30 results about "Electrode gel" patented technology

An electrode assembly for neuro-cranial stimulation includes an electrode, a conductive gel, and an adapter including an interior compartment for positioning the electrode relative to the adapter and for receiving and retaining the conductive gel. The conductive gel contacts the electrode along an electrode-gel interface. An orifice at one end of the interior compartment and adjacent to a positioning surface of the adapter for positioning the electrode assembly against a skin surface of a user enables the conductive gel is able to contact the skin surface of the user to define a gel-skin interface, such that a minimum distance between the electrode-gel interface and the gel-skin interface is maintained between 0.25 cm and 1.3 cm. An electrode assembly mounting apparatus is provided for adjustably positioning a plurality of electrode assemblies against target positions on the cranium.

External pacemaker systems and methods deliver pacing waveforms that minimize hydrolysis of the electrode gel. Compensating pulses are interleaved with the pacing pulses, with a polarity and duration that balance the net charge at the electrode locations. The compensating pulses are preferably rectangular for continuous pacing, and decay individually for on-demand pacing.

An electrode assembly for neuro-cranial stimulation includes an electrode, a conductive gel, and an adapter including an interior compartment for positioning the electrode relative to the adapter and for receiving and retaining the conductive gel. The conductive gel contacts the electrode along an electrode-gel interface. An orifice at one end of the interior compartment and adjacent to a positioning surface of the adapter for positioning the electrode assembly against a skin surface of a user enables the conductive gel is able to contact the skin surface of the user to define a gel-skin interface, such that a minimum distance between the electrode-gel interface and the gel-skin interface is maintained between 0.25 cm and 1.3 cm. An electrode assembly mounting apparatus is provided for adjustably positioning a plurality of electrode assemblies against target positions on the cranium.

The present invention relates to a metal-air cell charging apparatus, to a metal-air cell assembly, and to a metal-air cell charging system comprising same. The present invention provides a metal-air cell charging apparatus for charging a metal-air cell assembly including a secondary metal-air cell having a negative electrode gel, and a case for accommodating the secondary metal-air cell therein, wherein the metal-air cell charging apparatus comprises: a charging unit which generates, using an external power source, power to be supplied to the metal-air cell assembly, and supplies the thus-generated power to the metal-air cell assembly; and a humidifying air supply unit which generates humidifying air containing a predetermined amount of moisture, and supplies the humidifying air to the interior of the case via a humidifying air supply port connected to the metal-air cell assembly.

The invention belongs to the field of preparation of a lithium battery negative electrode material, and in particular relates to a preparation method of a composite lithium battery negative electrodematerial based on copper oxide. For the problem that the performance of a prepared battery is unstable due to poor performance of the existing lithium battery negative electrode material, the following scheme is proposed. The method comprises the steps that stirring and ball milling are carried out on copper oxide powder and graphite powder, drying is carried out; the mixture is carbonized, and aweighed conductive agent and binder are added into the mixture for mixing; relevant raw materials are added into a thickener solution and mixed to acquire a mixture B; and a mixture A, the mixture B and weighed polyvinylidene fluoride are mixed and stirred to aquire a negative electrode gel-like mixture. The preparation method has the advantages of simple preparation process, low preparation cost,sufficient mixing and agglomeration of various components, full effect of each component and improved performance of the negative electrode material. The battery made of the negative electrode material has the advantages of stable performance, high energy density and the like.

The invention discloses an ink direct-writing 3D printing conductive polymer-based miniature supercapacitor and a preparation method thereof, and belongs to the technical field of electrochemical energy storage. The miniature supercapacitor comprises a substrate, a current collector, an interdigital electrode, a gel electrolyte and a packaging layer, and the electrode material is PEDOT: PSS / MXene composite hydrogel. PEDOT: PSS is subjected to phase separation through ethylene glycol, a conductive PEDOT phase is formed, and the conductivity of the material is improved. Through electrostatic interaction of MXene and PEDOT: PSS, aggregation is prevented, and it is guaranteed that the ink has excellent printability; meanwhile, the loose and porous structure is beneficial to transmission of electrolyte ions, and excellent electrochemical performance is obtained. The conductive polymer-based miniature supercapacitor has high area capacitance, rate capability, energy density, power density and excellent low temperature resistance, and has huge potential in the field of flexible energy storage.

The invention concerns a method for preparing an electrode-gel electrolyte assembly made from porous carbon material comprising radical trapping sites comprising: - a step of forming a link between the radical trapping sites of the carbon material (1) and functionalising molecules (5), - a step of preparing a solution (S) comprising at least one monofunctional monomer and at least one polyfunctional monomer, one ion-conductive electrolyte and one radical initiator, - a step of impregnating the solution (S) of said monomers into the pores (2, 3, 4) of the carbon material (1), and - a step of in situ radical polymerisation of said monomers.

The invention provides a lithium ion battery, its gel electrolyte and a preparation method thereof. The lithium-ion battery gel electrolyte is used to be spaced between the positive pole piece and the negative pole piece, including: a positive gel electrolyte layer, one side of which is adjacent to the positive pole piece, and the positive pole piece has a high potential positive electrode active material, The oxidation potential of the positive electrode gel electrolyte layer is above 4.5V (vs Li / Li+); the negative electrode gel electrolyte layer, one side is adjacent to the negative electrode sheet and the other side is connected to the other side of the positive electrode gel electrolyte layer, and the negative electrode sheet It has a low-potential negative electrode active material, and the reduction potential of the negative electrode gel electrolyte layer is below 0.2V (vs Li / Li+). The lithium ion battery gel electrolyte provided by the invention can improve the compatibility between the gel electrolyte and positive and negative electrodes, and can effectively improve the working voltage and cycle life of the lithium ion battery.

The invention belongs to the field of preparation of a lithium battery negative electrode material, and in particular relates to a preparation method of a composite lithium battery negative electrodematerial based on copper oxide. For the problem that the performance of a prepared battery is unstable due to poor performance of the existing lithium battery negative electrode material, the following scheme is proposed. The method comprises the steps that stirring and ball milling are carried out on copper oxide powder and graphite powder, drying is carried out; the mixture is carbonized, and aweighed conductive agent and binder are added into the mixture for mixing; relevant raw materials are added into a thickener solution and mixed to acquire a mixture B; and a mixture A, the mixture B and weighed polyvinylidene fluoride are mixed and stirred to aquire a negative electrode gel-like mixture. The preparation method has the advantages of simple preparation process, low preparation cost,sufficient mixing and agglomeration of various components, full effect of each component and improved performance of the negative electrode material. The battery made of the negative electrode material has the advantages of stable performance, high energy density and the like.

In a cylindrical alkaline battery (10) which uses a mercury-free alloy with zinc as the main ingredient as an active material of its anode gel (18) and copper or an alloy with copper as the main ingredient as its anode electron collector (25), the surface of the anode electron collector (25) is electroless-plated with Sn to form an electroless plate film (251) of 0.05 to 0.095 m in thickness.To improve the liquid leakage resistance, especially liquid leakage resistance at over discharge, of cylindrical alkaline battery in which an alloy composed mainly of mercury-free zinc is used as an active material of negative electrode gel. [MEANS FOR SOLVING PROBLEMS] There is provided cylindrical alkaline battery (10) comprising negative electrode gel (18) in which an alloy composed mainly of mercury-free zinc is used as an active material and negative electrode current collector (25) constituted of copper or an alloy composed mainly of copper, wherein an electroless plating of Sn is applied to the surface of the negative electrode current collector (25), the electroless plating (251) having a thickness of 0.05 to 0.095 m.

The invention relates to a high-energy gel static vanadium battery, which uses a positive electrode gel state electrolyte and a negative electrode gel state electrolyte. The concentration range of the active material is between 3.0-7.0M, and the acidity range of the sulfuric acid in the positive gel electrolyte is 3.0-6.0M; the concentration range of the vanadium active material in the negative gel electrolyte is 3.0-7.0M, and the negative gel electrolyte The sulfuric acid concentration range of the liquid is 3.0-5.7M, wherein, the positive electrode gel electrolyte contains 1-10wt% gelling agent, and the negative electrode gel state electrolyte contains 1-5wt% gelling agent. The invention improves the energy density of the battery, improves the crystallization phenomenon of the electrolyte, relieves the osmotic pressure difference between the positive and negative electrodes, and prolongs the life of the battery.

An electrode assembly includes a first surface to be placed adjacent a person's skin and a second surface including a plurality of reservoirs of conductive gel. The plurality of reservoirs of conductive gel are disposed on sections of the electrode assembly that are at least partially physically separated and may move at least partially independently of one another to conform to contours of a body of a patient. The electrode assembly is configured to dispense an amount of the electrically conductive gel onto the first surface in response to an activation signal and to provide for a defibrillating shock to be applied to the patient through the amount of the electrically conductive gel.

A defibrillator electrode (10) and enclosure (23, 24) are described in which the electrodes are sealed to the inside of a rigid enclosure (23, 24). The enclosure is hinged to open and expose the electrodes for deployment. The electrode gel is sealed against moisture loss between the moisture impervious electrode backing and the inner surface of the enclosure. The enclosure may further include an electrical circuit for electrode self-testing, the circuit being broken when the enclosure is opened.

The invention discloses an alkaline battery negative electrode gel preparation method which specifically comprises the following steps: 1) under the protection of nitrogen, adding unsaturated carboxylic acid monomer, organic solvent and dispersing agents to a reactor, stirring the mixture and heating the mixture to the temperature of 55-80 DEG C; 2) adding a solution comprising an initiator and a solution comprising a cross-linking agent to a reaction system in the step 1) in a dropping manner, and conducting reacting for 2-10 hours; and 3) after the reaction is finished, carrying out suction filtration and drying, and thus the alkaline battery negative electrode gel is obtained. The obtained alkaline battery negative electrode gel is uniform in crosslinking. Meanwhile, the invention also provides the alkaline battery negative electrode gel obtained by using the preparation method. When the alkaline battery negative electrode gel is applied to the negative electrode of an alkaline battery, the obtained gel negative electrode suspension zinc powder is strong in capability and good in impact resistance of the alkaline battery. Meanwhile, by using the alkaline battery negative electrode gel, the production process of the battery is allowed to be simper, and the battery processing difficulty is reduced.

The present invention provides a thickener for alkaline batteries, and an alkaline battery using the thickener in negative electrode gel. The ratio (N1h / N12h) of the gel viscosity after 1 hour (N1h) to the gel viscosity (N12h) after 12 hours (N1h / N12h) of the thickener was 0.7 to 1.3. Wherein, the gel viscosity is the gel composed of 2.0 parts by weight of thickener, 200 parts by weight of zinc powder and 100 parts by weight of 37% by weight potassium hydroxide aqueous solution according to JIS K7117-1:1999 Measured viscosity at 40°C; an alkaline battery using the thickener of the present invention can be an alkaline battery in which long-term discharge properties (discharge amount and discharge time) are maintained and impact resistance is improved.

The present invention relates to a metal-air cell charging apparatus, to a metal-air cell assembly, and to a metal-air cell charging system comprising same. The present invention provides a metal-air cell charging apparatus for charging a metal-air cell assembly including a secondary metal-air cell having a negative electrode gel, and a case for accommodating the secondary metal-air cell therein, wherein the metal-air cell charging apparatus comprises: a charging unit which generates, using an external power source, power to be supplied to the metal-air cell assembly, and supplies the thus-generated power to the metal-air cell assembly; and a humidifying air supply unit which generates humidifying air containing a predetermined amount of moisture, and supplies the humidifying air to the interior of the case via a humidifying air supply port connected to the metal-air cell assembly.

The invention discloses a shower electrode based evoked potential detector, which comprises an electrode fixing device for fixing electrodes to a human head. At least one shower electrode in contact with scalp is mounted on the electrode fixing device and is connected with a receiving device through a transmission cable. The area of contact of the electrodes of the detector with human scalp can be increased, the detector is easier to contact with the scalp through human hair, the electrodes are guaranteed to stably contact with the human scalp through a plurality of contact teeth, impedance reduction and signal quality improvement are achieved by the aid of circular electrodes compared with the shower electrodes of the detector, no electrode gel is not needed, and accordingly service cost is reduced, use convenience is improved and the scalp cannot be dirtied after detection. Noninvasive detection can be achieved by the aid of the shower electrodes compared with pin electrodes, and a user feels no pain when using the detector.

An all-solid-state continuous fiber lithium-ion battery structure and its 3D printing forming method. The concentric multi-layer composite single-bundle lithium-ion battery is formed by 3D printing. The innermost layer of the concentric multi-layer composite single-bundle lithium-ion battery is a metal wire and a continuous fiber. Composite negative electrode composed of fibers, the outer surface of the composite negative electrode is an insulating solid electrolyte layer, the outer surface of the solid electrolyte layer is a conductive positive electrode, and the outer surface of the positive electrode is a viscous insulating packaging layer; the 3D printing method is to prepare metal wire and continuous fiber first. The composite single-bundle is corroded and dried, and then the positive electrode gel is wrapped to prepare a concentric multi-layer composite single-bundle lithium-ion battery. According to the printing method of continuous fiber composite materials, a lithium-ion battery of the desired shape is obtained; in the concentric composite single-bundle lithium-ion battery The negative electrode and the positive electrode of the ion battery are distributed to lead out a wire to obtain an all-solid continuous carbon fiber lithium ion battery; the invention has low cost and high efficiency, and can manufacture composite material parts with complex shapes.