Abstract: An electric double layer capacitor having a pair of polarized electrodes and an electrolytic solution capable of forming an electric double layer at the interface with the polarized electrodes, wherein the electrolytic solution is an organic electrolytic solution containing a fluorobenzene of the formula 1: 1

Abstract: An electric double layer capacitor having a pair of polarized electrodes and an electrolytic solution capable of forming an electric double layer at the interface with the polarized electrodes, wherein the electrolytic solution comprises a salt of the Formula 1 as the electrolyte and at least dimethyl carbonate as a solvent:

Abstract: A process for producing a carbon material for an electric double layer capacitor electrode, including activating a graphitizable carbon or a graphitizable carbon source to have its pore volume in the range of 0.6 to 1.5 cm3/g, and imparting mechanical impact force to the graphitizable carbon or the graphitizable carbon source activated in the activating step to reduce the pore volume to at most 75% of that before the mechanical impact force is imparted.

Abstract: A laminated electric double layer capacitor module having electrode assemblies with positive and negative electrodes disposed to face each other, an ion permeable separator disposed between adjacent electrode assemblies so as to separate respective electrode layers from each other, a metal current collector plate for the positive electrodes, and a metal current collector plate for the negative electrodes, an electrolyte, and a module case. The electrode assemblies, the separators, and the current collector plates for the positive and negative electrodes are integrated into a laminated assembly of the capacitor module. A plurality of laminated assemblies are accommodated in a plurality of element compartments and electrically connected in series.

Abstract: An electrochemical device comprises a pair of electrodes (31, 32) having electrode layers (31b, 31c, 32b, 32c) formed on strip-like collectors (31a, 32a) except on their strip-like portions (31ax, 32ax) along a longitudinal side of the strip-like collectors; striplike separators (33a, 33b) insulating these; two collector plates (72, 73) connected to the strip-like portions; a case (60) accommodating these; a lid (63) for sealing the case; a pair of terminals (91, 92) connected to the collector plates and being connectable to an outside of the case. The pair of terminals are respectively connected to the lid and the case, and the pair of electrodes are wound interposing the separators therebetween, and the strip-like portions are located on both end surfaces. The electrochemical device has high volume density and low internal resistance and it can be manufactured in short time.

Abstract: A process for producing a carbon material for an electric double layer capacitor electrode, which comprises:

Abstract: The invention relates to a non-aqueous electric double layer capacitor which has a high power output, a high energy density, and has excellent voltage-retention properties.

Abstract: An internet moving image linking system is provided that can reduce link information necessary for the related information in a moving image linkage. The internet moving image linking system includes a server and a user terminal. The server has means for judging the presence or absence of a link destination based on point time information and point coordinate information each transmitted from the user terminal.

Abstract: An electric double layer capacitor comprising a positive electrode assembly and a negative electrode assembly, each electrode assembly having a porous layer comprising a carbonaceous powder and a fluorine-containing polymer formed on at least one side of an aluminum foil current collector, the positive electrode and the negative electrode being disposed so that the porous layer of the positive electrode assembly and the porous layer of the negative electrode assembly face each other with a separator interposed therebetween to form an element, the element being impregnated with a non-aqueous electrolyte and accommodated in a sealed container, wherein the thickness of the porous layer is from 80 to 200 &mgr;m, the thickness of the aluminum foil current collector is from 20 to 80 &mgr;m, the thickness of the separator is from 30 to 170 &mgr;m, and the density of the porous layer is from 0.50 to 0.80 g/cm3.

Abstract: An electric double layer capacitor having an element impregnated with a non-aqueous electrolyte, said element comprising positive and negative electrodes made of carbonaceous electrodes, and a separator interposed between the electrodes, wherein said separator is made of paper prepared to contain at least 50 wt % of fibers obtained by beating regenerated cellulose fibers.

Abstract: An electric double layer capacitor including a positive electrode assembly and a negative electrode assembly, each electrode assembly having a porous layer including a carbonaceous powder and a fluorine-containing polymer formed on at least one side of an aluminum foil current collector, the positive electrode and the negative electrode being disposed so that the porous layer of the positive electrode assembly and the porous layer of the negative electrode assembly face each other with a separator interposed therebetween to form an element, the element being impregnated with a non-aqueous electrolyte and accommodated in a sealed container, wherein the thickness of the porous layer is from 80 to 200 &mgr;m, the thickness of the aluminum foil current collector is from 20 to 80 &mgr;m, the thickness of the separator is from 30 to 170 &mgr;m, and the density of the porous layer is from 0.50 to 0.80 g/cm3.

Abstract: An electric double layer capacitor having an element impregnated with a non-aqueous electrolyte, said element comprising positive and negative electrodes made of carbonaceous electrodes, and a separator interposed between the electrodes, wherein said separator is made of paper prepared to contain at least 50 wt % of fibers obtained by beating regenerated cellulose fibers.

Abstract: An electric double layer capacitor having an element impregnated with a non-aqueous electrolyte, the element comprising positive and negative electrodes made of carbonaceous electrodes, and a separator interposed between the electrodes, wherein the separator is made of paper prepared to contain at least 50 wt % of fibers obtained by beating regenerated cellulose fibers.

Abstract: An electrode for an electric double layer capacitor including a carbonaceous material and a binder, wherein the binder includes a polytetrafluoroethylene which is made from a fine powder of polytetrafluoroethylene having a specific gravity of at most 2.18 as defined in JIS-K6891.

Abstract: An electric double layer capacitor comprises a first electrode 31 comprising a belt-like electricity collecting material 31a having both surfaces on which electrode layers 31b, 31c are formed leaving belt-like portions in a side of the belt-like electricity collecting material 31a along its longitudinal direction, a second electrode 32 having the same structure as the first electrode 31, belt-like separators 33a, 33b to electrically insulate the first and second electrodes 31, 32, a post-like winding core 40 on which the first and second electrodes 31, 32 and the separators 33a, 33b are wound to thereby form a cylindrically wound element 50, a first electricity collecting plate 72 in contact with the belt-like portion 31ax, a second electricity collecting plate 62 in contact with the belt-like portion 31ax, wherein the belt-like portions 31ax, 32ax are located at opposing positions in the wound element 50, both ends of the winding core 40 are respectively in contact with the first and second electricity colle

Abstract: An electric double layer capacitor having electrode terminals 70a, 70′a which are attached to a metallic cover plate 65 in an electrically insulated state wherein each of the electrode terminals 70a, 70′a has an engaging plate 76 formed integrally with a shaft portion of the electrode terminal so as to engage with an electrically insulating plate 80 disposed inside the metallic cover plate 65 whereby a rotating motion of the terminal with respect to its axial direction is prevented.

Abstract: An electrode assembly for an electric double layer capacitor, including a current collector made of an aluminum foil, and an electrode including a carbonaceous material having a specific surface area of at least 500 m2/g and a binder, bonded on at least one side of the current collector, wherein the aluminum foil has a roughened layer having a thickness of from 0.5 to 5 &mgr;m on the surface of the side bonded to the electrode and has a breaking energy of at least 3 kg·mm with a dumbbell specimen of No. 1 form as stipulated in JIS K6301.

Abstract: An electric double layer capacitor having a non-aqueous electrolyte impregnated to a capacitor element having a separator placed between a positive electrode and a negative electrode, each being a carbonaceous electrode, wherein the separator includes a plurality of sheets, and at least one of the plurality of sheets is a cellulose paper having a thickness of from 20 to 60 .mu.m and a density of from 0.30 to 0.55 g/cm.sup.3.

Abstract: An electric double layer capacitor is provided that includes a positive electrode having a currect collector combined with a polarizable electrode material composed mainly of activated carbon, a negative electrode having a current collector of porous metal incapable of forming an alloy with lithium, combined with a carbonaceous material having lithium ions occluded by a chemical method or an electrochemical method to a carbon material capable of occluding and releasing a lithium ions, and a nonaqueous electrolyte containing a lithium salt. The negative electrode is supported on a current collector of porous metal having a thickness of 0.1 to 1 mm and a porosity of 5 to 80%.

Abstract: A non-aqueous electrolyte type secondary battery comprises a negative electrode capable of occluding and releasing lithium, a positive electrode capable of occluding and releasing lithium, a non-aqueous electrolyte which contains a lithium salt, and a container for accommodating the negative electrode, the positive electrode, and the electrolyte. The negative electrode is formed by pressing a foam metal or a fibrous sintered metal which contains nickel as a principal component thereof and which is filled with a mixture of a binder and a carbon material capable of occluding and releasing lithium. The negative electrode has a thickness of not less than 0.1 mm and a porosity of 20 to 50%.