1673 results about "Composite electrode" patented technology

The invention relates to a concrete chloride ion gradient monitoring and durability enhancing method and system based on MXene, and solves the problems that a traditional drilling sampling method is high in operation process destructiveness, high in cost and low in detection efficiency, test results are remarkably influenced by environmental conditions, and field real-time performance and universal applicability are lacked. The method comprises the following steps: embedding a plurality of prefabricated sensing units containing MXene-Cl composite electrode layers and toughening protection layers into concrete at different depths according to a vertical gradient to form a monitoring network; potential signals are collected through a sensing unit, after correction, the potential signals are introduced into a Nernst equation for inversion to obtain the chloride ion concentration, and osmotic distribution imaging is achieved by combining a preset vertical and transverse gradient estimation method. The intercalation adsorption characteristic of MXene on chloride ions is utilized to capture and retard migration of the chloride ions to the reinforcing steel bar. The method has the advantages that chloride ions are monitored in real time, migration of the chloride ions to the steel bars is blocked, the concrete degradation state is evaluated in combination with multi-parameter data, and early warning and durability improvement are achieved.

The invention discloses a composite electrode material for removing uranium through photoelectrocatalysis and a preparation method and application of the composite electrode material, and belongs to the technical field of catalytic materials and wastewater treatment.The preparation method of the composite electrode material comprises the following steps that a ZIF-8 material, copper salt and ferric salt are mixed, and a first metal composite material is prepared; reacting the first metal composite material with a KOH solution to prepare a second metal composite material; carrying out carbonization treatment on the second metal composite material, and then carrying out acid treatment by using acid to obtain a bimetallic atom catalytic material; the preparation method comprises the following steps: dispersing a bimetallic atom catalytic material and a g-C3N4 material in a mixed solution containing phytic acid and a Nafion solution to obtain catalyst ink; and coating the catalyst ink on a substrate, and carrying out illumination drying to obtain the composite electrode material. According to the composite electrode material, under the synergistic effect of the bimetallic single atomic cluster catalyst and g-C3N4, respective advantages are fully exerted, and efficient deposition removal of uranium is achieved.

The invention discloses a composite electrode material for a zinc-bromine flow battery and a preparation method and application thereof, and the preparation method comprises the following steps: S1, uniformly stirring a copper salt, a zinc salt, a sodium salt and distilled water at room temperature, aging in air, and then filtering, washing and drying to obtain a zinc-copper composite salt; s2, adding a polymer into an organic solvent under a stirring condition, and stirring under a water bath condition to obtain a spinning solution; then adding zinc-copper composite salt, stirring and then carrying out ultrasonic dispersion to obtain a composite spinning solution; s3, preparing the composite spinning solution into a precursor nanofiber material by utilizing high-voltage electrostatic spinning; and S4, carrying out pre-oxidation and carbonization treatment on the precursor nanofiber material in an atmosphere furnace, and cleaning and drying the carbonized material to obtain the composite electrode material for the zinc-bromine flow battery. According to the invention, the problems of low surface activity of bromine electrode reaction on an electrode material, unstable electro-catalytic performance, bromine permeation and the like in the zinc-bromine flow battery can be solved.

The invention provides a preparation method of an acid-resistant and chlorine-corrosion-resistant porous composite electrode and a device constructed on the basis of the electrode and used for preparing hydrogen and chlorine by electrolyzing a sodium chloride solution, two cavities are provided, an acid or neutral saturated sodium chloride solution is filled in the cavities, the cavities are separated by a proton exchange membrane or a diaphragm, and the proton exchange membrane or the diaphragm is filled in the cavities. And in the electrolysis process, the cathode generates high-purity hydrogen, the anode generates high-purity chlorine, the chlorine is absorbed by sodium hydroxide in the gas collection bottle and generates sodium hypochlorite, or the chlorine is introduced into a sodium bromide / sodium iodide solution to replace bromine / iodine elementary substances, and the chlorine is discharged from the gas collection bottle. The sodium hypochlorite solution and the bromine / iodine water are used for disinfection and sterilization experiments. The corrosion-resistant porous composite electrode for electrolysis of an acidic or neutral saturated sodium chloride solution is prepared, the electrolysis voltage of the corrosion-resistant porous composite electrode is further reduced by loading a cathode / anode catalyst, and an acidic or neutral saturated sodium chloride solution electrolysis device constructed based on the electrode can be used for preparing high-purity hydrogen and chlorine.

The invention belongs to the field of electrochemical energy, and relates to polyurethane with self-repairing capability, a solid electrolyte, a composite electrode and a preparation method, a soft segment part of the self-repairing polyurethane-based solid electrolyte has good segment motion capability, and compared with polyethylene glycol, the crystallinity is greatly reduced; and the ionic conductivity and the lithium ion transference number are greatly improved. The dynamic disulfide bond and the hydrogen bond of the hard segment part jointly form a dynamic reversible macromolecular network, so that the mechanical strength is considered, and the tensile property, the self-healing property and the repeatable processing property are good. The self-repairing polyurethane-based solid electrolyte has relatively high ionic conductivity and lithium ion transference number, and can be cured on an electrode in situ to eliminate the interface contact problem of the electrolyte and the electrode, and the positive electrode and the negative electrode of the battery are healed into a whole through the self-healing capability of polyurethane, so that the performance of the battery is greatly improved, and the service life of the battery is prolonged. And the material has a good application prospect in all-solid-state lithium batteries.

The invention relates to a high-load composite iodine positive electrode based on an MXene electrochemical reaction regulator as well as a preparation method and application of the high-load composite iodine positive electrode. The high-loading-capacity composite iodine positive electrode comprises a porous self-supporting composite electrode film and an iodine active substance, wherein the porous self-supporting composite electrode film is formed by wrapping a carbon material with an MXene / cellulose network formed by mixing an MXene nanosheet, the carbon material and cellulose, and the iodine active substance is loaded on the porous self-supporting composite electrode film; wherein the iodine active substance comprises I <-> ions and I2; the MXene nanosheet is at least one of Ti < 3 > C < 2 > T < x >, Nb < 2 > T < x >, Mo < 2 > T < x > and V < 2 > T < x >.

The invention provides an alkaline ion battery negative electrode material as well as a preparation method and application thereof, and particularly relates to an MXene / MoS2 / TiO2 composite material which is prepared by the following steps: etching an MAX phase by using mixed acid containing HF to obtain MXene; performing freeze drying to obtain powder containing MXene, a Mo source and an S source; and calcining to obtain the composite material. According to the negative electrode material disclosed by the invention, MoS2 is supported by utilizing high conductivity of MXene and structural collapse of the MoS2 is relieved, and TiO2 enhances cycle stability, is designed for a negative electrode of an alkaline ion battery and shows good cycle performance. MXene is obtained by etching an MAX phase with mixed acid, the composite material is prepared by combining freeze drying and calcination, NH prevents MXene from stacking and expands interlayer spacing, MoS2 is formed after calcination, and a small amount of TiO2 is generated in situ. And the single-layer MXene is used as a binder to replace a traditional material, so that the electrochemical performance of the composite electrode is improved.

The invention relates to the field of batteries, in particular to a long-circulation persistent adhesion type negative electrode composite electrode and a preparation method and application thereof. The long-circulation persistent adhesive type negative electrode composite electrode comprises a current collector, and a first adhesive layer, an active slurry coating and a second adhesive layer which are sequentially coated on two sides of the current collector, according to the invention, through the bonding effect between the second bonding layer and the diaphragm, the pole piece is uniformly stressed during cyclic expansion, the wrinkles of the pole piece are improved, the electrolyte infiltration is better in combination with the oil-absorbing conductive agent, the lithium ion transmission efficiency is improved, and the cycle life is prolonged; an interface structure formed by multi-layer coating can buffer lithium ion intercalation / deintercalation stress, so that the pole piece can still keep good binding power after circulation, and the cycle performance of the lithium ion battery can be effectively improved; the conductive agent contents of the first bonding layer, the active slurry coating and the second bonding layer are distributed in a concave gradient manner, so that the resistance is reduced, and the conductivity is enhanced.

The invention belongs to the technical field of water electrolysis hydrogen production, and particularly relates to an electrolytic hydrogen production electrolytic bath. Comprising a composite electrode assembly; the composite electrode assembly comprises an electrode frame, a bipolar plate, an electrode conductive frame, an oxygen evolution electrode and a hydrogen evolution electrode, the electrode frame is arranged on the outer side of the bipolar plate, the electrode frame and the bipolar plate are both made of plastic materials, the electrode conductive frame is arranged in the electrode frame, and the oxygen evolution electrode and the hydrogen evolution electrode are arranged on the two sides of the bipolar plate respectively and both connected with the electrode conductive frame. By adopting the plastic-based bipolar plate, a sealing effect can be achieved, a sealing gasket part of a traditional electrolytic cell is removed, and the cost of the electrolytic cell is greatly reduced; and the plastic-based bipolar plate, the electrode and the electrode conductive frame are integrated into a whole, so that the assembling and integrating process of the electrolytic cell is greatly simplified.

The invention provides a flow battery composite electrode, a preparation method thereof and a flow battery. The preparation method comprises the following steps: placing a pretreated carbonaceous substrate in a mixed solution of a surfactant, an electrolyte and a transition metal salt, growing a metal oxide nanosheet array on the surface of the pretreated carbonaceous substrate by using an electrochemical deposition process, washing, drying and roasting to obtain the flow battery composite electrode, wherein the feeding ratio of the surfactant to the transition metal salt is (1-2) g: (0.02-0.2) mol. The invention also provides the flow battery composite electrode prepared by the preparation method and a flow battery prepared from the electrode. According to the preparation method, the electrochemical reaction activity of the electrode in the all-vanadium redox flow battery can be optimized by regulating and controlling the chemical composition and the microstructure of the catalyst loaded on the surface of the carbon fiber.

A nanocomposite electrode and a supercapacitor device including said nanocomposite electrode. The nanocomposite electrode includes a mixture of at least one binding compound, at least one conductive additive, and at least one molybdenum doped carbon material coated onto a substrate. The supercapacitor device includes two nanocomposite electrodes disposed facing one another, wherein the substrate of each nanocomposite electrode is coated with the mixture on an inside facing surface and the outer surfaces of the nanocomposite electrodes are not coated with the mixture, and the inside facing surfaces are separated by at least one electrolyte.

The invention discloses a preparation method of an all-solid-state battery unit, the all-solid-state battery unit and an all-solid-state battery module. The preparation method comprises the following steps: 1) pressing and pre-calcining a positive electrode unit to form a sintered laminated body; (2) alternately overlapping at least one negative electrode and the sintered laminated body in the step (1) to form an all-solid-state battery laminated body, and pressurizing the laminated body; (3) carrying out low-temperature primary calcination on the all-solid-state battery laminated body in the step (2); (4) carrying out high-temperature secondary calcination on the all-solid-state battery laminated body obtained in the step (3); wherein the positive electrode unit in the step 1 comprises a solid electrolyte layer, a composite electrode layer and a current collector layer; the composite electrode layer comprises a high ion channel layer and a high electron channel layer. The stable particle space is constructed through multiple times of calcination, the interface impedance between the electrode layer and the electrolyte layer and the interface impedance between the electrode layers are reduced, the densification between the solid electrolyte and the electrode is improved, and the battery capacity and the cycle performance are improved.

The invention relates to a carbon nanofiber loaded Cu nanoparticle composite material prepared by combining an electrostatic spinning method and a high-temperature in-situ reduction reaction and used as a high-cycle-stability zinc negative electrode coating of an aqueous zinc ion battery. Belongs to the technical field of new energy materials. The prepared composite electrode material is regular in structure and excellent in electrochemical performance. Cu is introduced through a high-temperature in-situ reduction reaction. And after the Cu is loaded with the carbon nanofibers, not only is the slow dynamic process of the bare zinc electrode improved, but also the uniform deposition of Zn < 2 + > on the zinc negative electrode in the embedding / separating process is induced.

The invention relates to the technical field of supercapacitors, in particular to an alkali-activated solid-waste-based supercapacitor and a preparation method thereof.The preparation method comprises the steps that industrial solid waste and fiber forestry and agricultural residues are subjected to co-pyrolysis to form organic-inorganic composite solid waste gelling powder, an alkali activator and a functional additive are added to prepare alkali-activated slurry, and the alkali-activated slurry is prepared; pouring, molding and curing to obtain an alkali-activated solid waste-based electrolyte substrate; the method comprises the following steps: performing high-temperature pyrolysis, activation and the like on granular agricultural and forestry wastes to prepare a carbon-based composite conductive material, and preparing a biochar electrode plate; the preparation method comprises the following steps: taking PVDF as a raw material, bonding and curing the PVDF and the raw material, immersing the PVDF and the raw material into a KOH solution containing a PVA thickener, inserting a glass fiber diaphragm, and regulating and controlling the use amount of PVDF and other binders and a solvent system to optimize slurry viscosity and film forming uniformity so as to obtain an electrode film with mechanical flexibility and interface adhesive force; the composite electrode forms a stable composite interface in the process of being in contact with an alkali-activated electrolyte interface, and the phenomena of interface aging and capacitance attenuation caused by mismatching between the electrode and the electrolyte in a traditional cement-based system are effectively avoided.

The present invention relates to the field of battery materials, and provides a lithium manganate cathode material coated with lithium triborate and a preparation method thereof. The cathode material is a porous lithium manganate / lithium triborate composite electrode material, which includes porous lithium manganate with a highly connected directional columnar pore structure and a lithium triborate coating covering the pore surface, with a mass ratio of (86.0~92.0):(8.0~14.0), a coating thickness of 600~800 nm, a pore diameter of 45~95 μm, and a porosity of 65~78%. The preparation method includes: preparing a precursor colloidal solution by the sol-gel method, obtaining porous lithium manganate through low-temperature freezing molding and freeze-drying, and forming a cathode substrate through pre-oxidation and high-temperature sintering; subsequently, using vacuum-assisted impregnation, ultrasound, and nitrogen pressure to promote the penetration of the lithium triborate precursor solution, and forming a uniform coating layer through gradient drying and annealing treatment. The present invention significantly improves the crystal structure stability of the cathode material, inhibits manganese dissolution, improves the cycle life and rate performance, and has wide application value.

The invention discloses a lithium battery quasicrystal composite electrode material interface fracture prediction method, and relates to the technical field of quasicrystal treatment, and the method comprises the following steps: S1, constructing an interface surface density function for a quasicrystal composite electrode material; s2, calculating a total potential energy functional of the quasi-crystal composite electrode material according to the interface surface density function; s3, determining a phase field control model based on the total potential energy functional of the quasi-crystal composite electrode material; and S4, performing numerical value implementation processing on the phase field control model to obtain a prediction result. According to the method, a phase field variable is introduced to describe the damage state of a material, a sharp crack is regularized into a diffusion damage area through a crack surface density function, so that the transition from a crack area to a complete area becomes smooth, and the method can be more easily and naturally combined with a multi-physical field coupling effect while predicting a crack propagation path; and the comprehensive influence of phonon-phase ion-heat-electricity-ion concentration-damage-interface coupling field is considered.

The invention relates to the field of electrode material preparation, in particular to a graphene local in-situ coated electrode material and a preparation method thereof. The preparation method comprises the following steps: mixing a powdery electrode material with graphite, wherein the mass ratio of the graphite to the powdery electrode material is (0.0001-0.01): 1; and then mechanical grinding is carried out, so that the graphite forms graphene in situ under the action of mechanical force, the surface of the electrode material is coated with the graphene in situ by utilizing the adsorption force of a newly-generated nano surface and mechanical work, and the graphene locally-modified composite electrode material is obtained. According to the preparation method, extremely low graphite consumption is controlled, in-situ generation and coating of graphene are realized by utilizing a mechanical grinding one-step method, complex steps such as independent preparation of graphene and high-temperature sintering are omitted, the process is simple, and the cost is low; and the complete shielding of an ion transmission channel is avoided while an electronic conductive network is effectively constructed, so that the capacity, the cycling stability and the rate capability of the electrode material are remarkably improved.

The invention discloses an electrochemical detection method of dopamine, and belongs to the technical field of analysis. According to the method, SnS2 quantum dots are loaded on Zn-MOF and modified on an electrode, then gold nanoparticles and a sulfydryl-containing dopamine aptamer single chain are sequentially fixed on the electrode, an Apt / AuNPs / SnS2QDs (at) Zn-MOF / GCE composite electrode (in an open state) is formed, an electrochemical signal of the composite electrode is greatly improved, and based on specific recognition between dopamine and an aptamer chain, the electrochemical performance of the composite electrode is improved. A large cavity of Zn-MOF is used for packaging SnS2 quantum dots with excellent electrochemical properties, electrochemical signal amplification is achieved, when a target object dopamine exists, dopamine can quench an ECL signal, an electric signal is obviously reduced (in a closed state), and therefore a linear relation between the change of the electrochemical signal and the concentration of dopamine is constructed, and the electrochemical property of the electrochemical signal is improved. Therefore, high-sensitivity and high-selectivity detection of dopamine is realized.

A solid electrode includes particles of an electroactive material, a solid electrolyte comprising particles of an ionic conducting compound having at least one halogen element, a conductive carbon, and a coating deposited on the particles of the electroactive material, the particles of the solid electrolyte, or a combination thereof. The coating includes a metal halide, a metal sulfide, a metal phosphide, a metal oxide, a metal selenide, or a combination of two or more thereof. A method for preparing the solid electrode includes milling a mixture of the electroactive material, the conductive carbon, and the solid electrolyte to produce the coated solid electrode material comprising the coating derived from decomposition products of the ionic conducting compound, the coating deposited on the particles of the electroactive material, the solid electrolyte, or a combination thereof.

The embodiment of the invention provides an energy storage device with conductive polymer sponge and an intelligent monitoring system of the energy storage device, and belongs to the field of electrochemistry, the energy storage device comprises a shell, and an electrode assembly, electrolyte and a current collector which are arranged in the shell; the electrode assembly comprises a positive electrode, a negative electrode and a diaphragm arranged between the positive electrode and the negative electrode, and the positive electrode and the negative electrode are composite electrodes of conductive polymer sponge; the conductive polymer sponge is a polymer sponge which is prepared through an in-situ chemical oxidation polymerization technology and has a porous network, and the energy storage device further comprises a control system used for controlling the operation state of the energy storage device. According to the embodiment of the invention, the polymer sponge with a highly interconnected porous network is prepared through an in-situ chemical oxidation polymerization technology on the basis of a unique microstructure of the conductive polymer sponge, and the three-dimensional structure of the polymer sponge increases the effective surface area of an electrode and improves electrochemical reaction active sites, so that more efficient charge transmission and storage are realized.

The invention belongs to the technical field of batteries, and provides a battery cell structure and a manufacturing method and application thereof, the manufacturing method comprises the following steps: forming a plurality of positive electrode insulation partitions arranged at intervals on a to-be-coated surface of a positive electrode current collector, and forming a positive electrode active layer in an area between every two adjacent positive electrode insulation partitions to obtain a positive electrode roll; and unwinding the positive electrode insulation partition, a negative electrode roll and a solid electrolyte membrane roll, carrying out rolling compounding to obtain a composite electrode roll, and cutting the positive electrode insulation partition to obtain the battery cell structure. The positive electrode insulation partition can insulate the periphery of the positive electrode active layer with a smaller area, can compensate the size difference of the positive electrode and the negative electrode, and provides support for the negative electrode in the subsequent rolling compounding process, so that the sizes of the positive electrode and the negative electrode are consistent, and the problem of short circuit caused by edge shearing stress during pressure application is solved; roll-in compounding can effectively improve densification and improve electrolyte interface contact, and the manufacturing method is simple, convenient, economical, efficient and suitable for mass production.

The invention relates to a composite electrode material of an A-C core-shell structure, and belongs to the technical field of electrode materials. In the core-shell structure composite electrode material, A is any one element, two elements, three elements, four elements or five elements selected from Mn, Ni, Co, Fe, Cu, Zn, Ru, Pd and Rh; c is RE < x > Ce < 1-x > O < 2 >, and RE is any one element or two elements selected from La, Pr, Nd, Sm and Gd; x is the mole fraction of RE. By improving the interaction between the oxide and the core multi-component alloy and the synergistic effect between the elements, the structural stability and the carbon deposition resistance of the electrode material under the high-temperature condition are remarkably enhanced.

The invention relates to the technical field of flow battery energy storage, and discloses a nanofiber / graphite felt composite electrode material for a flow battery and a preparation method of the nanofiber / graphite felt composite electrode material. The preparation method of the electrode material comprises the following steps: by taking a carbon fiber graphite felt as a carrier, silicon powder and silicon dioxide powder as silicon sources, growing silicon carbide nanowires in situ on the fiber surface by adopting a vacuum thermal evaporation method, or by taking ferrocene as a catalyst precursor, cyclohexane as a solvent and a reaction carbon source and thiophene as an additive, preparing the carbon fiber graphite felt / silicon carbide nanowire composite electrode material. And growing a carbon nanotube on the surface of the fiber by adopting a floating catalyst chemical vapor deposition method, and performing water vapor activation on the prepared silicon carbide nanowire / graphite felt composite electrode material or the carbon nanotube / graphite felt composite electrode material in an activation furnace to prepare the modified nanofiber / graphite felt composite electrode material for the flow battery. The specific surface area, the hydrophilicity and the electric conduction and heat conduction performance of the carbon fiber graphite felt are greatly improved, and the application of the nanofiber / graphite felt composite electrode material in the field of flow battery energy storage is realized.

The invention provides a vanadium dioxide composite electrode material and a preparation method and application thereof. The method comprises the following steps: taking vanadium leachate as a raw material, reacting with a reducing agent under the condition that the pH value is 2-6, mixing the obtained tetravalent vanadium solution with a precipitator, carrying out precipitation reaction, filtering, washing and drying the precipitate to obtain vanadium dioxide precursor particles, grafting a silane coupling agent with sulfydryl onto the surface of the vanadium dioxide precursor through coupling reaction, and carrying out vacuum drying to obtain the vanadium dioxide precursor. Silver ions are chelated under the action of sulfydryl, and silver elementary substances are deposited on the surfaces of vanadium dioxide precursor particles through reduction. And coating the composite slurry of the vanadium dioxide precursor and the carbon nanotube on the surface of a substrate, and calcining to obtain the vanadium dioxide composite electrode material. The vanadium dioxide composite electrode material is used as a negative electrode material of a battery, and the obtained battery is found to have excellent stability and reaction dynamic characteristics.

The invention belongs to the related technical field of flexible electrodes, and discloses a preparation method, a product and application of a high-temperature-resistant flexible metallized ceramic nanofiber composite electrode. The method comprises the following steps: carrying out electrostatic spinning on electrostatic spinning sol doped with an organic polymer to obtain a precursor of a flexible ceramic nanofiber membrane; carrying out primary high-temperature calcination on the precursor to remove the doped organic polymer so as to obtain a flexible ceramic nanofiber membrane; growing and coating a metal conductive layer on the surface of the flexible ceramic nanofiber membrane to obtain an electrode precursor; and carrying out secondary high-temperature calcination on the electrode precursor to obtain the required composite electrode. The invention also discloses a product obtained by the preparation method and application. According to the invention, the problem that the flexible sensor is not resistant to high temperature is solved.

The invention relates to a solid electrolyte and a preparation method thereof, a solid composite electrode, a solid battery and equipment, and particularly relates to the technical field of batteries. The solid electrolyte comprises an oxide electrolyte skeleton and a sulfide electrolyte, the oxide electrolyte skeleton is internally provided with mutually cross-linked pore channels, and the sulfide electrolyte is attached to the pore channels. On one hand, the oxide electrolyte has relatively high ionic conductivity, and the degree of influence on the loss of the ionic conductivity of the sulfide electrolyte is low; on the other hand, the oxide electrolyte skeleton can reduce the direct contact between the sulfide electrolyte in the internal pore channel and the positive and negative electrode materials as much as possible, and reduce the output of by-products such as low-conductivity ions, so that the negative influence of unnecessary reaction of the sulfide electrolyte on the battery performance can be reduced; the solid-state battery is ensured to have relatively high ionic conductivity and interface stability, and the application prospect of the solid-state battery can be improved.

The invention relates to the technical field of water treatment, and mainly relates to a composite electrode unit, an electrochemical water treatment system and an electrochemical water treatment method. The composite electrode unit comprises an electrolyzed water cathode, a porous insulating filler layer and an electrolyzed water anode; the porous insulating filler layer is positioned between the electrolyzed water cathode and the electrolyzed water anode; the internal material of the porous insulating filler layer does not contain exchangeable ions, and the internal part refers to a non-surface part. According to the device, a cathode and an anode are respectively integrated on two sides of a porous insulating filler layer to form a unique composite electrode unit with a filler-electrode integrated structure. Under the driving of ultra-low direct-current working voltage, the transfer of water is controlled through filler micro-channels to realize the migration blocking of hydroxyl radicals, and meanwhile, the hydroxyl radicals are diffused into a water-phase main body of a cathode chamber by virtue of a local gradient diffusion effect generated by a catalytic reaction on the surface of an electrode and a forced diffusion effect of pumping; and scale-forming ions are quickly crystallized and separated out in a cathode region, and the hardness of water is reduced.

The invention discloses a composite sensing electrode and a preparation method and application thereof, and belongs to the technical field of environmental detection.The preparation method comprises the steps that CNC is activated, then the activated CNC is modified with a CdS cluster material, a CdS-CNC composite electrode material is obtained, then a GCE electrode is modified with the CdS-CNC composite electrode material, and a CdS-CNC-GCE composite sensing electrode is obtained; the invention also discloses the CdS-coated CNC-GCE composite sensing electrode prepared by the method and application of the composite sensing electrode in detection of heavy metal elements in an aqueous solution. The CdS-coated CNC-GCE composite sensing electrode has the beneficial effects that an effective technical method and way are provided for improving the electrode performance of a heavy metal sensor, the prepared CdS-coated CNC-GCE composite sensing electrode is high in anti-interference performance and good in stability, the content of various heavy metals can be timely and rapidly detected, and the purpose of dynamically monitoring the change of the content of the heavy metals in the production activity period is achieved.

The invention belongs to the technical field of flexible transparent energy storage, and discloses a preparation method and application of a flexible stretchable transparent MXene / AgNWs / PDMS composite film electrode, according to the method, a PDMS substrate film, AgNWs and MXene are assembled layer by layer, and a Schottky barrier is formed between one-dimensional AgNWs and two-dimensional MXene, so that the MXene material is firmly attached to the surface of the AgNWs material, corrosion of the AgNWs can be prevented, and the service life of the flexible stretchable transparent MXene / AgNWs / PDMS composite film electrode is prolonged. According to the MXene / AgNWs / PDMS composite film electrode, the cycle stability of the composite electrode is improved, a 1D / 2D heterostructure can be formed, the electrochemical storage capacity of the MXene / AgNWs / PDMS composite film electrode is effectively improved, and a flexible transparent supercapacitor with high light transmittance, high capacitance and mechanical flexibility perfectly unified is expected to be achieved.

A preparation method for a composite electrode sheet containing a solid-state electrolyte layer. A solid-state electrolyte is uniformly introduced into a solid-state battery by means of wet electrostatic atomizing spraying, so that a continuous and compact interface of a solid-state electrolyte layer can be constructed on an electrode sheet, enhancing flexible interfacial contact between the electrode sheet and the solid-state electrolyte layer, thereby reducing interface impedance, and improving the electrochemical performance of the solid-state battery.