36 results about "Electrode interface" patented technology

The invention discloses an extensible three-dimensional electrical impedance imaging electrode array device, and belongs to the technical field of biomedical measurement. The device comprises a two-dimensional electrode interface module which is connected with original two-dimensional equipment through a series input and expansion interface; the three-dimensional common electrode array comprises a plurality of groups of electrodes at different horizontal layers; the input end of the three-dimensional electrode control module is connected to the two-dimensional electrode interface module, and the output end of the three-dimensional electrode control module is connected to the three-dimensional common electrode array. The control module comprises an electrode array control connector which is connected in parallel and an isolation type analog switch unit of a multi-stage series analog switch structure. By sending a control signal to the control connector, all electrode channels on a certain layer in the three-dimensional electrode array are uniformly gated, and original two-dimensional measurement is mapped to a three-dimensional space. According to the invention, three-dimensional measurement can be realized without changing the original equipment, the number of vertical layers expanded by serial connection of interfaces is supported, the number of horizontal electrodes expanded by parallel connection is controlled, and high compatibility, high expansibility and excellent signal isolation capability are realized.

The utility model discloses a plasma operation electrode cutting in-vitro tissue temperature test platform, which comprises a plasma host, a plasma operation electrode, a temperature measurement console, a temperature recorder, a time synchronization controller and a computer, and is characterized in that the plasma operation electrode is connected with an operation electrode interface of the plasma host through a lead; according to the test platform, the plasma operation electrode can be conveniently clamped and fixed by arranging the adjusting sliding block, the annular clamping frame and the anti-skid layer, and the spatial position of the plasma operation electrode clamped and fixed by the electrode clamping mechanism can be conveniently and accurately adjusted in the x direction, the y direction and the z direction by arranging the supporting column, the connecting sleeve, the connecting block, the positioning bolt and the connecting rod; the depth of the plasma operation electrode tool bit fixed on the electrode clamping mechanism inserted into the in-vitro tissue and the distance between the plasma operation electrode tool bit and the temperature measuring probe can be conveniently controlled, so that temperature data of different depths in the in-vitro tissue can be conveniently measured, and the temperature of the in-vitro tissue can be conveniently and accurately measured.

The invention relates to the technical field of solid oxide electrolytic cell hydrogen production, and particularly discloses a control system and method of SOEC equipment for producing hydrogen by electrolyzing water. The system comprises a multi-frequency impedance acquisition unit and a dynamic interval matching and cooperation controller. The method is characterized by comprising the following steps of: synchronously acquiring alternating-current impedance parameters of different frequency bands for representing an electrolyte body phase state and an electrode interface state; dynamically determining an optimized operation interval in a multi-dimensional impedance state space according to the real-time direct-current working state of the electric pile; a cooperative control instruction is generated by comparing the relative positions of the impedance parameter and the dynamic interval, and meanwhile, a direct-current power supply, a heating device and a gas supply device are adjusted according to differential weights to drive the state of the galvanic pile to enter and be kept in the target interval. According to the method, the internal comprehensive state of the electric pile is directly reflected by using the impedance parameter, global and rapid adaptive cooperative control is realized, and the operation efficiency, stability and durability of the SOEC system can be improved.

This utility model discloses a transcranial electrical stimulation (TCS) device for children's language training, comprising a housing and a control component disposed within the housing. A stimulation electrode interface is disposed on the right side of the housing, fixedly connected to the housing and electrically connected to the control component. A mode selection button, electrically connected to the control component, is provided on the housing to switch between different TCS modes. The TCS device for children's language training provided in this application allows switching between different TCS modes via the mode selection button, enabling selection of different TCS modes to meet the safety and precise control requirements of children's language training.

The utility model discloses an electrode connecting structure of a neuromuscular stimulator, which relates to the technical field of medical instruments, and is characterized by comprising an external shell, conductive hydrogel for packaging and an electrode pulse mechanism positioned between the conductive hydrogel and the shell, the electrode pulse mechanism comprises a PCBA (Printed Circuit Board Assembly) board, a positive electrode and a negative electrode, a control module is integrated on the PCBA board, connecting pieces are arranged between the PCBA board and the positive and negative electrodes, the PCBA board is detachably connected with the positive and negative electrodes through the connecting pieces, and positive and negative electrode interfaces are arranged on the PCBA board close to the positive and negative electrode ends; according to the utility model, the connection mode of the electrode and the circuit board is optimized, the reliability of long-term use is ensured, and the conductivity of the electrode can be improved.

The utility model relates to an environment-friendly portable water quality detector in the field of water quality detection, which comprises a shell, an electrode interface, a display screen, a main control board, a battery and a control key, the upper end of the shell is provided with two electrode interfaces, one electrode interface is a composite electrode interface, the other electrode interface is a single electrode interface, the composite electrode interface is connected with a composite electrode, and the single electrode interface is connected with a single electrode; detection of a plurality of sensors is carried out through the two electrode interfaces; the composite electrode interface is provided with a multifunctional adapter, so that setting of various sensors is completed, the functions of automatic identification of various types of sensors, reading and storage of measured data, sensor calibration and the like can be set through the multifunctional adapter, and detection of various test indexes is completed.

The invention provides the double-electric-layer capacitor electrolyte with high energy density and cost advantages, the additive of the electrolyte contains small cations to increase the degree of freedom of salt ions and reduce the viscosity, and the anion part contains hydrophobic groups and oxyphilic groups of oxyphilic functional groups on the surface of activated carbon to reduce the contact between water molecules and an electrode interface, so that the service life of the double-electric-layer capacitor is prolonged, and the service life of the double-electric-layer capacitor is prolonged. And furthermore, the gas production rate of the electrolyte is reduced, the high-rate performance is adapted, the capacity exertion is increased, and the characteristic of low cost is compatible. The capacity retention rate of an EDLC battery cell containing the preferable additive is increased to 78.2% (19.3%) from 58.9% of a blank sample after 1000 circles of 125A large-current circulation (the current of a conventional application scene of the capacity battery cell is 25A), the capacitance retention rate is increased to 78.2% (19.3%) from 58.9% of the blank sample after 1500h of high-temperature floating charge at the voltage of 65DEG C and 2.9 V, and the internal resistance growth rate is increased to 78.2% (19.3%) from 58.9% of the blank sample. According to the present invention, the preferable additive can significantly improve the capacity, such that the injection amount of the cell electrolyte can be reduced so as to reduce the production cost on the premise of maintaining the capacity unchanged, the safety is high, the process change is small, the electrochemical performance is significantly improved, and the commercialization requirement can be well met.

This invention belongs to the field of electrochemical deoxygenation technology, specifically relating to an electrochemical oxygen atmosphere control system and method. The system, from bottom to top, includes a porous bottom cover, a first hydrophobic and breathable membrane, an oxygen-consuming cathode, a liquid-conducting diaphragm, an oxygen-evolving anode, a second hydrophobic and breathable membrane, and a porous top cover. Each component layer forms a zero-gap contact through the clamping force of the outer shell, enabling the device to achieve an ultra-thin thickness. The liquid-conducting diaphragm has a transverse liquid-conducting groove extending to the external electrolyte chamber, utilizing capillary action to achieve rapid electrolyte replenishment and eliminate local hot spots. Through the coupling design between the hydrophobic and breathable membrane and the electrode interface, oxygen generated by the oxygen-evolving anode directly penetrates and overflows in the form of gas molecules, effectively suppressing bubble formation and accumulation in traditional electrolysis processes, and significantly reducing the ohmic resistance of the interface and operating energy consumption. This invention features an extremely thin structure, high reaction efficiency, and no bubble interference, making it suitable for precise oxygen concentration control in spaces such as refrigerators and precision storage environments.

This application relates to a neuromodulation device and an assembly for neuromodulation. The neuromodulation device includes a sealed housing assembly and electrodes. The sealed housing assembly includes an energy storage element, an output modulation element, and an electrode interface element. One end of the electrode is physically, electrically, and signalally connected to the sealed housing assembly via the electrode interface element. The other end of the electrode is arc-shaped and integrates one or more heating elements and a temperature sensing element; this other end is used for positioning near a target nerve. The neuromodulation assembly includes the neuromodulation device and an excitation device. The excitation device is used for energy emission and includes a control element, a waveform modulation element, and a emission element. The excitation device is operably connected to the neuromodulation device via the emission element in a wired or wireless manner.

The utility model relates to a three-electrode button cell. The three-electrode button cell comprises: a top cover, the end face of which is provided with a through hole; the electrode assembly comprises a negative plate, a first diaphragm and a positive plate which are stacked in sequence; the lithium plate is arranged between the top cover and the electrode assembly, and the lithium plate and the positive plate or the negative plate of the electrode assembly are arranged at intervals through a second diaphragm; the conductive piece is arranged between the lithium sheet and the top cover, is in ohmic contact with the lithium sheet and is insulated from the top cover; the sealing ring is arranged on the inner edge of the through hole of the top cover and abuts against the conductive piece penetrating through the through hole; and the shell is buckled with the top cover to form a closed cavity. The lithium sheet is arranged between the negative plate and the top cover of the button cell as the reference electrode, the electric potential of the reference electrode is exported in real time by the conductive piece, the electrochemical behavior of an electrode interface can be accurately analyzed in cooperation with potential signals of the positive electrode and the negative electrode, and the button cell is stable in structure, convenient to assemble, particularly good in sealing performance and high in reliability. And in-situ three-electrode testing can be carried out for many times.

The utility model discloses an intelligent plate adaptation system. The system comprises an upper computer and a bottom plate which are in communication connection with each other, the bottom plate is provided with a plurality of slots, each slot is provided with a plurality of function plates in a pluggable mode, and each function plate is provided with a code; an MCU, a slot interface, an identification circuit, a stimulation circuit and an electrode interface are arranged in the function board, the MCU is in communication connection with the slot interface, the slot interface is connected with the slot, the MCU is connected with the identification circuit, the MCU is connected with the electrode interface through the stimulation circuit, and the electrode interface is used for being connected with an electrode. According to the intelligent plate adaptation system, various function plates which can be flexibly plugged and unplugged are installed through the slots of the bottom plate, the adaptation problem between different function plates and table type electric ultrasonic treatment equipment is solved, the practicability of products is improved, the confidentiality of the products is improved, and the cost is reduced.

The invention relates to an electrochemiluminescence sensor based on an intelligent controlled release-interface capture-self-enhancement mechanism and application of the electrochemiluminescence sensor in procalcitonin detection, and belongs to the technical field of electrochemiluminescence detection. Controllable release of signal molecules is achieved by packaging terpyridyl ruthenium through ZIF-8, meanwhile, a DNA layer rich in guanine is modified on an electrode interface, and the layer can serve as a nano trap to efficiently capture the signal molecules and can also serve as a co-reactant to achieve signal amplification. A DNA strand displacement reaction is utilized to regulate and control a target response release process, and detection is realized according to a quantitative relationship between the concentration of procalcitonin and an electrochemical luminescence signal. A labeling recovery method verifies that the recovery rate of the sensor in a human serum sample reaches 100.6-103.6%, good accuracy and precision are shown, and a reliable platform is provided for clinical detection of inflammatory markers.

The utility model provides an electrode interface of a muscle stimulator, which relates to the technical field of electrode interfaces and comprises an electrode interface body. The electrode interface body is provided with a butt joint anti-falling device in the left-right direction, the center of the butt joint anti-falling device is provided with an inner threaded cylinder in the left-right direction, four rightward L-shaped elastic pieces are arranged on the outer circumference of the inner threaded cylinder of the butt joint anti-falling device in an annular array mode, and triangular clamping blocks are arranged on the inner end faces of the right ends of the L-shaped elastic pieces of the butt joint anti-falling device. The right side of an internal thread cylinder of the butt joint anti-falling device is provided with a stimulator guide column in the left-right direction through threads, so that the butt joint anti-falling device is conveniently installed on a stimulator through the stimulator guide column, the stimulator guide column is conveniently connected with a stimulator circuit, and a wire protection cylinder is conveniently inserted into the butt joint anti-falling device to achieve butt joint anti-falling. The problems that the butt-joint state of the electrode interface cannot be effectively determined, so that the butt-joint stabilizing effect of the electrode interface is poor, and butt-joint measures are inconvenient to add on the electrode interface to determine the butt-joint state and maintain the butt-joint stability are solved.

The application discloses a method and device for hydrogen production by electrolysis of water. The anode and cathode electrode materials are clamped in the anode clamp and cathode clamp respectively, and the electrolyte is injected to immerse the electrode clamp. After adjusting the distance between the two electrodes to the preset reference distance, the electrolysis voltage is applied to start the reaction. The high-frequency oscillation mechanism drives the two electrodes to do reciprocating oscillation with the reference distance as the center. The oscillation frequency matches the inherent characteristic frequency of the electrode surface flow boundary layer. The fast-shrinking slow-expanding asymmetric waveform is adopted, and the amplitude does not change the macroscopic working distance between the two electrodes. The transient electrochemical signals are synchronously collected to correct the oscillation frequency, and the hydrogen and oxygen gases generated in the reaction are collected. The application can strengthen the ion mass transfer of the electrode interface, realize the early directional separation of bubbles, effectively improve the electrolysis efficiency, and adapt to multiple types of electrolyte and variable load working conditions.

The application provides a full hydrogel nerve electrode which is composed of four layers of hydrogel, namely a PSFD hydrogel layer, an LPPDMEA layer, a PSFD hydrogel layer and an MHD layer; the application also provides a preparation method and application of the full hydrogel nerve electrode. The application provides a PEDOT:PSS hydrogel conductive path with ultrahigh conductivity, which achieves a record capacity compared with a metal electrode; the introduction of dopamine in each layer of the full hydrogel nerve electrode ensures excellent interface compliance, so that the full hydrogel nerve electrode can be attached to the complex geometry of soft neural tissue and avoid interface mismatch between the conductive layer, the packaging layer, the shielding layer and the tissue-electrode interface; the natural polymer packaging layer improves compatibility, and the electromagnetic shielding layer is used to improve the signal-to-noise ratio. The full hydrogel nerve electrode can provide artificial electrical stimulation to the cerebral cortex of a rat during a seizure, and the prepared full hydrogel nerve electrode has the potential to become a valuable tool for better understanding the development, function and treatment of brain diseases and neurodegenerative diseases and neurodegenerative diseases.

The invention discloses a preparation method and system for changing water quality through electric energy activation, particularly relates to the technical field of electrochemical water treatment, and aims to solve the contradiction between local overload of an electrode interface and insufficient overall treatment of a water body in the prior art. The method comprises the following steps: acquiring a conductivity parameter of a to-be-treated water body and judging whether the conductivity parameter is within a preset threshold range or not, when the conductivity parameter is within the preset threshold range, monitoring an electrode surface bubble behavior to identify a local overload tendency, and analyzing a tracer concentration attenuation curve to identify an overall insufficient treatment tendency. Evaluating the harmony level of the interface and the overall processing based on the identification result, and meanwhile, analyzing the dielectric spectrum to monitor the change trend of the water molecule cluster structure, and dividing the processing area into an interface dominant area and a main mass transfer area according to the harmony level and the change trend of the water molecule cluster structure; and different electric field parameter combinations are respectively applied to realize coordinated optimization of interface reaction and overall mass transfer.

The application discloses an artificial solid electrolyte interface layer and a preparation method thereof, and a preparation method of a composite piezoelectric film, and comprises the following steps: uniformly mixing an organic copolymer, an inorganic piezoelectric phase and a solvent to obtain a composite precursor solution, uniformly coating the composite precursor solution on an inert substrate, drying after coating is completed, and obtaining a composite film on the inert substrate; applying an electric field to the composite film, simultaneously, performing polarization treatment on the composite film, cooling to room temperature, and obtaining a composite piezoelectric film on the inert substrate. By constructing the composite piezoelectric film with residual polarization orientation on the surface of the negative electrode, the 'field-force coupling' response of the composite piezoelectric film under the action of the electric field and the stress is utilized, the dynamic negative feedback regulation of the lithium metal negative electrode interface electric field and the ion distribution is realized, and thus the dendrite growth is effectively inhibited, the deposition uniformity is improved, and the cycle stability is improved.

The invention discloses a scalp electroencephalogram sensing electrode design method based on three-dimensional gradient synergy, which comprises the following steps of: 1, determining the number of structural layers of an electrode, namely at least three layers; 2, determining the component, structure and potential three-dimensional gradient requirements of each layer of material; and step 3, preparing each layer of material of the electrode and meeting the three-dimensional gradient requirements of components, structures and potentials. The method has the advantages that the gradient design of an electrode interface in three dimensions of composition, structure and potential is fully utilized, the traditional mutability high-resistance interface design is changed, the transfer and conversion resistance of ionic charges and electronic charges is greatly reduced, the charge conversion efficiency is improved, and high-fidelity sensing of electroencephalogram signals is realized; the method has the advantages of being of great significance to preparation of high-performance electroencephalogram sensing electrodes and development of high-performance brain-computer interface systems.

An electrode interface for driving an electrode of a quantum circuit is described. The electrode is selectively connectable to at least one signal line. Each signal line is connected to an intermediate node by a respective first switch. The intermediate node is connected to the electrode by a second switch. A buffer capacitor couples the intermediate node to a ground or reference voltage. To disconnect a signal line from the electrode, the second switch is opened, to effectively decouple the first switch(es) from the intermediate node, before the first switch connected to the relevant signal line is opened.

The invention belongs to the technical field of electrolytic tanks, and particularly relates to a composite microporous layer structure for oxygen evolution of an electrolytic tank and a preparation method thereof.The composite microporous layer structure comprises a substrate layer, a bubble separation layer, a bubble growth layer, a bubble nucleation layer and a bubble removal layer which are sequentially stacked; the bubble separation layer is connected with an anode side cavity opening of the electrolytic tank; continuous branch-shaped pore throats are arranged in the bubble nucleation layer and the bubble growth layer; the bubble nucleation layer is of a periodic structure, the valley part forms a preferential nucleation area, and the bottom of the valley part is connected with the pore throat; the bubble removing layer is arranged at a position outside the preferential nucleation area on the bubble nucleation layer; the bubble removal layer is disposed toward the electrode interface. Compared with the prior art, the invention solves the problem that the negative influence caused by bubble accumulation cannot be fully solved in the prior art. The composite microporous layer structure in the scheme has the characteristics of enhancing the electrode interface reaction and promoting the discharge of products, and can realize the efficient oxygen evolution of the electrolytic tank and promote the rapid discharge of oxygen in the form of small bubbles.

Systems, devices and methods are disclosed related to shapeable lead assemblies. Such lead assemblies can be configured to be shaped in a desired manner before and / or during a procedure, such as, for example, after the lead assembly has been at least partially placed within the anatomy of a subject. The shapeable lead assembly can be shaped during a neuroregenerative procedure to contact and / or otherwise interface with a targeted nerve.

The application discloses a lead ion detection method based on photoelectrochemistry, comprising the following steps: providing a working electrode, the surface of which is decorated with a photoelectric active material layer, and a DNAzyme recognition system is constructed based on the photoelectric active material layer; the DNAzyme recognition system comprises a substrate chain and an enzyme chain-signal amplification nanocomposite material; the sample to be detected is contacted with the working electrode, in the presence of lead ions, the specific cleavage activity of the DNAzyme sequence is activated, the substrate chain is cut, the enzyme chain-signal amplification nanocomposite material is released from the electrode surface or the spatial conformation is changed, so that the photoelectric signal of the electrode interface is caused; based on the correlation between the photoelectric signal and the lead ion concentration, the lead ion in the sample is quantitatively or qualitatively analyzed. The application realizes high-sensitivity, high-selectivity and low-cost photoelectrochemical detection of trace lead ions, and is simple to operate, and can realize on-site rapid screening.

This application relates to the field of bioelectrical signal acquisition and brain-computer interface technology, and discloses an electroencephalogram (EEG) acquisition device. It includes a device body, ear clip components, a brain oxygen acquisition module, and a main control module. The EEG acquisition module, ear clip components, and brain oxygen acquisition module are all electrically connected to the main control module. The device body is a flexible, adaptable body, using flexible silicone as a covering layer. The ear clip components are a first ear clip and a second ear clip, symmetrically arranged. The first ear clip serves as the EEG acquisition reference negative electrode, and the second ear clip serves as the environmental interference acquisition end. The second ear clip is electrically connected to the differential amplification module within the main control module. The device body has an embedded magnetic female electrode interface, which serves as a dry electrode for acquiring EEG signals, and / or magnetically connects to external electrode pads for acquiring EEG signals. The device body has multiple preset forehead acquisition points, and the main control module integrates a point configuration switching module to wake up or deactivate corresponding acquisition points.

The utility model discloses a PH meter convenient for remote control, and relates to the PH meter field, the PH meter comprises a machine body, the front end of the machine body is reserved with an electrode interface, the electrode interface is fixedly connected with an electric wire, the end part of the electric wire is provided with a probe, the outer ring of the electric wire is movably sleeved with a storage box, and the inner part of the storage box is reserved with a through hole. According to the utility model, the long electric wire can be stored, coiled and stored, so that the subsequent use of the electric wire is not influenced, the electric wire is prevented from being knotted, the service life of the electric wire is prolonged, the service life of the device is further prolonged, the length of the electric wire is adjustable, and the device can be conveniently used under different conditions; meanwhile, a shifting plate at the end of a threaded rod is twisted to drive the threaded rod to rotate, the threaded rod drives a rotating rod to rotate, the electric wire is wound on the outer ring of a connecting rod fixedly connected with the end wall of the rotating rod, the threaded rod in threaded connection with the storage box moves during rotation, and a channel provides a displacement space for the threaded rod; and the winding work can be smoothly carried out.

The application discloses a kind of based on transient finite element analysis zinc electrodeposition process multi-physical field coupling simulation and process parameter optimization method, belong to electrodeposition process modeling analysis and parameter control technical field, specific steps include: in simulation platform, establish zinc electrodeposition three-dimensional transient model, coupling ion mass transfer and electrode interface reaction process;Set the structural parameters of electrodeposition system, process parameters and boundary conditions;The model is meshed and calculated using transient solution method, ion concentration field distribution and deposition thickness evolution results under different working conditions are obtained;According to the calculation results, the electrolyte flow rate, anode-cathode spacing, acid-zinc ratio and current density are optimized and controlled.The application can realize the coordinated control of main reaction and side reaction in zinc electrodeposition process, improve the interface mass transfer state, improve the compactness, uniformity and process stability of the deposition layer, and is used for zinc electrodeposition process optimization and related electrochemical deposition process design and control.

The invention relates to the technical field of food detection, and discloses a physical property analysis method for detecting solute content in a vegetable pickling liquid, which comprises the following steps: applying an alternating current excitation electric field to a vegetable pickling liquid to be detected, collecting a complex dielectric constant real part sequence and an actually measured imaginary part sequence, deducing a theoretical imaginary part sequence by utilizing physical conservation integral transformation, and determining the solute content in the vegetable pickling liquid. Non-causal random components generated by transient abrupt change of a medium space proportion in measured data are compared, identified and eliminated to reconstruct an intrinsic complex electrical performance spectrogram, an electrode interface capacitance parameter is extracted, interference generated by interface adsorption impedance is corrected, and a microscopic viscous resistance compensation mechanism is utilized to invert and output solute content. Fluid random artifacts are intercepted through a physical rule constraint mechanism, measurement drift caused by an adsorption layer on the surface of the sensor is eliminated, restriction of non-uniformity of a medium microenvironment in the later period of fermentation on solute inversion is solved, and stable monitoring of solute concentration in a complex environment is achieved.

The portable bioelectric impedance imaging system and method based on AD5940 generates an alternating excitation signal by a signal conditioning and acquisition device, and under the unified control of a control and communication device, the measured object is injected after being selected by an electrode interface device; the measured object forms a current distribution field under the excitation, and generates a boundary response signal between the remaining electrodes; the response signal is returned to the signal conditioning and acquisition device through the electrode interface device, and after analog conditioning, analog-digital conversion and frequency domain operation, boundary electrical measurement data is obtained; the control and communication device sends the boundary electrical measurement data to an external terminal for processing and obtains an image. Based on the above overall structure, the multi-electrode time division multiplexing measurement device is designed uniformly at the system level, while ensuring the integration and portability of the device, the boundary excitation, the acquisition link and the imaging processing link are integrated and cooperated, so that the portable bioelectric impedance imaging system based on AD5940 has the advantages of smaller size and convenient carrying application.

This invention discloses a method and system for constructing pore-scale models to study cation effects, the electric double layer, and local reaction environments. Addressing the problems of existing methods for CO2 electroreduction in acidic media, which rely on passive local pH regulation with high current density, suffer from low energy efficiency, and have unclear cation interaction mechanisms, this invention improves the Poisson–Nernst–Planck model by coupling the mass transfer and reaction kinetics of the Stern layer, dispersion layer, and diffusion layer. It quantitatively simulates the adsorption behavior of alkali metal cations at the electrode interface and their regulatory effect on the electric field distribution of the electric double layer. Experimental verification shows that this model can accurately predict the inhibitory effect of cations on the hydrogen evolution reaction and the enhancement of CO2 reduction selectivity. In acidic media, it increases the CO2 reduction Faraday efficiency from less than 20% to over 70%, while reducing system energy consumption by 15-30%. This solves the problems of narrow operating window and low CO2 utilization efficiency of traditional methods, providing support for the design and optimization of electrocatalytic systems.

The invention discloses a nerve block analgesia system and a control method, and the system comprises a current excitation and monitoring device which comprises a positive electrode interface and at least four negative electrode interfaces; the catheter tip is connected with the positive electrode interface of the current excitation and monitoring device; the at least four body surface electrodes are respectively connected with the at least four negative electrode interfaces of the current excitation and monitoring device; in a monitoring mode, the current excitation and monitoring device outputs a current signal with a set size through the positive electrode interface, and monitors the resistance value of each loop between the positive electrode interface and the at least four negative electrode interfaces; and determining whether the tip of the catheter shifts or not and the shifting direction according to the comparison result of the real-time resistance value of each loop and the corresponding initial resistance value. The device can act on the whole process of analgesia, including initial positioning, catheter tip displacement monitoring in an indwelling stage and dosing position offset correction during displacement.