164 results about "Electrode potential" patented technology

The invention provides an electrochemical active oxygen supply device for a washing machine and a preparation method. The device comprises a shell, a single closed reaction chamber is formed in the shell, a bifunctional anode electrode and a bifunctional cathode electrode are integrated in the reaction chamber, and a compact and uniform reaction area is formed between the anode electrode and the cathode electrode. When water flows through the reaction area, hydrogen peroxide (H2O2) and / or hydroxyl radicals (OH) are / is electrochemically generated on the surface in situ by accurately adjusting the electrode potential of the difunctional anode, so that instant generation and instant utilization of active oxygen are realized. The active oxygen directly enters a washing system of the washing machine along with water flow, bacteria, viruses and fungi can be efficiently inactivated under the normal-temperature or low-temperature washing condition without additionally adding chemical disinfectants, organic stains and peculiar smell molecules are synchronously degraded, and green, efficient and intelligent healthy washing is achieved.

The invention discloses a PH electrode intelligent calibration method and system based on a self-adaptive calibration algorithm, and relates to the technical field of intelligent calibration control, and the method comprises the steps: carrying out the preprocessing of an original potential signal of an electrode, and obtaining a standardized potential; constructing a two-channel Gaussian process model, and outputting a calibrated pH value and uncertainty in real time; inputting a reinforcement learning decision network, automatically selecting an execution action according to a comprehensive reward function of a prediction error and resource consumption, and obtaining a new sample increment; and the new sample increment is updated to the Gaussian process and reinforcement learning model, and data-driven closed-loop adaptive calibration is completed. According to the method, the calibration pH value and the uncertainty thereof are output in real time through the two-channel Gaussian process model, and automatic balance is performed between prediction errors and resource consumption in combination with the reinforcement learning decision network, so that lag and waste of fixed period calibration are avoided, reagent, energy consumption and manual maintenance cost are remarkably reduced, and the overall operation efficiency of the system is improved.

The invention discloses a secondary battery charging method based on SOC optimization, and belongs to the technical field of secondary battery charging, and the method comprises the steps: collecting and preprocessing battery pack data, determining historical charging and discharging state marks, and extracting a dynamic polarization time constant and dynamic polarization resistance; superposing a lag correction compensation amount on a preset open-circuit voltage-state-of-charge mapping curve, and determining an initial state of charge; outputting a real-time charge state by using an extended Kalman filtering algorithm model; a recursive least square method with a forgetting factor is adopted to update the capacity reference of the real-time charge state, and a corrected charge state is obtained; calculating a negative electrode surface potential estimation value through a negative electrode potential estimation model based on a single-particle model architecture; and judging to output a maximum allowable charging current instruction and a current limit value dynamic adjusting instruction. According to the method, SOC estimation is accurately optimized, battery aging is adapted, the lithium precipitation risk is evaluated in a mechanism level, dynamic adjustment of the charging current is achieved, and the charging efficiency and the cycle life of the secondary battery are both considered.

The invention provides a negative pole piece which comprises a metal layer and a silicon interface layer located on at least one side of the metal layer, the silicon interface layer comprises a material with the general formula of SiOx, x is larger than or equal to 0 and smaller than or equal to 2, and in the thickness direction of the silicon interface layer, the oxygen content of the portion, close to the metal layer, of the silicon interface layer is lower than the oxygen content of the portion, away from the metal layer, of the silicon interface layer. Compared with a metal layer, the silicon interface layer has higher negative electrode potential, formation and growth of dendritic crystals can be inhibited, and improvement of the cycle performance of the battery is facilitated.

The application relates to the technical field of a vanadium redox flow battery, in particular to a circular structure reference battery for monitoring electrode potential, which comprises an electrochemical unit and two circular units. The electrochemical unit comprises a proton exchange membrane and electrode assemblies symmetrically arranged on two sides of the proton exchange membrane; the two circular units are symmetrically arranged on the two sides of the proton exchange membrane, a closed electrode cavity is formed between the circular unit and the proton exchange membrane, the electrode assemblies are arranged in the electrode cavity, a plurality of liquid inlet hole groups uniformly distributed in the circumferential direction are arranged on the circular unit, the plurality of liquid inlet hole groups are communicated with the circumferential edge of the electrode cavity; a liquid outlet assembly is arranged on the circular unit, the liquid outlet assembly is communicated with the central area of the electrode cavity, one end of the liquid outlet assembly extends out of the circular unit, electrolyte enters from the circumferential edge area of the electrode cavity through the plurality of liquid inlet hole groups, flows radially to the central area of the electrode cavity, and then flows out from the liquid outlet assembly. The application has the effects of providing a uniform flow field and ensuring stable and reliable signals.

Disclosed are a negative electrode plate and use thereof. For the negative electrode plate provided in the present disclosure, a negative electrode active layer is coated with a safety function layer containing metal and ceramic, which effectively improve an electrode potential of a negative electrode and a nucleation energy barrier of metal lithium of a lithium-ion battery in a charging process at a low temperature and a high rate, thereby avoiding occurrence of a lithium precipitation phenomenon at the negative electrode. Because of good heat insulation performance of the ceramic, occurrence of a thermal runaway phenomenon in a nail penetration test may be effectively avoided, and safety performance of the battery may be improved. When the negative electrode plate is applied to the lithium-ion battery, the obtained lithium-ion battery has advantages of good cycling performance and high security.

The utility model relates to a three-electrode lithium ion battery, and belongs to the technical field of lithium ion batteries. The three-electrode lithium ion battery comprises a positive plate, a negative plate, a reference electrode and a diaphragm, the negative plate comprises a negative current collector and a negative active layer arranged on the negative current collector; the negative electrode active layer comprises a first active material layer and a second active material layer, the first active material layer is arranged on the negative electrode current collector, and the second active material layer is arranged on the first active material layer; the reference electrode comprises a first reference electrode and a second reference electrode; the first reference electrode is arranged between the first active material layer and the second active material layer; the second reference electrode is arranged on the second active material layer; and at least parts of the first reference electrode and the second reference electrode are positioned outside the negative plate. The reference electrode in the battery can avoid deviation of positive and negative electrode potentials caused by loss of active lithium, and can accurately monitor the top negative electrode potential and the bottom negative electrode potential.

A potentiostat architecture includes one or more feedback loops configured to regulate and maintain electrode potentials while measuring a sensing current. At least one of the feedback loops include a comparator configured to sense a voltage difference and output a signal based on the voltage difference, a digital loop filter configured to receive the signal from the comparator and output feedback digital bits related to a control, and a digital to analog convertor configured to receive the signal from the comparator and output feedback digital bits related to a control.

The invention relates to the technical field of vehicles, and discloses a circuit conduction assembly and a vehicle, the circuit conduction assembly is suitable for being electrically connected with a vehicle body conductive part, the vehicle body conductive part comprises a first element, and the standard electrode potential of the first element is E1; comprising a conductive terminal, the conductive terminal comprises a second element, the standard electrode potential of the second element is E2, and E2 is larger than E1; the insulating part is arranged between the vehicle body conductive part and the conductive terminal in an insulating manner so as to prevent direct contact between the vehicle body conductive part and the conductive terminal; and the conduction piece is connected with the vehicle body conductive part and the conductive terminal and comprises a third element, the standard electrode potential of the third element is E3, and E3 is larger than E1 and smaller than E2. According to the circuit conduction assembly provided by the invention, the conductive part of the vehicle body is isolated from the conductive terminal by using the insulating part, the occurrence of galvanic corrosion is inhibited, the conduction part is used as a bridge of a current path, and the conduction part selects a third element of which the standard electrode potential E3 is between E1 and E2, so that the occurrence probability of galvanic corrosion is reduced.

The invention discloses a non-intrusive sewage pH measuring method based on an electrical impedance tomography technology, which comprises the following steps of: based on an electromagnetic field theory, acquiring a sewage boundary electric signal through the electrical impedance tomography technology, establishing theoretical correlation between pH and electrode potential by combining a Nernst equation, constructing a constitutive equation, and finally, inverting a pH value by measuring the boundary electric signal, so as to measure the pH value of the sewage. Therefore, a measurement mode which does not need to intrude into a pipeline and avoids pollution and interference is realized, the defects that a traditional electrode is fragile and difficult to miniaturize, and an optical fiber sensor is easily disturbed by the environment and is complex in high-precision assembly are overcome, the influence of the complex environment of a water body is avoided, and the measurement and calculation precision of the pH is improved.

The invention discloses an anti-corrosion control method and device of an air conditioner, the air conditioner, a storage medium and a computer program product, a sacrificial anode and an auxiliary anode are arranged at a protected metal part of the air conditioner, and the sacrificial anode can spontaneously output current through an electrode potential difference; the auxiliary anode is used for outputting controllable current and comprises a constant potential output mode, a constant current output mode and an intermittent current output mode; the constant potential output mode can adjust the controllable current, so that the surface potential of the protected metal part is stable; the constant current output mode can fix the controllable current at a preset current value; the intermittent current output mode can control the output and stop of the controllable current; the method comprises the steps that corrosion related parameters of the environment where the air conditioner is located are obtained, and the corrosion risk level of the current environment is evaluated according to the corrosion related parameters; and controlling the current output mode of the auxiliary anode and the starting state of the sacrificial anode according to the corrosion risk level. Therefore, the adaptive capacity of the air conditioner anti-corrosion strategy to the outdoor corrosion risk is improved.

A method for improving the accuracy of pH value detection using an antimony-based pH electrode, belonging to the field of pH value detection technology, includes: measuring the dissolved oxygen concentration of the test solution; comparing this dissolved oxygen concentration with the dissolved oxygen concentration of the standard buffer solution used during pH sensor calibration; when the two dissolved oxygen concentrations differ, dissolved oxygen potential compensation is required: multiplying the difference between the two dissolved oxygen concentrations by a dissolved oxygen concentration compensation coefficient to obtain a dissolved oxygen potential compensation value; and using this dissolved oxygen potential compensation value to compensate the electrode potential of the antimony-based pH electrode in the test solution, thereby achieving accurate pH value measurement. This invention improves the measurement accuracy of the antimony-based pH electrode and the accuracy of in-situ pH value monitoring results through dissolved oxygen potential compensation.

A method for determining the presence of chromium-6 (Cr-6) in a solid sample is described, comprising the steps of contacting the solid sample with a destruction liquid under conditions in which the Cr-6 of the solid sample dissolves in the destruction liquid as a chromate, providing a test solution; subjecting the test solution obtained in step (1) to a specific Cr-6 detection reaction, under conditions in which the presence of Cr-6 is detected; and detecting whether the specific Cr-6 reaction occurred in step (2); wherein the destruction liquid comprises an oxidant, which has a standard electrode potential E0 higher than the chromate.

The application relates to the technical field of electrochemical detection, and specifically discloses an ammonium sulfate PH calculation method based on an electrochemical principle and a temperature compensation technology, which comprises the following steps: collecting a non-standard state electrode potential signal and an NTC thermistor real-time resistance signal of an ammonium sulfate solution to be measured; using an improved temperature fitting algorithm based on a temperature-resistance nonlinear relationship and an optimized fitting process to convert an actual thermodynamic temperature of the solution; combining the actual thermodynamic temperature to compensate the non-standard state electrode potential signal, eliminating the interference of temperature change on the potential measurement; and substituting the compensated electrode potential value and the thermodynamic temperature into a simplified expression of the Nernst equation to inversely solve the hydrogen ion concentration, and then obtaining the final PH value of the ammonium sulfate solution through negative logarithm operation. The method optimizes the temperature fitting precision and the electrode potential compensation adaptability, and improves the PH measurement deviation problem of the ammonium sulfate solution.

The application discloses an antibacterial composite metal coating based on protective area etching and galvanic corrosion and a preparation method and equipment thereof, and the method comprises the following steps: 1) forming a composite coating by vapor depositing a metal transition layer with a standard electrode potential higher than silver, a silver island intermediate layer and electrochemically depositing a silver layer on the surface of a pretreated titanium-based equipment; 2) performing isolation line etching on the outside of the coating area boundary of the equipment surface by laser; 3) preparing a hydrophobic protective coating on the surface of the reserved coating area; 4) filling paraffin in the isolation line groove to form a temporary hole sealing layer; 5) immersing the equipment in an acidic electrolyte to selectively dissolve the coating in the to-be-stripped area in a sectional stripping mode; 6) removing the paraffin in the isolation line groove and performing trimming by laser; and 7) obtaining the coating material after mechanical polishing, cleaning, drying, vacuum packaging and radiation sterilization. The high-strength coating can realize efficient sterilization through the galvanic corrosion effect and prevent coating abrasion during use.

The invention discloses a self-feedback intelligent electrochemical wastewater treatment platform and a construction method thereof. The platform modularly integrates an electrochemical water treatment unit, a terephthalic acid probe molecular fluorescence sensing unit, a signal acquisition data processing unit and an electro-hydraulic linkage online control unit. All the units work cooperatively, and the electrochemical water treatment unit generates strong oxidizing hydroxyl radical mineralized pollutants; the fluorescence sensing and data processing unit is used for converting. OH specificity into a fluorescence signal by utilizing probe molecules and mapping the fluorescence signal into. OH steady-state equivalent concentration in real time; and the online control unit implements a model prediction control strategy based on concentration feedback, dynamically adjusts the current density, the electrode potential and the wastewater flow, and realizes real-time adaptive matching of the interface mass transfer and the. OH generation rate. According to the invention, electrogenerated. OH on-line monitoring and dynamic closed-loop optimization of operation parameters are realized, deep mineralization, low energy consumption and long-term stable operation are realized, and the method is suitable for engineering and intelligent operation of electrochemical advanced oxidation treatment of industrial wastewater.

The invention discloses a method for testing lithium precipitation potentials of a three-electrode cell under different multiplying powers. The method comprises the following steps: providing the three-electrode cell; charging the battery cell according to a preset rate, after charging 1% of SOC every time, standing to relax the battery cell, recording positive and negative electrode voltages before and after relaxation, obtaining a DCR corresponding to each 1% of SOC, and making an SOC-DCR curve under the current rate; meanwhile, in the charging process of the battery cell, recording the negative electrode pair reference voltage of the battery cell, and obtaining a negative electrode potential curve under the current multiplying power; an inflection point with the DCR obviously reduced is searched in the SOC-DCR curve, the SOC corresponding to the inflection point is the lithium precipitation SOC under the current multiplying power, and then the lithium precipitation potential under the current multiplying power is determined according to the lithium precipitation SOC on the negative electrode potential curve. The test method can accurately determine the critical lithium precipitation potentials corresponding to different multiplying power charging under the condition of not disassembling the battery cell, and can accurately identify the corresponding lithium precipitation potentials at the large multiplying power and the small multiplying power at the same time.

This invention discloses a light-emitting device, a display panel, and a display apparatus. In one specific embodiment, the light-emitting device includes a first electrode, a second electrode, and an organic functional layer disposed between the first electrode and the second electrode. The organic functional layer includes a light-emitting layer and an organic material layer. The organic material layer includes polar molecules, and the dipole moment of the polar molecules in the organic material layer is greater than the dipole moment of the molecules in its adjacent film layers. This embodiment, by setting an organic material layer with strong molecular polarity, can enhance the induced capacitance of the device and reduce the magnitude of the first electrode potential rise caused by the leakage current of the thin-film transistor in the off-state pixel, thereby improving the pixel light leakage phenomenon.

The invention belongs to the technical field of electrochromic materials, and particularly relates to an improved three-electrode electrochromic device and a preparation method thereof. The three-electrode electrochromic device comprises two transparent conductive substrates, wherein an electrochromic layer and a liquid electrolyte are clamped between the two transparent conductive substrates; the transparent conductive substrate is divided into a working electrode region, a counter electrode region and a reference electrode region by etching lines; the electrochromic layer is in contact with the working electrode area and the liquid electrolyte and is not in contact with the reference electrode area. According to the electrochromic device, an ion storage layer is omitted, the electrolyte can achieve dynamic ion balance, and the coloring and fading response speed of the electrochromic device is remarkably increased. The device calibrates the potential of the working electrode in real time through the reference electrode, and the overall cycling stability of the device is improved.

The application provides a semiconductor process chamber, which comprises a cavity, an upper electrode assembly, a susceptor and a lower electrode assembly. The susceptor is arranged in the cavity and used for carrying a wafer. The upper electrode assembly is used for providing a radio frequency signal to a process gas in the cavity to excite the process gas in the cavity to form a plasma. The susceptor has a lower electrode inside. The lower electrode assembly is connected between the lower electrode and a ground terminal and used for adjusting an impedance connected between the lower electrode and the ground terminal to keep the lower electrode at a preset potential. In the application, the lower electrode assembly can adjust a radio frequency voltage division ratio between upper and lower impedances of the lower electrode by adjusting the impedance connected between the lower electrode and the ground terminal, so that the potential of the lower electrode can be kept at a required preset potential without introducing new radio frequency power. The radio frequency power has a reduced influence on plasma damage to the wafer and on plasma distribution above the wafer. The application also provides a method for controlling a lower electrode potential.

The present application provides a kind of can inhibit life reduction's human-powered vehicle's assembly and gear.The human-powered vehicle's assembly includes: shell;And installation part, it is configured to be provided in shell, is installed in the support portion of human-powered vehicle by fastener, installation part includes: metal base;Metal connecting portion, it is configured to be provided in base and be connected with fastener;And intermediate portion, it is provided between connecting portion and base, base includes the first material with first standard electrode potential, connecting portion includes the second material with second standard electrode potential, intermediate portion is formed by third material or fourth material with electric insulating property, the third material has third standard electrode potential, and the difference between third standard electrode potential and first standard electrode potential and the difference between third standard electrode potential and second standard electrode potential is less than the difference between first standard electrode potential and second standard electrode potential respectively.

A system and method for forming a micro-object density distribution (how densely micro-objects are assembled in a particular spatial region) are provided. [Solution] A high-speed camera tracks the existing object density distribution. An array of phototransistor-controlled electrodes is used to generate a dynamic potential energy terrain for manipulating objects with both DEP and EP forces, and a video projector is used to actuate the array. One or more computing devices are used to process images captured by the camera, estimate the existing density distribution of objects, receive a desired density distribution of micro-objects, define a model that describes the variation in micro-object density over time due to capacitance-based interactions, generate an array of electrode potentials that minimizes the error between the existing density distribution and the desired density distribution, and use the array of electrode potentials to actuate the electrodes.

This invention relates to the fields of environmental pollution remediation and biocatalysis, and provides a method for preparing a self-supplied H2O2 cathode material via an electroenzyme cascade and its application. The cathode material is an ionic liquid-modified CPO-IL. EMB The bio-hybrid material formed by immobilizing molybdenum disulfide-modified MoS2@Co-CNNT composite material, namely CPO-IL EMB / MoS2@Co-CNNT. An electroenzyme cascade degradation system was constructed using this biohybrid material as the cathode. By controlling the electrode potential, controllable H2O2 generation was achieved while protecting the Fe(III) in the iron porphyrin ring of CPO from reduction, thus maintaining the intrinsic oxidative activity of the enzyme. The in-situ generated H2O2 activates CPO-IL. EMB It efficiently catalyzes the oxidative degradation of mesotrione. This invention requires no external CPO-IL. EMB It is green and environmentally friendly, with high degradation efficiency, and has promising applications in agricultural wastewater treatment and environmental remediation.

The invention provides a battery lithium precipitation judgment method and system, and relates to the technical field of battery safety management. The method comprises the following steps: acquiring working condition parameters of a battery in real time, wherein the working condition parameters at least comprise battery voltage and charging current; estimating the cathode potential of the battery based on the working condition parameters; obtaining a lithium precipitation judgment threshold dynamically calibrated based on the current state parameter of the battery; and judging whether lithium precipitation occurs in the battery or not by comparing the negative electrode potential with the lithium precipitation judgment threshold value. According to the method, the dynamically calibrated lithium precipitation judgment threshold is introduced, so that the judgment standard can adapt to key variables such as the actual working temperature and the health state of the battery, and misjudgment and missed judgment caused by working condition changes in a single voltage curve analysis method are remarkably reduced; and the accuracy and the robustness of lithium precipitation judgment in a complex practical application scene are greatly improved.

To suppress reductive decomposition of a nonaqueous solvent and / or a binder in initial charging of a secondary battery using a nonaqueous electrolyte.SOLUTION: A negative electrode sheet for a secondary battery using a nonaqueous electrolyte solution includes a negative electrode active material, a binder, and an SEI forming agent. A standard electrode potential of the SEI-forming agent is higher than a standard electrode potential of a nonaqueous solvent contained in the nonaqueous electrolyte solution.SELECTED DRAWING: Figure 4

The application discloses a kind of ocean reinforced concrete corrosion rate measuring system and method based on UWFBG, system includes optical fiber strain acquisition transmission module, optical fiber data processing analysis module, monitoring result real-time output module, marine environment simulation module, quantitative contrast determination module, corrosion electrode potential comparison monitoring module and the reinforced concrete with sensing optical fiber;Method is, the center wavelength drift of the UWFBG measuring point on the surface of reinforced concrete is obtained, and the surface net strain value is obtained;Establish steel-NaCl solution-carbon rod-direct current constant voltage power supply loop, record the mass loss rate of steel and corrosion electrode potential, establish the relationship curve of fiber measurement strain value-mass loss rate-corrosion electrode potential, according to the conversion of rust expansion strain and steel corrosion mass loss established, corrosion process is cross-validated by corrosion electrode potential change;Realize the corrosion rate measurement and verification of reinforced concrete structure in marine environment in real time, quantitatively, quasi-distributed.

The invention provides a negative electrode sheet, a secondary battery comprising the negative electrode sheet, and a manufacturing method of the negative electrode sheet. The purpose of the present invention is to suppress reductive decomposition of a non-aqueous solvent and / or a binder in initial charging of a secondary battery using a non-aqueous electrolyte solution. A negative electrode sheet for a secondary battery using a non-aqueous electrolyte solution includes a negative electrode active material, a binder, and an SEI-forming agent. The standard electrode potential of the SEI-forming agent is higher than the standard electrode potential of the non-aqueous solvent contained in the non-aqueous electrolyte solution.

The invention discloses a negative pole piece for a lithium battery, a negative pole piece preparation method and a battery monomer. The negative pole piece comprises a negative current collector; and the artificial interface protection layer is positioned on at least one side of the negative electrode current collector and comprises a composite framework structure consisting of lithium fluoride and a lithiated carbon-based compound. The negative pole piece can fully utilize the advantages of low electrode potential and high theoretical specific capacity when metal lithium is used as a negative pole material, and the cycle performance and the safety performance of a battery monomer are improved on the basis.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a floating charge control method for prolonging the calendar life of a lithium ion battery. The invention aims to solve the problem of capacity fading caused by continuous thermodynamic degradation of a negative electrode solid electrolyte interface film (SEI) when the lithium ion battery is subjected to long-term floating charge or standing in a high state of charge (SOC) in the prior art. The method comprises the following steps: when the battery enters a high SOC floating charge or standing state, maintaining the potential of a graphite negative electrode above a preset stable voltage threshold value which is a positive value relative to metal lithium / lithium ions (Li / Li < + >) by accurately controlling the charging process of the battery. By keeping the potential of the negative electrode in the micro-positive interval, the continuous reduction reaction of the electrolyte on the surface of the negative electrode can be effectively inhibited, and the thickening and degradation of an SEI film are slowed down, so that the irreversible loss of active lithium is remarkably reduced, the calendar life of the battery is prolonged, and the high capacity is kept.

This invention belongs to the field of rechargeable battery technology, specifically relating to a reference electrode, a method for preparing a long-life three-electrode battery, and a method for restoring battery capacity. This invention proposes a method for preparing, processing, and applying a sheet-like reference electrode, enabling large-scale mass production. It allows for stable monitoring of the positive and negative electrode potentials within the battery during long-term service, improves battery cycle life, and allows for the replenishment of additional active lithium / sodium to restore battery capacity after aging is determined. Therefore, this method can directly obtain internal battery information and improve battery cycle performance, providing a solution for the development and commercial application of novel battery management systems and cells.