Abstract: In a positive electrode of a non-aqueous electrolyte battery, at least one metal oxide selected from the group consisting of titanium dioxide, alumina, zinc oxide, chromium oxide, lithium oxide, nickel oxide, copper oxide and iron oxide is dispersed between particles of an active substance for the positive electrode, whereby a discharge capacity or a discharge-recharge capacity of the non-aqueous electrolyte battery is improved.

Abstract: This invention relates to a non-aqueous electrolyte exhibiting a non-combustibility even under a condition having a higher oxygen concentration, and more particularly to a non-aqueous electrolyte characterized by comprising a non-aqueous solvent containing a cyclic phosphazene compound represented by the following general formula (I): (NPR12)n ??(I) [wherein R1s are independently a halogen element or a monovalent substituent; and n is 3-4] and a fluorophosphate compound represented by the following general formula (II): [wherein R2s are independently a halogen element, an alkoxy group or an aryloxy group, and at least one of the two R2s is the alkoxy group or the aryloxy group], and a support salt.

Abstract: The invention relates to an electrolytic capacitor having a flame retardant electrolyte and a high safety even if the electrolyte leaks out to outside, and more particularly to an electrolytic capacitor comprising a positive electrode provided with an insulating oxide layer formed through anodic oxidation, a negative electrode, a separator and an electrolyte containing a solute in an organic solvent, characterized in that the electrolyte contains not less than 3% by mass of a phosphazene derivative and/or an isomer of a phosphazene derivative.

Abstract: This invention relates to a non-aqueous electrolyte for a cell and an electrolyte for a polymer cell in which the risk of igniting-firing an aprotic organic solvent retained in the cell and leaked out of the cell through vaporization or the like when the temperature of the cell rises abnormally is reduced, and to a non-aqueous electrolyte for a cell and an electrolyte for a polymer cell comprising an aprotic organic solvent and a compound containing phosphorus and/or nitrogen in its molecule and having a difference of a boiling point from that of the aprotic organic solvent of not more than 25° C.

Abstract: A highly safe non-aqueous electrolyte secondary cell with excellent self-extinguishing property or flame retardancy is provided which comprises an anode, a cathode, a non-aqueous electrolyte in which an Li-salt as a supporting salt is dissolved in an organic solvent, and a separator. When a high crystalline carbon material such as graphite is used as cathode active substances, it is possible to provide a non-aqueous electrolyte secondary cell whose charging/discharging life is lengthened, whose interface resistance at the non-aqueous electrolyte can be reduced, and which has excellent discharging characteristics at low temperature.

Abstract: A method of producing a silicon carbide single crystal, having: fixing a seed crystal, including setting a seed crystal on a seed crystal fixing part with interposition of an adhesive; applying a uniform pressure on the entire surface of the seed crystal by contacting a flexible bag which is inflatable and deflatable to the seed crystal by charging a gas into the to flexible bag; hardening the adhesive; and sublimating a silicon carbide powder obtained by calcinating a mixture containing at least a silicon source and a resol xylene resin, having a nitrogen content of 100 mass ppm or less and having a content of each impurity elements of 0.1 mass ppm or less, and re-crystallizing for growing a silicon carbide single crystal.

Abstract: The present invention provides additives for a non-aqueous electrolytic solution secondary cell and a non-aqueous electrolytic solution electric double layer capacitor comprising a phosphazene derivative represented by formula (1): (PNF2)n??formula (1) wherein n represents 3 to 14, and provides the non-aqueous electrolytic solution secondary cell and the non-aqueous electrolytic solution electric double layer capacitor each containing a non-aqueous electrolytic solution which has the additive for the non-aqueous electrolytic solution secondary cell or the additive for the non-aqueous electrolytic solution electric double layer capacitor and a supporting salt, an anode, and a cathode.

Abstract: The present invention provides an additive which is able to make a non-aqueous-electrolyte secondary cell or a non-aqueous electrolyte electric double layer capacitor which is excellent in low-temperature characteristics, while maintaining a necessary cell properties, and a non-aqueous-electrolyte secondary cell or a non-aqueous electrolyte electric double layer capacitor that contains therein the additive. The additive contains at least one of tautomers of phosphazene derivatives represented by formulae (1) and (2): wherein R1, R2 and R3 independently represent a monovalent substituent or a halogen element; X represents a substituent containing at least one selected from a group of carbon, silicon, germanium, tin, nitrogen, phosphorus, arsenic, antimony, bismuth, oxygen, sulfur, selenium, tellurium and polonium; and Y1 and Y2 independently represent a divalent connecting group, a divalent element or a single bond.

Abstract: The invention relates to an electrolytic capacitor having a flame retardant electrolyte and a high safety even if the electrolyte leaks out to outside, and more particularly to an electrolytic capacitor comprising a positive electrode provided with an insulating oxide layer formed through anodic oxidation, a negative electrode, a separator and an electrolyte containing a solute in an organic solvent, characterized in that the electrolyte contains not less than 3% by mass of a phosphazene derivative and/or an isomer of a phosphazene derivative.

Abstract: The invention is concerned with an additive for a non-aqueous electrolyte of an electric double layer capacitor having a high dissolving power of a support salt and a low viscosity and comprising a phosphazene derivative represented by the following formula (I): (wherein R1 is independently a halogen element or a monovalent substituent; and X is an organic group containing at least one element selected from the group consisting of carbon, silicon, nitrogen, phosphorus, oxygen and sulfur) as well as a non-aqueous electrolyte electric double layer capacitor comprising an electrolyte containing this additive and having excellent high-rate characteristics.

Abstract: A method of producing a silicon carbide powder comprising sintering a mixture containing at least a silicon source and a carbon source wherein the carbon source is a xylene-based resin. Preferable are an embodiment in which the above-mentioned silicon source is an alkoxysilane compound, an embodiment in which the above-mentioned alkoxysilane compound is selected from an ethoxysilane oligomer and an ethoxysilane polymer, an embodiment in which the above-mentioned mixture is obtained by adding an acid to a silicon source, then, by adding a carbon source, and other embodiments. A silicon carbide powder produced by the above-mentioned method of producing a silicon carbide powder wherein the nitrogen content is 100 ppm or less is preferable. A sintered silicon carbide obtained by sintering the above-mentioned silicon carbide powder wherein the volume resistivity is 1×100 ?·cm or more.

Abstract: The invention relates to an incombustible separator for a non-aqueous electrolyte cell in which the separator itself does not burn even if the temperature inside the cell becomes high, and more particularly to a separator for a non-aqueous electrolyte cell made of a microporous film formed by a phosphazene derivative and/or an isomer of a phosphazene derivative to a polymer.

Abstract: The invention is concerned with an additive for a non-aqueous electrolyte of a secondary battery having a high ability dissolving a support salt and a low viscosity and comprising a phosphazene derivative represented by the following formula (I): (wherein R1 is independently a halogen element or a monovalent substituent; and X is an organic group containing at least one element selected from the group consisting of carbon, silicon, nitrogen, phosphorus, oxygen and sulfur) as well as a non-aqueous electrolyte secondary battery comprising an electrolyte containing this additive and having excellent high-rate characteristics.

Abstract: An object of the present invention is to provide a non-aqueous electrolyte secondary cell having excellent resistance to deterioration, excellent self-extinguishability or incombustibility, and excellent discharge properties at low temperatures, a deterioration inhibitor for a non-aqueous electrolyte secondary cell which can improve resistance to deterioration, and an additive for a non-aqueous electrolyte which can improve self-extinguishability or incombustibility. The non-aqueous electrolyte secondary cell has a positive electrode, a negative electrode, and, in a first aspect, a non-aqueous electrolyte containing at least 2% by volume and less than 20% by volume of a phosphazene derivative, and a supporting salt, and, in a second aspect, a non-aqueous electrolyte containing at least 20% by volume of the phosphazene derivative, and the supporting salt.

Abstract: A support salt for a cell comprising a compound represented by the following formula (I) or (II): (NPA12)3??(I) A13P?N—P(?O)A12??(II) (in the formulae (I) and (II), A1 is independently NRLi or F, and at least one of A1s is NRLi, and R is a monovalent substituent) has an effect of suppressing combustion, and a non-aqueous electrolyte cell and a polymer cell using such a support salt considerably reduce the risk of ignition-fire and are high in the safety.

Abstract: In a positive electrode of a non-aqueous electrolyte battery, at least one alkaline earth metal oxide selected from the group consisting of magnesium oxide, calcium oxide and barium oxide is dispersed between particles of an active substance for positive electrode, whereby a discharge capacity or recharge-discharge capacity of the non-aqueous electrolyte battery just after the preparation and after the storing at high temperature is improved.

Abstract: In a non-aqueous electrolyte primary cell comprising a positive electrode, a negative electrode and a non-aqueous electrolyte containing a support salt, a phosphazene derivative and/or an isomer of a phosphazene derivative is included in the non-aqueous electrolyte, whereby the safety of the non-aqueous electrolyte primary cell is improved while maintaining cell characteristics thereof.

Abstract: In a positive electrode of a non-aqueous electrolyte battery, at least one metal oxide selected from the group consisting of titanium dioxide, alumina, zinc oxide, chromium oxide, lithium oxide, nickel oxide, copper oxide and iron oxide is dispersed between particles of an active substance for the positive electrode, whereby a discharge capacity or a discharge-recharge capacity of the non-aqueous electrolyte battery is improved.

Abstract: A non-aqueous electrolyte cell comprises a positive electrode, a negative electrode and a non-aqueous electrolyte containing a support salt. The non-aqueous electrolyte further comprises a phosphazene derivative. The phosphazene derivative having a specified structure functions as an electrode stabilizing agent or a non-combustion agent.

Abstract: This invention is a polymer cell comprising a positive electrode, a negative electrode and a polymer electrolyte containing a polymer, a support salt and a phosphazene derivative, and can be preferably used in various fields because the self-extinguishing property or fire retardant property, stability, low-temperature discharge property and high-temperature storing property are excellent while maintaining cell characteristics and the like required as a cell and the leakage of electrolyte is free and the thinning and miniaturization are possible.