provides a lithium ion secondary battery in which an electrode group having a positive electrode and a negative electrode is housed in a battery can, wherein the negative electrode includes a negative electrode active material supported on a negative electrode foil, and the negative electrode active material includes cores having SiO as a main component, a composite oxide coating layer of Fe and SiO2 disposed on the periphery of each of the cores, and a carbon coating layer disposed on the periphery of the composite oxide coating layer of Fe and SiO2.

Abstract: A positive-electrode material for a lithium ion secondary battery contains a lithium complex compound that is represented by the formula: Li1+aNibMncCodTieMfO2+?, and has an atomic ratio Ti3+/Ti4+ between Ti3+ and Ti4+, as determined through X-ray photoelectron spectroscopy, of greater than or equal to 1.5 and less than or equal to 20. In the formula, M is at least one element selected from the group consisting of Mg, Al, Zr, Mo, and Nb, and a, b, c, d, e, f, and ? are numbers satisfying ?0.1?a?0.2, 0.7<b?0.9, 0?c<0.3, 0?d<0.3, 0<e?0.25, 0?f<0.3, b+c+d+e+f=1, and ?0.2???0.2.

Abstract: The invention addresses the problem of providing a lithium ion secondary battery excellent in initial charge-discharge characteristics and life characteristics. To solve the above problem, the invention provides a lithium ion secondary battery in which an electrode group having a positive electrode and a negative electrode is housed in a battery can, wherein the negative electrode includes a negative electrode active material supported on a negative electrode foil, and the negative electrode active material includes cores having SiO as a main component, a composite oxide coating layer of Fe and SiO2 disposed on the periphery of each of the cores, and a carbon coating layer disposed on the periphery of the composite oxide coating layer of Fe and SiO2.

Abstract: Provided are a lithium secondary battery having improved initial capacity and excellent cycle property, an electrolyte solution for the lithium secondary battery, and an additive for the electrolyte solution for the lithium secondary battery. The lithium secondary battery includes positive and negative electrodes both having a lithium-ion intercalation/de-intercalation ability, and a non-aqueous electrolyte solution contacted with the positive and negative electrodes. The non-aqueous electrolyte solution contains lithium hexafluorophosphate and a boroxine compound represented by (RO)3(BO)3 liquefying at 25° C. R(s) each independently represent an organic group of a linear chain alkyl group having 3 or more carbon atoms. Herein, the chain alkyl group may have a branch, and when the branch is included, the number of carbon atoms of the chain alkyl group constructing a linear portion thereof is 3 or more.

Abstract: A lithium ion secondary battery includes a negative electrode primarily containing carbon as an active material, the negative electrode including a negative electrode active material and a coating material formed on the surface of the negative electrode active material, and the coating material is composed of a compound including boron and an alkyl group, and adsorbed on the surface of the negative electrode active material surface.

Abstract: Disclosed is an electrolyte solution used for a lithium secondary battery having high capacity, less undergoing aging deterioration of capacity, and also excellent in life characteristic. The electrolyte solution used for a lithium secondary battery contains a compound having a trivalent or higher boron formed by incorporation of a boroxine compound represented by (RO)3(BO)3 in which R(s) each represent independently an organic group of 1 to 6 carbon atoms and LiPF6, and a non-aqueous solvent.

Abstract: A nonaqueous electrolyte and a lithium ion battery with reduced temporal variations in battery characteristics from initial values are provided. A mixed solution is prepared by dissolving a lithium salt such as LiPF6 in a nonaqueous solvent such as ethylene carbonate. Allylboronate ester and siloxane are mixed with the mixed solution. The content of the allylboronate ester is 1 wt % or less. The content of the siloxane is 2 wt % or less. 2-Allyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane is used as the allylboronate ester. At least one kind selected from hexamethyldisiloxane and 1,3-divinyltetramethyldisiloxane is used as the siloxane.

Abstract: A nonaqueous electrolyte and a lithium ion battery with reduced temporal variations in battery characteristics from initial values are provided. A mixed solution is prepared by dissolving a lithium salt such as LiPF6 in a nonaqueous solvent such as ethylene carbonate. Allylboronate ester and siloxane are mixed with the mixed solution. The content of the allylboronate ester is 1 wt % or less. The content of the siloxane is 2 wt % or less. 2-Allyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane is used as the allylboronate ester. At least one kind selected from hexamethyldisiloxane and 1,3-divinyltetramethyldisiloxane is used as the siloxane.

Abstract: The purpose of the present invention is to examine a novel core material for a lithium secondary battery and to provide a battery in which there is minimal variation from initial battery characteristics over time during long-term storage of the battery. In order to enhance the high-temperature storage characteristics of a lithium battery, a resin composed primarily of a cellulose-containing polypropylene is used as a winding core material.