46results about How to "High electrode strength" patented technology

The present invention relates to a negative electrode material for a lithium battery characterized by comprising a carbonaceous negative electrode active substance having a specific surface area of 1 m2 / g or more, a binder formed of styrene-butadiene rubber and a carbon fiber having a fiber diameter of 1 to 1,000 nm; and to a lithium battery using the negative electrode material, which has excellent characteristics, i.e., low electrode resistance, high electrode strength, excellent electrolytic solution permeability, high energy density, and good high-speed charging / discharging performance. The negative electrode material contains carbon fiber in the amount of 0.05 to 20 mass % and the binder formed of styrene-butadiene rubber in 0.1 to 6.0 mass %, and may further contain a thickner such as carboxymethyl cellulose in the amount of 0.3 to 3 mass %.

A reservoir electrode assembly of the present invention for an iontophoretic drug delivery device includes an electrode and a hydrophilic reservoir situated in electrically conductive relation to the electrode. The hydrophilic reservoir is formed from a bibulous hydrophilic cross-linked polymeric material having a first surface and a second surface that is adhesively adherent to the electrode. The first surface of the polymeric material is releasably adhesively adherent when applied to an area of a patient's skin. The polymeric material has a cohesive strength forms an adhesive bond with a bond strength between the second surface of the polymeric material to the electrode that is greater than the cohesive strength of the polymeric material. Additionally, an adhesive bond strength of the first surface of the polymeric material to the applied area of the patient is less than the cohesive strength of the polymeric material so that upon removal of the reservoir assembly of the invention from the applied area of the patient, substantially no polymeric material remains on the applied area and the hydrophilic reservoir remains substantially intact and adhesively adherent to the electrode.

The invention discloses a nano loaded titanium-based electric catalytic film comprising a conductive microporous separating titanium film matrix and a catalytic coating. Furthermore, the invention also discloses a preparation method of the nano loaded titanium-based electric catalytic film, which comprises the following steps of: (1) preprocessing the titanium film matrix by sand blasting, alkali washing, and acid etching: soaking the matrix after sand blasting in an NaOH solution for 0.5 to 2h, then processing for 1 to 2h in an oxalic acid solution with the mass percent concentration of 10 percent after washing to a neutral state, washing with water and drying at 100 to 120 DEG C; and (2) preparing and loading a catalytic coating: preparing the catalytic coating by adopting a sol-gel method, a thermal decomposition method, an electrodeposition method or a chemical vapor deposition method and loading at the surface of the titanium film matrix and in a hole. Furthermore, the invention also discloses a film reactor comprising the nano loaded titanium-based electric catalytic film. According to the nano loaded titanium-based electric catalytic film, the defects on material strength, range limitation of working voltage, catalytic oxidation efficacy and the like in the prior art are solved.

A reinforcing material-having functional sheet of a sheet-like functional material including a functional powder and a binder resin and, laminated thereon, a reinforcing sheet comprising a woven fabric or a non-woven fabric, which are bonded, wherein the basis weight of the reinforcing sheet, the fiber diameter of the fiber constituting the reinforcing sheet and the functional sheet thickness are in specific ranges. A sheet-like electrode for electric double layer capacitors, which electrode comprises a sheet-like electrode of carbon fine powder and a fluorine-containing polymer resin and, laminated thereon, the reinforcing sheet, and an electric double layer capacitor having this electrode. The functional sheet has strength and no elimination of the functional material powder, and also efficiently exhibits high functional properties. The sheet electrode can efficiently prepare electric double layer capacitors having strength, remarkably low internal resistance, slight lowering of charging and discharging capabilities, excellent durability and long lifetime.

In a temperature sensor (1), a pair of electrode wires (25) of a thermistor element (21) are formed of a material prepared by adding strontium to platinum or a platinum alloy and without addition of zirconia or a like oxide. Rear end portions of the electrode wires (25) formed of the above-mentioned material and front end portions of sheath core wires (3) are laser-welded to one another in an overlapping condition.

A reinforcing material-having functional sheet which comprises a sheet-like functional material comprising a functional powder and a binder resin and, laminated thereon, a reinforcing sheet comprising a woven fabric or a non-woven fabric, which are bonded, wherein the basis weight of the reinforcing sheet, the fiber diameter of the fiber constituting the reinforcing sheet and the functional sheet thickness are in specific ranges. A sheet-like electrode for electric double layer capacitors which electrode comprises a sheet-like electrode of carbon fine powder and a fluorine-containing polymer resin and, laminated thereon, the reinforcing sheet, and an electric double layer capacitor having this electrode. The functional sheet has strength and no elimination of the functional material powder, and also efficiently exhibits high functional properties. The sheet electrode can efficiently prepare electric double layer capacitors having strength, remarkably low internal resistance, slight lowering of charging and discharging capabilities, excellent durability and long lifetime.

A method of producing an active material for a lithium secondary battery, by which impurities causing problems in synthesizing an active material for a lithium secondary battery, including a lithium transition metal oxyanion compound are removed efficiently and enhancement of an energy density is realized, is provided. By cleaning the active material for a lithium secondary battery, including a lithium transition metal oxyanion compound, with a pH buffer solution, for example, it is possible to efficiently remove just only impurities such as Li3PO4 or Li2CO3, or a substance, other than LiFePO4, in which the valence of Fe is bivalent such as FeSO4, FeO or Fe3(PO4)2 without dissolving Fe of LiFePO4.

A manufacturing method for an all-solid-state battery including a positive electrode layer, a negative electrode layer, a solid electrolyte layer, a positive electrode current collector layer, and a negative electrode current collector layer is provided. At least one of the positive and negative electrode layers is an electrode layer containing a sulfide-based solid electrolyte and having a first main surface and a second main surface. The manufacturing method includes: shielding at least a central portion of the first main surface and at least a central portion of the second main surface from an ambient atmosphere; and exposing an outer peripheral portion of the electrode layer to an atmosphere having a dew-point temperature of −30° C. or higher, with at least the central portion of the first main surface and at least the central portion of the second main surface shielded from the atmosphere.

A modified negative electrode material, negative electrode and cell of lithium ion cell, the negative electrode material made of modified quasi one dimension nano carbon material with average diameter of 1nm-500nm which is 0.1 %-50 % of total weight of negative electrode material selected from natural graphite, intermediate phase char microsphere, amorphous carbon, hard carbon, pyrolytic carbon, petroleum coke, asphalt base carbon fiber etc carbon material, and one or plurality of kinds of stannum base and silicon base material. Said invention raises the service life, charge capacity and discharge rate and effectively improves the performance of lithium ion cell.

A semiconductor device includes capacitors formed on the surface of an interlayer insulating film in connection with capacitive contact plug, wherein capacitors are constituted of base-side lower electrode films having hollow-pillar shapes, metal plugs embedded in hollows of base-side lower electrode films, and top-side lower electrode films having hollow-pillar shapes engaged with the upper portions of the hollows as well as dielectric films and upper electrode films which are sequentially laminated so as to cover the peripheral surfaces of the base-side and top-side lower electrode films and the interior surfaces of the top-side lower electrode films. Side walls are further formed to connect together the adjacent base-side lower electrode films. Thus, it is possible to control the aspect ratio of a capacitor hole for embedding the metal plug from being excessively increased, and it is possible to increase the capacitive electrode area of each capacitor.

The invention relates to a method for preparing high-tungsten-content tungsten-zirconium alloy. The method comprises the following steps that (1) powder is prepared and mixed, tungsten powder and zirconium-titanium powder are mixed and then pelletized, and the proportion, by weight, of the added tungsten powder is 50%-70%; (2) pressing and sintering are carried out, pressing is carried out through a cold isostatic pressing molding press, and pressure is relieved in a graded mode; degreasing sintering is carried out through a high-vacuum resistance furnace, peeling is carried out through finish turning, and a consumable electrode is obtained; and (3) consumable electric arc melting is carried out for at least one time to obtain the high-tungsten-content tungsten-zirconium alloy with uniform ingredients. The consumable electrode is prepared through powder metallurgy, the strength of the electrode is high, and the phenomenon of slag falling is avoided in smelting; the distribution state of tungsten and other elements in the electrode is well improved through powder sintering, the uniformity of ingredients and the structure of cast ingots is facilitated, and therefore the smelted-state tungsten-zirconium alloy with the tungsten content reaching up to 70% is obtained. In addition, through the consumable smelting process, the alloy can be purified, inclusions are eliminated, and the density and the toughness of the alloy are further improved compared with powder-metallurgy-state alloy.

A solid oxide fuel cell having a fuel electrode, a solid electrolyte film, an air electrode, and a conductive current-collecting mesh bonded to an upper surface, opposite to a lower bonding surface with the solid electrolyte film, of the air electrode. Plural bonding portions that are bonded to the current-collecting mesh and plural non-bonding portions that are not bonded to the current-collecting mesh are present on the upper surface of the air electrode. In the air electrode, regions having a porosity smaller than a porosity of the other region are respectively formed on the position in the middle of the thickness of the air electrode from each bonding portion. The average of the porosity of the dense portion is 20% or more and less than 35%, while the average of the porosity of the porous portion is 35% or more and less than 55%.

A hydrogen-absorbing alloy electrode for an alkaline secondary battery. The electrode is prepared by adding a transition metal salt to a paste comprising a hydrogen-absorbing alloy powder and binder. The electrode improves charge-discharge cycle performance and high rate discharge capacity at low temperature of an alkaline secondary battery.

A method for charging a lithium ion secondary battery including at least a positive electrode, a negative electrode provided with a negative electrode active material layer that includes carbon as a negative electrode active material, an electrolytic solution, and a sheathing material that encloses the positive electrode, the negative electrode and the electrolytic solution; the negative electrode active material layer including carboxymethyl cellulose and the electrolytic solution including an additive that can be decomposed at a predetermined voltage includes: preliminary charging including constant-current charging in which charging is performed at a fixed current value and, following the constant-current charging, constant-voltage charging in which charging is performed at a fixed voltage; degassing in which gas is removed from within the sheathing material after the preliminary charging; and main charging that follows the degassing in which the lithium ion secondary battery is charged. The fixed voltage during the constant-voltage charging is at least 3.3 V per cell.

The battery is constituted to satisfy B / A≧0.57, wherein “A” represents a width of an active material region and “B” represents a width of each electrode terminal.

An all-solid-state battery that includes a positive electrode layer, a negative electrode layer and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer. At least one electrode layer selected from the positive electrode layer and the negative electrode layer contains an electrode active material, a sulfide solid electrolyte and fibrous carbon. The fibrous carbon includes at least fibrous carbon components that extend in the direction of lamination of the positive electrode layer, the solid electrolyte layer and the negative electrode layer.

An electrode film with a high tensile strength and a low electrical resistance is fabricated by using conductive flakes to strengthen polymer stabilized particle electrode. The new compositions and low energy methods are disclosed in this invention. The method includes mixing and blending the particulate materials and fibrilltable polymers with conductive flakes into a paste, fibrillating the polymers, and extruding and rolling the paste into self-supported electrode films.

A wire screen aided laser soldering technology for making multi-layer heterogeneous composite side electrode of element includes coating soldering material on the side of element, putting metallic wire screen in the soldering material, heating by laser beams to fuse them, and cooling to form the side electrode of element. Its advantages include good connection between layers, local heating, no damage to element, high electrode strength, and high machining efficiency.

A method of producing an active material for a lithium secondary battery, by which impurities causing problems in synthesizing an active material for a lithium secondary battery, including a lithium transition metal oxyanion compound are removed efficiently and enhancement of an energy density is realized, is provided. By cleaning the active material for a lithium secondary battery, including a lithium transition metal oxyanion compound, with a pH buffer solution, for example, it is possible to efficiently remove just only impurities such as Li3PO4 or Li2CO3, or a substance, other than LiFePO4, in which the valence of Fe is bivalent such as FeSO4, FeO or Fe3(PO4)2 without dissolving Fe of LiFePO4.

Provided is a novel negative electrode for nonaqueous electrolyte secondary batteries, which is capable of improving cycle characteristics and is also capable of suppressing aggregation of active material particles in a slurry. The negative electrode active material for nonaqueous electrolyte secondary batteries, which contains silicon and has a D50 of 0.1 μm to 5 μm, and the amount of water measured at 120° C. to 300° C. by the Karl-Fischer method (referred to as “amount of water”) per specific surface area (referred to as “CS”), that is, the amount of water / CS, of 0.1 to 80 ppm / (m2 / cc).

A lithium-air storage battery having at least one electrochemical cell witha negative electrode, which is an air electrode;a positive electrode, which comprises a material for insertion of lithium; andan organic electrolyte conducting lithium ions, positioned between the negative electrode and positive electrode, the electrolyte not degrading, when it is subject to a voltage ranging from 3V to 5.5V expressed relatively to the Li+ / Li pair and the storage battery having a potential difference between the electrochemical potential of the positive electrode and the electrochemical potential of the negative electrode greater than 4.5V expressed relatively to the Li+ / Li pair.

An electrode and an electrochemical device using the same are provided in which excellent effects can be obtained that the filling density of the active material can be increased and the energy density can be improved. The electrode includes at least an active material, a conductive auxiliary agent, and a fluorine containing binder for binding the active material to the conductive auxiliary agent. In this electrode, a fluorine ratio Y and a filling content X of the active material in the electrode (90 wt. %≦X≦97.5 wt. %) satisfy the relationship of Y≧0.046 X−3.905. The fluorine ratio Y is a ratio of a fluorine content B on a minimum strength surface inside the electrode to a fluorine content A on the surface of the electrode (Y=B / A).

The instant disclosure relates to a method for manufacturing high-strength structural stacked capacitor. The novel feature of the instant disclosure is forming a part of upper electrode layer to cover the first / outer surface of each of the lower electrode layers before removing the sacrificial layer, and forming another part of upper electrode layer to cover the second / inner surface of each of the lower electrode layers after removing the sacrificial layer. Hence, the structure strength of the lower electrode layer in all process steps has been improved.

An electrode joint is presented, the joint including two joined graphite electrodes and having a joint strengthening ring interposed between the electrodes, the joint strengthening ring composed of a compressible.