摘要:
A capacitor having at least an anode body composed of a tungsten sintered compact and having less leakage current under high-voltage conditions and less variation in leakage current values, is obtained by a production method comprising the steps of: compacting a tungsten powder to obtain a compression body; firing the compression body to obtain an anode body; applying voltage to the anode body, which is used as an positive electrode, in an alkaline fluid; chemically converting the surface layer of the anode body into a dielectric; optionally removing water from the anode body; and heat-treating the anode body, whose surface has been chemically converted into a dielectric, at a temperature of 100 °C or more and 260 °C or less.
摘要:
The present invention relates to an activated carbon produced by alkali-activating a raw coke or the heat treated product thereof produced by heating a raw coke under atmospheric pressure at a temperature of 550 to 900°C, with an alkali metal hydroxide, wherein the raw coke is produced by coking a feedstock composition at a pressure of 300 to 800 kPa and a temperature of 400 to 600°C. The feedstock composition comprises a first heavy oil with an initial boiling point of 300°C or higher, an asphalten content of 12 percent by mass or less, a saturate content of 60 percent by mass or more and a sulfur content of 0.3 percent by mass or less, produced as a residue resulting from vacuum-distillation of a petroleum-based oil and a second heavy oil with an initial boiling point of 150°C or higher and a sulfur content of 0.5 percent by mass or less, produced as a residue by subjecting a vacuum gas oil or desulfurized vacuum gas oil to fluidized catalytic cracking. The present invention relates also to an electric double layer capacitor comprising said activated carbon.
摘要:
The present invention relates to a raw coke produced by coking a feedstock composition at a pressure of 300 to 800 kPa and a temperature of 400 to 600°C, wherein the feedstock composition comprises a first heavy oil with an initial boiling point of 300°C or higher, an asphalten content of 12 percent by mass or less, a saturate content of 60 percent by mass or more and a sulfur content of 0.3 percent by mass or less, produced as a residue resulting from vacuum-distillation of a petroleum-based oil and a second heavy oil with an initial boiling point of 150°C or higher and a sulfur content of 0.5 percent by mass or less, produced as a residue by subjecting a vacuum gas oil or desulfurized vacuum gas oil to fluidized catalytic cracking, and to a needle coke produced by calcining said raw coke at a temperature of 800 to 1600°C.
摘要:
The present invention provides a nitrogen-containing carbon material characterized in that it satisfies a specific relational expression between the number ratio of nitrogen atoms to carbon atoms and the number ratio of hydrogen atoms to carbon atoms and has peaks in specific regions in the X-ray diffraction and in the laser Raman spectrum. The nitrogen-containing carbon material of the present invention can be produced by carbonizing azulmic acid in an inert gas atmosphere, and it is useful as an electrode material or the like because it has a high nitrogen content and a low hydrogen content.
摘要:
The invention relates to an assembly for storing electrical energy, including: at least four stacked complexes (1, 1';2, 2'), each including at least one electrode; at least one separator (3), the separator(s) being arranged such that a separator is arranged between each pair of adjacent complexes; two connecting terminals for electrically connecting the assembly to a voltage generator, a first sample of complexes (1') being electrically connected to or constituting the first of the two terminals, and a second sample of complexes (2') being electrically connected to or constituting the other of the two terminals, the two samples being selected such that the number of complexes belonging to the combination of the two samples is less than the total number of complexes, and that the intersection of the two samples is an empty set.
摘要:
The electrode (10) has an electrode support (12), and an active electrode material (14) single- or double-sidely applied on the support. A part of the support protrudes from the material. The support is formed from copper content alloy, which includes a tin with concentration of 0.01 weight percentage, where copper content forms large weight proportion of the alloy. The part of the support is utilized as a main lead (16) for supplying charging current to the electrode. The alloy includes mixed crystal under participation of copper and tin, where the electrode includes lithium or lithium ion. An independent claim is also included for an energy storage device including a separator between two electrodes.