111 results about "Gel electrode" patented technology

The invention discloses a bionic bimodal hydrogel-based triboelectricity-super-capacitance sensor and a preparation method of the bionic bimodal hydrogel-based triboelectricity-super-capacitance sensor. A hydrogel-based sensor high-charge sensitive layer is used as a triboelectric layer, a flexible hydrogel-based high-conductivity hydrogel electrode layer is used as an upper electrode layer, a hydrogel-based sensor elastic spacing layer, a hydrogel-based sensor dielectric layer is used as an ion conductive layer, and the flexible hydrogel-based high-conductivity hydrogel electrode layer is used as a lower electrode layer. An integrated multi-layer device structure is stacked from top to bottom; a silver wire is led out from each of the two layers of flexible hydrogel-based high-conductivity hydrogel electrodes, and the bionic bimodal hydrogel-based triboelectricity-super-capacitance sensor is obtained. The sensor integrates two sensing mechanisms of triboelectricity and a super capacitor, can detect dynamic and static pressure at the same time, has the advantages of high sensitivity, wide detection range, quick response and the like, and is expected to be widely applied to the fields of human-computer interaction, robot sensing and the like.

The invention relates to the technical field of photoelectrocatalysis materials, in particular to a photoelectrocatalysis material electrode, a preparation method and application. The electrode is prepared by the method. The method comprises the following steps: preparing cellulose nanofiber hydrogel doped with titanium black; after the cellulose nanofiber hydrogel doped with the titanium black is subjected to first pretreatment, titanium strips subjected to second pretreatment are respectively pasted on the front surface and the back surface of one end of the cellulose nanofiber hydrogel doped with the titanium black to obtain a cellulose nanofiber hydrogel electrode plate doped with the titanium black; the part, located below the titanium strip, of the electrode plate is immersed in an MOFs dispersion solution, loading treatment is conducted under stirring, and the double-three-dimensional-structure photoelectrocatalysis material electrode is obtained. The application refers to application of the electrode in degradation of tetracycline wastewater. The problems that an existing photoelectrode is low in reaction rate for tetracycline antibiotics and titanium black powder and MOFs powder are prone to loss can be solved.

The invention discloses gelatin / PVA (Polyvinyl Alcohol)-based double-network structure hydrogel, a flexible hydrogel electrode, a hydrogel-TENG sensor and a preparation method. The gelatin / polyvinyl alcohol-based double-network structure hydrogel with high flexibility, transparency, adhesion, self-healing capability, degradability and biocompatibility is prepared by introducing functional components including glycerol, sodium chloride, citric acid and sodium citrate into gelatin and polyvinyl alcohol. According to the application, poly (3, 4-ethylenedioxythiophene)-polystyrene sulfonate, graphene and cobalt nano-porous carbon are respectively added into gelatin / polyvinyl alcohol-based hydrogel with a double-network structure, so that a flexible hydrogel electrode and a hydrogel-triboelectric sensor charge sensitive layer are respectively obtained; and the hydrogel-based flexible non-contact triboelectric sensor with biological friendliness is finally prepared by combining the hydrogel-based flexible non-contact triboelectric sensor with biological friendliness. The hydrogel-triboelectric sensor is expected to play a greater role in the fields of intelligent medical treatment, flexible electronic equipment, human-computer interaction and the like in the future.

The invention discloses a preparation method and application of a tough, anti-freezing and high-conductivity composite hydrogel electrode, and the method comprises the following steps: 1, adding nanocellulose CNF into deionized water to obtain a uniform dispersion solution; step 2, stirring at room temperature to dissolve to obtain a uniform and clear precursor solution; 3, rapidly stirring to obtain a mixed solution; and 4, adding N, N '-methylene bisacrylamide (MBA) and ammonium persulfate (APS) into the mixed solution prepared in the step 3, stirring for 15 minutes to obtain a hydrogel precursor solution, uniformly stirring, carrying out ultrasonic defoaming, putting into a drying oven, and reacting at 60 DEG C for 4 hours to prepare the tough, anti-freezing and high-conductivity hydrogel. The method has the beneficial effect that the conductivity of the hydrogel is enhanced. The method has the advantages of high sensitivity, high stability, wide detection range and the like. Weak physiological signals can be monitored, and the system can be used for muscle electricity monitoring, electrocardiogram monitoring or motion monitoring.

Apparatuses for use in applying TTFields are disclosed. An apparatus comprises an electrode subassembly including at least one electrode element having a skin-facing side and a skin-facing surface. The apparatus further includes a skin contact subassembly comprising a skin contact conductive adhesive or gel configured to contact skin of a subject. One of the electrode subassembly or the skin contact subassembly comprises an electrically conductive polymer layer, and the other of the electrode subassembly or the skin contact subassembly comprises a second conductive adhesive or gel. The electrically conductive polymer layer is disposed against, and removably coupled to, the second conductive adhesive or gel, thereby removably coupling the electrode subassembly to the skin contact subassembly so that the skin contact conductive adhesive or gel is electrically coupled to the at least one electrode element.

The invention provides an ultrathin temperature-sensitive hydrogel flexible electrode and a preparation method thereof, and belongs to the technical field of hydrogel electrodes. The preparation method comprises the following steps: mixing monomer acryloyl glycinamide and acrylic acid, and dissolving in deionized water to obtain a mixed solution A; adding a chemical cross-linking agent and a poly (3, 4-ethylenedioxythiophene)-poly (styrene sulfonate) solution into the mixed solution A to obtain a mixed solution B; adding sodium sulfate and tannic acid into the mixed solution B to obtain a prepolymerization solution; adding an initiator into the pre-polymerized solution to obtain a polymerized solution; the preparation method comprises the following steps: adding thermoplastic polyurethane particles into a mixed solution of N, N-dimethylformamide and tetrahydrofuran to form a precursor solution, and carrying out electrostatic spinning on the precursor solution to obtain a film matrix; and coating the polymerization solution on the surface of a thin film substrate, and packaging a conductive copper foil to obtain the ultrathin temperature-sensitive hydrogel flexible electrode. The mechanical property and the adhesion property of the flexible electrode are improved, and the adhesion strength can be dynamically adjusted by regulating and controlling the temperature.

The invention belongs to the technical field of wearable electronic devices, and particularly relates to a breathable liquid metal-fabric electrode with a durable interface and a preparation method of the breathable liquid metal-fabric electrode. Comprising the following steps that an interface modifier solution is added into liquid metal, and modified liquid metal slurry is obtained in an ice-bath ultrasonic mode; coating a fabric substrate with the modified liquid metal slurry, and drying at room temperature until the modified liquid metal slurry is cured to obtain an electrode precursor; and applying external force to the electrode precursor to obtain the liquid metal-fabric electrode. The liquid metal micro / nano particles are subjected to interface modification through the interface modifier, the interface modifier and the fabric substrate are subjected to interface interaction, the liquid metal is anchored to the fabric substrate, meanwhile, the modified liquid metal particles are promoted to be fused through external force, and a continuous conductive network is formed; the gel electrode shows excellent tolerance under water washing, air exposure and mechanical deformation, and has good skin compatibility and interface impedance lower than that of a commercial gel electrode.

A high-density electromyographic sensor array, an acquisition system, and preparation and gesture recognition methods. The arrangement of sensors is convenient and flexible, and a high-density 64-lead electromyographic sensor array is adopted, without relying on a gel electrode patch, so that the arrangement of the sensors is more convenient. The high-density electromyographic sensor array is simple and convenient to prepare and suitable for rehabilitation, and adopts specific materials which are simple and convenient to prepare and suitable for rehabilitation application, thereby avoiding the complexity of a PDMS material. Acquisition hardware is cost-effective, so that a high-density electromyographic acquisition hardware system for large-scale application is provided, thereby achieving a low cost, and facilitating secondary development. A flexible wifi communication mode is adopted, as the wifi communication mode is more flexible than a traditional USB mode, thereby facilitating system deployment and data transmission. A gesture recognition algorithm is based on hybrid learning, and the gesture recognition accuracy is improved by means of the hybrid learning algorithm, so that a rehabilitation robot can respond to an action of a user in a more intelligent and personalized manner, thereby improving the rehabilitation effect.

The invention provides a temperature control reversible phase change whole brain acquisition and stimulation integrated gel electrode array and a preparation method thereof. The method comprises the following steps: constructing a 3D printing comb-shaped array, preparing a temperature control conductive gel coating and a temperature response flexible electrode, and forming an acquisition and stimulation integrated electrode array structure. By regulating and controlling the proportion and concentration of gelatin to PEDOT: PSS, a conductive gel layer which can flow among hair and is formed in situ is formed at the tail end of the electrode, so that the problems of hair compatibility, poor dynamic signal, complicated setting process and the like in long-term electroencephalogram monitoring are solved.

The application discloses a kind of hydrogel electrode with adhesion and anti-sweat characteristics and preparation method and application thereof, belong to flexible hydrogel sensing material technical field.The electrode is formed by dissolving acrylic acid, hydrophobic modified tannic acid, initiator, polyethyleneimine and conductive substance in deionized water to form a precursor solution, and is prepared by pouring into mould and then carrying out ultraviolet light polymerization.The hydrogel electrode prepared by the application has good mechanical strength, excellent skin adhesion, significant anti-sweat interference ability, high conductivity and low contact impedance.The electrode can be directly attached to the skin and used as a strain sensor or to collect various bioelectric signals, and has the comprehensive advantages of high stability, good detection accuracy, low interface impedance, excellent biocompatibility, easy-to-obtain material and simple process.

An electrode for an alkali metal ion secondary cell and its precursor composition with a polymer-electrolyte gel matrix phase, a dispersed phase comprising an electrochemically active material, and a conductive additive with a tubular carbon material as a majority component, preferably MWCNTs (multi-walled carbon nanotubes). The electrochemically active material may be a lithium transition metal oxide, preferably NMC. The electrode may be produced by processing the composition as a film or coating by thermal processing or extrusion. A method of manufacture and storage device are also described. The use of gel electrodes avoids the use of energetically expensive sacrificial solvents, and the use of tubular carbon improves electrochemical performance reducing the tortuosity values.

Disclosed is an electrode precursor composition suitable for preparing a gel electrode, the composition comprising an organic solvent, an alkali metal salt, an electrically insulating polymer, and a redox-active organic component, where the redox-active organic component is present at a smaller volume fraction than the electrically insulating polymer. The redox active organic component may be present in the electrode precursor composition in an amount of between 1 and 20 vol% based on the total volume of the electrode precursor composition. The redox-active organic component may be present in the electrode precursor composition in an amount of up to 8% by volume based on the total volume of the electrode precursor composition. The redox active organic component may be a redox active polymer.

This invention discloses a breathable, conductive hydrogel electrode, its preparation method, and its applications. The breathable, conductive hydrogel electrode comprises a porous fiber support structure and a hydrogel conductive network. The porous fiber support structure has a three-dimensional porous structure formed by interwoven porous fibers, each fiber possessing a three-dimensional interconnected channel structure formed by interconnected pores distributed on and within the porous fibers. The hydrogel conductive network is distributed on the surface and within the porous fiber support structure, forming a continuous ion conduction path within the electrode. The breathable, conductive hydrogel electrode provided by this invention has advantages such as high breathability, self-humidification, low impedance, and breathability, achieving high-fidelity, long-term acquisition of physiological signals such as electroencephalograms (EEG), electrocardiograms (ECG), and electromyograms (EMG). It can be widely used in electrophysiological signal monitoring, smart wearables, sleep analysis, and human-computer interaction.

The invention discloses an electrochemical method for loading adhesive macromolecules on the surface of an electrode and application, rapid and patterned loading of an adhesive layer can be realized by sequentially carrying out cyclic voltammetry and potentiostatic method, and the method has the characteristics of flexibility, simplicity and convenience in operation, wide application range and repeatability. According to the flexible array electrode modified by the electrochemical method provided by the invention, an adhesion layer is only obtained at a conductive part, so that the electrode has excellent adhesion performance and is more attached to the skin of a human body, and the stability of a skin-electrode interface is enhanced; when the electrode is attached to the skin for impedance testing, the skin interface impedance is lower than that of a commercial gel electrode, the monitored electrophysiological signals are stable and accurate, and meanwhile, short circuit and signal crosstalk can be effectively prevented due to the characteristic of the patterned load. The electrochemical method provided by the invention is used as a modification technology, is universal, simple and convenient for the electrophysiological sensor, and also has important significance for reducing the cost of wearable health monitoring equipment and improving the performance of the wearable health monitoring equipment.

The invention discloses a polyvinyl alcohol / silk fibroin peptide / phosphoric acid composite hydrogel electrode as well as a preparation method and application thereof. The method comprises the following steps: fully mixing a polyvinyl alcohol solution, a silk fibroin peptide solution, a phosphoric acid solution and glycerol to obtain a hydrogel pre-gel solution, pouring the hydrogel pre-gel solution into a mold, and carrying out freeze-thaw cycle to prepare the polyvinyl alcohol / silk fibroin peptide / phosphoric acid composite hydrogel electrode. The composite hydrogel electrode disclosed by the invention not only has excellent biocompatibility, mechanical property, conductivity, adhesion property and water retention capacity, but also can be used as a gel electrode which is simple to operate and comfortable to wear to be applied to acquisition of bioelectrical signals; the method has a wide application prospect in the fields of wearable equipment, medical diagnosis, electronic skin, man-machine interaction, soft robots and the like.

The invention discloses a portable idiopathic tremor myoelectricity feature extraction device which comprises an acquisition body, a hydrogel electrode and a signal display device. A hydrogel electrode is adopted to collect idiopathic tremor electromyographic signals, and the hydrogel electrode is made of an elastic material and can adapt to different curve surfaces. Meanwhile, water molecules on the surface of the hydrogel electrode and the skin surface have a good adsorption effect. Therefore, the stability and the accuracy of electromyographic signal transmission are ensured. Meanwhile, the hydrogel electrode is connected with the device in a magnetic attraction manner, so that the replaceability of the hydrogel is improved. The method is suitable for signal feature extraction of tremor electromyographic signals of an idiopathic tremor patient, facilitates real-time recording of idiopathic tremor signal features of the idiopathic tremor patient, and can provide a theoretical basis for treatment of the idiopathic tremor patient.

The present invention discloses an integrated multiphase hydrogel, and a preparation method and application thereof in flexible and stretchable supercapacitors. The integrated multiphase hydrogel of the present invention is formed by implanting semigel electrode into semigel electrolyte by injection or printing, wherein the electrolyte hydrogel is prepared by polyvinyl alcohol, phytic acid and sulfuric acid. The electrode hydrogel is prepared from heteropoly acid, polyvinyl alcohol, phytic acid, ammonium persulfate and aniline by heating and then freeze thawing. The hydrogel of the present invention can be directly used as anode and cathode of stretchable electrode of flexible and stretchable supercapacitor without any post-processing. The electrolyte hydrogel can be used as both stretchable electrolyte and elastic substrate. The prepared flexible and stretchable supercapacitor can maintain superior interfacial toughness, have excellent charging / discharging cycle stability, and have good capacitance retention under mechanical deformation conditions such as bending, twisting and stretching.

The application discloses a bimetallic organic gel electrode material suitable for wide power fluctuation and a preparation method and application thereof. The preparation method of the bimetallic organic gel electrode material comprises the following steps: dissolving transition metal nickel salt and transition metal cobalt salt in ethanol to obtain a transition metal salt mixed solution; under the atmosphere of nitrogen or inert gas, the transition metal salt mixed solution is added dropwise into a terephthalic acid mixed solution at 70-90 DEG C, and solvent thermal reaction is continuously carried out at 70-90 DEG C to obtain a colloidal suspension; centrifugation is carried out to obtain a precipitate; washing and vacuum drying are carried out to obtain the bimetallic organic gel electrode material. The bimetallic organic gel electrode material has excellent electrocatalytic hydrogen evolution and oxygen evolution activity, has a lower overpotential in the HER process in an alkaline environment, the lowest overpotential is 28 mV, and still has good stability under different large current densities, and has good electrochemical activity and wide power stability.

The application discloses a starfish-imitated tube foot array hydrogel electrode and a preparation method thereof. The bottom of the conductive hydrogel electrode is provided with a starfish-imitated tube foot array. A single starfish-imitated tube foot comprises a stem and a terminal biomimetic sucker. The outer side of the sucker is a circular table structure, and the inner side is a cavity composed of a hemisphere. The integrated tube foot microstructure of the electrode is obtained by laser cutting of the hydrogel. First, the inner cavity structure is cut. Then, the outer side of the biomimetic tube foot shape is cut. Finally, the single biomimetic tube foot is inserted into the block-shaped hydrogel to form an array. The preparation method of the conductive hydrogel electrode comprises the following steps: first, a prepolymer is synthesized; then, the prepolymer, cationic monomers and anionic monomers are polymerized to obtain a hydrogel with anti-swelling and stable and excellent conductive performance. The conductive hydrogel electrode has the self-adhesion and anti-swelling ability when working underwater, can be closely combined with human skin, reduces the electrode-skin impedance, and improves the quality of underwater electromyographic signal collection.

Disclosed is an electrode precursor composition suitable for preparing a gel electrode, the composition comprising an organic solvent, an alkali metal salt, and two or more polymers including at least an electrically insulating polymer and an electrically conductive polymer, where the electrically conductive polymer is present at a smaller volume fraction than the electrically insulating polymer. The conductive polymer may be present in the electrode precursor composition in an amount of between 1 and 20 vol% based on the total volume of the electrode precursor composition. The conductive polymer may be present in the electrode precursor composition in an amount of up to 8% by volume based on the total volume of the electrode precursor composition. The conductive polymer may be redox active.

The invention discloses a hydrogel-based non-invasive brain-computer interface electrode with non-uniform hardness and a preparation method of the hydrogel-based non-invasive brain-computer interface electrode, relates to the technical field of flexible electronic materials and devices, and can be used for data acquisition of electroencephalogram equipment and other flexible contact media for acquiring human electrophysiological signals, such as electromyographic signals, electrocardiosignals and the like. The cross-linking times mismatching strategy is adopted, different moduli at the two ends of the hydrogel electrode are achieved, the polyvinyl alcohol solution and the sodium alginate solution are directly mixed, freezing and thawing cycles of different times are carried out, and the electrode stability and wearing comfort are greatly improved. The hydrogel reduces the contact impedance through ionic conduction, and the impedance is lower than that of a commercial electrode. The hydrogel prepared on the basis of the method can be better prevented from slipping in an electrode clamp of an electroencephalogram cap, and meanwhile more comfortable and more stable contact is provided on an interface making contact with the skin. The process provides a better scheme for a series of human electrophysiological signal acquisition systems such as electroencephalogram signals and the like, and is of great significance to promotion of commercialization of non-invasive brain-computer interfaces.

The invention provides a preparation method and application of a gel electrode for electroencephalogram monitoring, and belongs to the technical field of electroencephalogram signal acquisition. The method is used for manufacturing electrodes for electroencephalogram signal detection. The method mainly comprises the following steps: sequentially dissolving 6H2O. MgCl2 and PVA in a mixed solution of EG and deionized water, stirring at a high temperature until PVA is completely dissolved to obtain a transparent mixed solution, then adding a conductive dispersion liquid, mixing to obtain a conductive gel solution, uniformly stirring, standing, repeatedly freezing and thawing, standing at room temperature to obtain a gel electrode main body, matching with a copper plate and a wire, connecting with the electrode main body, and carrying out electrostatic spinning to obtain the electrode. And obtaining the gel electrode. The prepared gel electrode does not need to use conductive paste, is convenient to operate, soft, comfortable, high in elasticity, high in moisture retention and good in use experience, can accurately monitor electroencephalogram signals, and has great potential in the aspect of long-term electroencephalogram monitoring.

The invention belongs to the technical field of hydrogel, and particularly relates to a high-strength, injectable and self-adhesive recyclable hydrogel electrode and a preparation method thereof. Grape seed protein, deionized water, conductive nanoparticles and plant polyphenol are utilized to form hydrogel, then the hydrogel is freeze-dried and crushed to obtain aerogel powder, and the aerogel powder is mixed with a monovalent-tetravalent metal ion aqueous solution to obtain the hydrogel electrode. The compression strength of the obtained hydrogel is as high as 6.4 MPa, in-situ gelling on the skin can be achieved, seamless attachment is achieved, the interface impedance of a hydrogel electrode is only 25 kilohms and is close to skin impedance, the signal-to-noise ratio is 22 dB, and the hydrogel is suitable for high-precision electromyographic signal monitoring. Due to reversible fracture recombination of non-covalent bonds (coordination bonds and hydrogen bonds), the hydrogel has recyclability, recovery is realized through freeze drying and grinding, and the compression strength, the adhesion strength, the interface impedance and the sensing performance are almost unchanged after recycling.

The invention belongs to the technical field of conductive hydrogel, and particularly relates to an aramid nanofiber ion conductive hydrogel electrode as well as preparation and application thereof. Comprising the following steps: adding aramid fiber and potassium hydroxide into dimethyl sulfoxide, and stirring to obtain an aramid fiber solution; adding chloropropene into the aramid fiber solution, heating and stirring for modification reaction to obtain a modified aramid fiber solution; the preparation method comprises the following steps: mixing dimethyl sulfoxide with water to obtain a mixed solution A; diluting the modified aramid fiber solution with dimethyl sulfoxide, and dropwise adding the mixed solution A under a stirring condition until the solution is transparent, so as to obtain an aramid fiber nanofiber dispersion liquid; adding the aramid nanofiber dispersion liquid into the polyvinyl alcohol prepolymerization solution, and stirring to obtain a mixed solution B; and carrying out in-situ polymerization reaction treatment on the mixed solution B to obtain the aramid nanofiber ionic conductive hydrogel electrode. The hydrogel electrode prepared by the invention has the advantages of high strength, high flexibility, stable ionic conductivity, excellent biocompatibility and reliable environmental stability.

The invention provides a flexible wearable HD-sEMG sensor and a preparation method thereof, and the sensor comprises an array electrode structure which comprises a plurality of sub-array electrode structures which are distributed in different areas of the surface of the sensor, each sub-array electrode structure comprises a plurality of electrodes which are connected through a plurality of layers of stretchable special-shaped structure wires, and the rear ends of the electrodes are connected with gating bonding pads; the gel electrode structure comprises a plurality of gel electrodes, the gel electrodes are located on the electrode surface of the array electrode structure, and materials for forming the gel electrodes comprise an electromagnetic shielding material and a thickener; the gel electrode structure is used for being in contact with the skin to obtain a bio-electricity signal, and the sensor is firmly attached to the skin. The sensor can meet the requirements for chip selection of different individual physiological structure requirements and gating of different acquisition devices, is firmly attached to the skin and can recognize micro action activation signals.

The utility model relates to the technical field of electrocardiogram lead wires, in particular to an electrocardiogram lead wire capable of reducing skin damage, which comprises a connector, and the front end and the rear end of the right side of the connector are respectively provided with a limb lead electrode wire and a chest electrode wire. Button type gel electrodes are arranged at the ends, away from the connector, of the limb lead electrode wires and the chest electrode wires, arc-shaped seats are fixedly connected to the outer sides of the limb lead electrode wires, and connecting seats are fixedly connected to the tops of the button type gel electrodes. Under the action of the button type gel electrode, the arc-shaped seat and the elastic capsule, the electrocardiogram lead wire has the advantage of reducing skin damage, and solves the problems that clips are clamped on four limbs, and clips are clamped at the tail ends of the limbs for a long time, so that local skin is easily damaged, even local tissues are ischemic, and the like. And therefore, some patients cannot insist at the end of the examination, the physical fitness of the patients is poor, and the technology is not easy to carry out.

The application provides a preparation method of super-stretching and high-adhesion silver nanowire hydrogel and application thereof, and is a conductive hydrogel. The silver nanowire hydrogel takes acrylamide, silver nanowire, acrylic acid, polyvinylpyrrolidone and water as main raw materials, silver nanowire is added in the hydrogel system, the toughness and elasticity of the material are enhanced, and the conductivity of the hydrogel is improved. The finally prepared silver nanowire hydrogel has super strong tensile property, extremely high adhesion, excellent conductivity and low contact impedance. The hydrogel prepared by the application can be used for a pressure sensor, can be attached on the skin to collect various physiological signals of the human body, and can be used for electrocardiosignal monitoring. In the aspect of the pressure sensor, the hydrogel can accurately identify different numbers and letters, the accuracy reaches 93%, and can identify various small movements of the human body; in the aspect of physiological signal collection, the hydrogel has good stability, high precision, low impedance, and the material is easy to obtain and simple to operate.

1. The name of the design product: silicone electrode (1). 2. The use of the design product: used for matching transcranial electrical stimulation instrument, and conducting the electrical stimulation signal output by the transcranial electrical stimulation instrument. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention discloses an artificial cochlea super-hydrophilic gel electrode coating material with anti-fibrosis and self-repairing functions and a preparation method of the artificial cochlea super-hydrophilic gel electrode coating material, and the preparation process comprises the following steps: 1) preparing Res nano-emulsion by adopting nano-emulsification, mixing the Res nano-emulsion with a GelMA solution, and preparing Res (at) GelMA microgel through microfluidic and UV curing; 2) respectively preparing a Res (at) GelMA / CSMA mixed solution and an ODex solution, and mixing the Res (at) GelMA / CSMA mixed solution and the ODex solution to obtain a hydrogel premixed solution; (3) putting the artificial cochlea electrode into a light-transmitting mold, then pouring the hydrogel premixed liquid into the mold, and after UV curing and demolding, constructing an electrode gel precoating on the periphery of the artificial cochlea electrode; and 4) in a reactor, chemically grafting PGS on the surface of the electrode gel pre-coating, and washing, irradiating and sterilizing to obtain the electrode coating material. The artificial cochlea electrode with the novel coating has the advantages of being anti-inflammatory, anti-fibrosis, self-repairing and low in electrode implantation force.

The invention relates to the technical field of ammonia borane hydrolysis hydrogen desorption, and provides an ammonia borane hydrolysis catalyst and a preparation method thereof. The preparation method comprises the following steps: preparing a graphene aerogel electrode; preparing an electrolyte comprising a phosphorus-containing compound and a transition metal compound according to a preset proportion; the graphene aerogel electrode and the electrolyte are subjected to an electro-deposition reaction under preset conditions, and the ammonia borane hydrolysis catalyst is obtained. According to the scheme, the problems that high-temperature and high-pressure conditions are needed in the existing catalyst preparation process and the green chemical principle is not met can be solved.