215 results about "Ion energy" patented technology

The invention belongs to the technical field of batteries, and particularly relates to a waste oil mediated preparation method of a whole-domain low-defect pseudographite domain-rich hard carbon material and a method and high-rate sodium ion energy storage. The preparation method comprises the following steps: uniformly mixing and stirring dried biomass and waste grease, putting the mixture into a tubular furnace, heating under protective gas, carrying out high-temperature carbonization, washing with a diluted hydrochloric acid solution and deionized water in sequence, and drying to obtain the waste oil mediated whole-domain low-defect pseudo-graphite domain high-rate hard carbon negative electrode material. According to the waste oil mediated global low-defect and pseudo-graphite domain-enriched high-rate hard carbon negative electrode material obtained by the invention, the structural stability of the material in an ion intercalation / deintercalation process is enhanced, the cycle life of an electrode is effectively prolonged, the high-rate performance of the material can be considered while the platform capacity is ensured, and the service life of the material is prolonged. And it is ensured that the electrode can still maintain high capacity output and good cycling stability under the large-current charging and discharging condition.

The invention discloses a graphene / polyaniline composite film with a gradient structure and a preparation method and application thereof, the preparation method comprises the following steps: S1, preparing a coating template, and uniformly coating the coating template with a graphene oxide dispersion liquid to obtain a graphene oxide porous template; s2, performing electrochemical reduction on the graphene oxide porous template to obtain a reduced graphene oxide porous template; and S3, carrying out polyaniline electrodeposition on the reduced graphene oxide porous template to obtain the graphene / polyaniline composite film with a gradient structure. The graphene / polyaniline composite film prepared by the invention has a gradient structure, and can improve various ion energy storage characteristics and conductivity of the material.

The invention belongs to the technical field of energy storage system state monitoring, and provides a lithium ion energy storage system abnormal state identification method and system based on impedance spectrum analysis, and the method comprises the steps: carrying out the decoupling of voltage response data and current response data through employing an excitation-response decoupling algorithm under a dynamic working condition, and obtaining an impedance spectrum; obtaining a voltage response component and a current response component; obtaining the total impedance spectrum of the lithium ion energy storage system under the current working condition; constructing a system-level impedance cloud picture; calculating a difference value between the current impedance spectrum and the weighted moving average baseline spectrum based on the system-level impedance cloud atlas to obtain an enhanced difference cloud atlas; and performing non-uniform segmentation and feature extraction on the enhanced difference cloud picture by using a visual Transform model oriented to electrochemical prior to obtain a multi-dimensional abnormal probability vector, and obtaining an abnormal state type of the lithium ion energy storage system based on the multi-dimensional abnormal probability vector. According to the technical scheme, the accuracy, timeliness and reliability of abnormal state recognition of the energy storage system are remarkably improved.

The invention discloses a sodium ion energy storage system dynamic load management method and system based on an intelligent algorithm, and relates to the technical field of battery management. Comprising the following steps: determining an initial thermal risk area through a thermal management model, obtaining a thermal risk score of each single battery at the same time, and determining a final thermal risk area from the initial thermal risk area; adjusting the thermal risk score through the state parameter of each single battery, and generating early warning information according to the adjusted thermal risk score; and according to the final thermal risk area and the early warning information, adjusting the charging and discharging rate and load distribution of each single battery. The state data of the single batteries are obtained through real-time monitoring, the working state of each single battery is accurately controlled, and it is ensured that the single batteries operate in the optimal working interval, so that unnecessary energy loss is reduced, and the energy conversion efficiency of the whole system is improved.

Embodiments of the present disclosure include apparatuses and methods for controlling plasma uniformity by controlling plasma density in a bulk plasma over a central region and a circumferential edge region of a substrate. Plasma uniformity may be controlled during plasma processing by using an RF tuning circuit coupled to one of a plurality of electrodes positioned relative to a substrate. By adjusting the electrical characteristics of at least one of the RF tuning circuits, the effect of the generated RF fundamental frequency and associated RF harmonic frequency on the plasma processing results can be controlled. Beneficially, one or more of the use of the tuning circuit and methods of using the tuning circuit may be used to provide individual tuning knobs to control reactive neutral concentration, ion energy and angular distribution, ion direction and direction uniformity, as well as to individually control ion flux and reactive neutral uniformity on a substrate surface.

Novel electrolyte compositions for lithium ion energy storage devices with silicon-based electrode materials have improved stability. The electrolyte composition may be used in an energy storage device that includes a first electrode and a second electrode, where at least one of the first electrode and the second electrode is a silicon-based electrode; a separator between the first electrode and the second electrode; and the electrolyte composition.

The present application relates to the technical field of energy storage devices, and particularly relates to a sodium supplement, a positive plate, a preparation method of the positive plate and an electric device. The composite sodium supplement is located in the positive plate of a sodium ion energy storage device, and the composite sodium supplement comprises: a first sodium supplement and a second sodium supplement, the first sodium supplement has a first oxidation potential, the second sodium supplement has a second oxidation potential, the first oxidation potential is less than 3.9V, and the second oxidation potential is 3.9V-4.4V. Since the composite sodium supplement is arranged in the positive plate, the composite sodium supplement has the advantages of easy operation and processing, reduced processing procedures, no harsh processing conditions and the like, and can realize industrial application. In addition, the composite sodium supplement has a relatively comprehensive sodium supplement function, can form a certain oxidation potential gradient, and realizes the effect of gradient sodium supplement. The sodium ion energy storage device can realize full-stage sodium supplement from the initialization stage to the subsequent cycle charging and discharging stage, and then the electrochemical performance of the sodium ion energy storage device is improved from the entire process of formation to cycle charging and discharging.

The present application relates to the technical field of negative electrode materials of batteries, and in particular relates to a porous composite elastomer and silicon-carbon, and preparation methods therefor and the use thereof. The present application provides a porous composite elastomer, which is of a porous structure, and comprises a flexible body and a rigid body, which are interpenetrating, wherein the raw material of the flexible body comprises carbon nanotubes, and the rigid body comprises hard carbon. In the present application, a silicon-carbon composite material is prepared by using carbon nanotubes and hard carbon as carbon sources and compounding same with silicon; and compared with a conventional silicon-carbon composite material, the carbon nanotubes, serving as a bridge between the silicon and the hard carbon, can effectively improve the conductivity and the ion conducting energy, thereby improving the rate capability of a negative electrode material.

A plasma-enhanced atomic layer deposition method and the associated reactor, the method including a supply of a substrate into a plasma reactor including a reaction chamber, and a plurality of atomic layer deposition cycles on the exposed surface of the substrate, including an injection in the reaction chamber of a precursor based on a first species, a plasma treatment of the exposed surface of the substrate by a plasma by capacity coupling between the plate and the lateral wall of the reaction chamber, by applying a radiofrequency power to the plate. Capacitive coupling makes it possible to create a plasma localised in the vicinity of the substrate, at low and finely adjustable ion energy and density.

A method for applying RF power in a plasma process chamber is provided, including: generating a first RF signal; generating a second RF signal; generating a third RF signal; wherein the first, second, and third RF signals are generated at different frequencies; combining the first, second and third RF signals to generate a combined RF signal, wherein a wave shape of the combined RF signal is configured to approximate a sloped square wave shape; applying the combined RF signal to a chuck in the plasma process chamber.

A sodium-ion energy storage apparatus is provided, including: a positive electrode, a negative electrode, a separator, and an electrolyte; a positive electrode active material of the positive electrode includes Ce1-xMxO2, M is at least one metal and 0.01≤x≤0.25; and a negative electrode active material of the negative electrode includes a sodium source that generates sodium ions. The positive electrode of the present disclosure uses Ce1-xMxO2 obtained by doping CeO2 with the metal M as the positive electrode, and the capacity is increased by two to three times compared to undoping.

The invention discloses lithium ion energy storage battery over-temperature protection and multi-dimensional safety management and control integrated equipment, and belongs to the technical field of battery over-temperature protection. And the multiple sets of buffering mechanisms are arranged, and the multiple sets of buffering mechanisms are all arranged in the protection outer box. According to the lithium ion energy storage battery over-temperature protection and multi-dimensional safety management and control integrated equipment, through the use of the high-temperature pressure relief mechanism, when the battery is in thermal runaway and the internal pressure is suddenly increased, a pure mechanical pressure relief sealing structure is burst open, the response speed is far higher than that of an electric control system needing to be recognized by a sensor, and a high-pressure jet flow generates negative pressure when passing through a throat; the fire extinguishing dry powder is automatically sucked out from the dry powder cavity, no external instruction or power is needed in the process, seamless connection of pressure relief, namely fire extinguishing is achieved, the dry powder is violently mixed with the high-temperature jet flow in the pressure relief channel, a large amount of heat can be instantly absorbed, the temperature of the jet flow can be reduced, open fire can be directly extinguished, and fire is effectively prevented from spreading in the box.

A radiation device comprises at least a vacuum chamber (1), an electromagnetic accelerator (8) for generating a primary energy beam of ions inside the vacuum chamber (1), and a layer of material (S) carried by a support (4) rotating in the vacuum chamber (1) to generate a flow of particles when a series of nuclear fusion reactions are triggered on the material (S) thanks to the energy of said beam, and wherein the support (4) is hollow and sealed defining a rotating three-dimensional surface that surrounds a containment volume for a cooling liquid in heat exchange with the layer of material (S), such rotating three-dimensional surface defining a heat exchange surface wetted by the liquid, and wherein a level of the free surface of the liquid on the heat exchange surface moves upwards in use due to the action of the centrifugal acceleration generated by the rotation of the support (4).

This disclosure describes systems, methods, and apparatus for controlling ion energy in a plasma processing chamber. In particular, a system for plasma processing includes a plasma processing chamber, a plasma source coupled to the plasma processing chamber, a plasma power supply coupled to the plasma source that is configured to apply power to the plasma processing chamber in periodic pulse envelopes to control a density of a plasma in the plasma processing chamber, and a support within the plasma processing chamber to support a substrate. A bias supply is configured to provide a modified periodic voltage function to the substrate support within each of the periodic pulse envelopes to control an energy of ions impacting the substrate support in the plasma processing chamber.

The invention relates to the technical field of energy storage fire fighting, in particular to an intelligent lithium ion energy storage cabinet fire fighting system and a multistage early warning method, and the system comprises a thermoelectric anomaly identification module, a risk concentration area verification module, a fire extinguishing path selection module, a target action triggering module and a region state judgment module. According to the method, consistency retrieval is carried out on signal direction changes of a battery core heat release position, a connection bar contact point position and an energy storage cabinet top detector position, abnormal area judgment is completed in combination with coordinate numbers, peripheral numbers are extracted, direction consistency is compared, an aggregation number range is constructed, nozzle path numbers are matched, and paths meeting requirements are screened; a control signal is sent to extract a feedback state comparison instruction and action response, and the closed state is checked in combination with the continuous change trend of a temperature gas signal, so that the abnormal source position judgment is reliable, the number screening is complete, the path coverage matching is sufficient, the action response checking is in place, and the fire-fighting task closed state information is complete.

The application provides an organic small-molecule electrolyte additive and application, and relates to the technical field of batteries. The organic small molecule is a carbon-containing three-membered ring alcohol small molecule, specifically, cyclopropanol, and the content of the electrolyte additive is 1%-10% v / v. Due to the metastable three-membered ring structure in the molecular structure of cyclopropanol, the ring-opening reaction is easily generated in the charging and discharging process, the electrode / electrolyte interface structure is reshaped, and the electrochemical performance is improved. Compared with conventional isopropyl alcohol, the cyclopropanol of the application can achieve the effect that excellent electrochemical performance can be presented only by adding a small amount of additive. The cyclopropanol has water solubility and organic co-solubility, and can form a uniform solution, and can be used in monovalent to multivalent ion energy storage systems of lithium, sodium, potassium, zinc, calcium, magnesium, cadmium, tin, aluminum, iron and the like, and will not have a negative impact on the solubility of the electrolyte, maintaining the high ionic conductivity of the electrolyte, which is simple, low in cost and good in application prospect.

The application discloses a multi-frequency harmonic injection system and method of a radio frequency power supply, comprising: a signal generating device configured to generate a target fundamental frequency component and at least one target harmonic component synchronized with the target fundamental frequency component, and output a multi-frequency radio frequency signal containing the target fundamental frequency component and the target harmonic component; a sampling device configured to sample the multi-frequency radio frequency signal to obtain a sampling signal; a signal processing device configured to separate an actual fundamental frequency component and an actual harmonic component from the sampling signal; and a control device configured to adjust the amplitude ratio and / or the phase between the target fundamental frequency component and the target harmonic component according to the amplitude and the phase of the actual fundamental frequency component and the actual harmonic component. The application realizes precise adjustment of plasma ion energy, waveform stability, process uniformity and reliability improvement through multi-frequency harmonic synchronous generation, real-time closed-loop regulation and decoupling control of ion energy-flux.

The invention discloses a hybrid energy storage cooperative control method and system for stabilizing new energy fluctuation, and belongs to the technical field of energy storage control, and the method comprises the steps: collecting new energy output data and electric load data on a power supply bus in real time, and calculating a stabilizing error; decomposing the stabilizing error into a high-frequency power instruction, an intermediate-frequency power instruction and a low-frequency power instruction by adopting a variable filtering time constant method; the high-frequency power instruction is sent to a bidirectional converter of a super capacitor, the intermediate-frequency power instruction is sent to a bidirectional converter of lithium ion energy storage, and the low-frequency power instruction is sent to a heat pump electricity storage system; energy storage states of the three hybrid energy storage systems are obtained, and a filtering time constant of a coupling control layer is periodically updated according to a preset safety threshold; through operation strategies of the system super capacitor, the lithium ion energy storage system and the heat pump power storage system, fluctuation stabilization of photovoltaic, wind power and other new energy power stations in different time scales is achieved, and stable output of energy and safe and reliable operation of a power grid are guaranteed.

A method for plasma processing a substrate includes: sustaining a plasma in a plasma processing chamber, the plasma processing chamber including a first electrode and a second electrode, where sustaining the plasma includes: coupling a source signal to the first electrode; and applying a bias signal to the second electrode, the bias signal having a spike waveform including a plurality of bias pulses, each of the bias pulses including a DC base voltage for a base duration and a triangular voltage spike having a rise time from the base voltage to a peak voltage and a fall time from the peak voltage to the base voltage, a sum of the rise time, the fall time, and the base duration including a pulse period, the applying including: independently adjusting the rise time and fall time to obtain a narrow energy spread of a mode at a high modal energy in an ion energy distribution function (IEDF) of an ion flux incident on the substrate, the narrow energy spread including a first width of the high energy mode of the IEDF that is smaller than a second width of the high energy mode of the IEDF obtainable using a rectangular pulse waveform.

Embodiments of the present disclosure include apparatus and methods for controlling plasma uniformity by controlling plasma density in a bulk plasma across the center and peripheral edge regions of a substrate. Plasma uniformity can be controlled by using an RF tuning circuit coupled to one of multiple electrodes positioned relative to the substrate during plasma processing. Adjusting at least one electrical characteristic of the RF tuning circuit can control the effect of the generated RF fundamental frequency and associated RF harmonic frequencies on plasma processing results. Beneficially, one or more of the tuning circuits and methods of using the tuning circuits can be used to control reactive neutral species concentration, ion energy and angular distribution, ion directionality and directional uniformity, providing individual adjustment knobs for individually controlling ion flux and reactive neutral species uniformity across the surface of the substrate.

The application discloses an online proton imaging ion spectrometer diagnosis system, relates to the fields of plasma physics and nuclear detection, and comprises an online proton imaging module, an online Thomson ion spectrometer module and a shielding aiming module; the shielding aiming module comprises a shielding cavity and an aiming laser pen; the online proton imaging module comprises a metal filter, a first scintillator and two proton imaging acquisition assemblies; the proton imaging acquisition assembly comprises a first optical fiber panel attached to the first scintillator and a first CMOS sensor attached to the first optical fiber panel; the online Thomson ion spectrometer module comprises an ion beam deflection mechanism and an ion spectrum diagnosis acquisition assembly; the ion spectrum diagnosis acquisition assembly comprises a light-proof aluminum film, a second scintillator, a second optical fiber panel and a second CMOS sensor which are sequentially and superposedly arranged. The application reduces the size of the whole system, can simultaneously carry out online proton imaging and ion energy spectrum diagnosis, and can effectively prevent radiation damage to the CMOS chip.

To provide a technique for controlling energy of ions supplied from plasma to a substrate.SOLUTION: In the plasma processing apparatus according to an exemplary embodiment, a pulsed negative direct-current voltage is periodically applied to a lower electrode. A frequency defining the period in which the pulsed negative direct-current voltage is applied to the lower electrode is lower than the frequency of high-frequency power supplied to generate plasma. The high-frequency power is supplied during a first partial period within the period. The power level of the high-frequency power in a second partial period within the period is set to a power level reduced from the power level of the high-frequency power in the first partial period.SELECTED DRAWING: Figure 1

The invention relates to the technical field of energy storage and power supply, in particular to an intelligent power supply method and device for a sodium ion energy storage system. The method comprises the following steps: acquiring real-time operation data of the sodium ion energy storage system; performing battery pack state extraction on the real-time operation data to obtain a battery state data set; obtaining battery pack structure data; analyzing the diffusion rate and porosity of the battery pack structure data, and calculating the maximum diffusion rate of sodium ions according to the charge state and the electrode fractal structure characteristic data; pulse charging of the sodium ion energy storage system is dynamically adjusted through the maximum diffusion rate and the voltage fluctuation rate of sodium ions, and pulse charging control parameters are obtained; the power supply precision, the response speed and the operation efficiency of the sodium ion energy storage system are improved by utilizing the technologies of battery state multi-dimensional data extraction, electrode fractal structure analysis, diffusion rate dynamic calculation, self-adaptive pulse charging control and the like.

The invention relates to the technical field of plasma detection, in particular to a dual-channel ion energy probe based on a magnetic deflection effect. The invention provides a dual-channel ion energy probe based on a magnetic deflection effect. The dual-channel ion energy probe comprises an upper permanent magnet plate, a lower permanent magnet plate, a dual-channel collimator and a dual-channel probe, the dual-channel collimator penetrates into the shell and comprises a scanning channel and a reference channel, the scanning channel and the reference channel are connected with voltages of different values, the dual-channel collimator is used for enabling ions to enter the shell along the channel direction, and the upper permanent magnet plate and the lower permanent magnet plate are respectively fixed at the upper end and the lower end of the shell to form a uniform magnetic field. The dual-channel probe is arranged in the shell and comprises a scanning collection probe coplanar with the scanning channel and a reference collection probe coplanar with the reference channel, and the scanning collection probe and the reference collection probe are connected with voltages of different values respectively. According to the scheme, the ion current probe with a high signal-to-noise ratio can be provided.

The utility model discloses a negative ion energy-saving lamp, which relates to the technical field of energy-saving lamps and is characterized by comprising a lamp holder and a negative ion lamp tube fixedly mounted at the bottom of the lamp holder, a radiating and cooling mechanism is arranged on the lamp holder and comprises an air box fixedly mounted on the outer circular surface of the lamp holder, and a refrigerating sheet is fixedly mounted on the inner wall of the air box. The radiating and cooling mechanism is arranged, the semiconductor chilling plate is used for actively cooling airflow, the directional cold air circulating system driven by the micro air pump is combined, the annular cold air outlets of the inner and outer air rings uniformly cover the inner and outer surfaces of the lamp tube, and the problems of lamp tube aging, deformation and element damage caused by local heat accumulation are solved; the surrounding type three-dimensional cooling air channel formed by flow division of the flow guide pipe covers a core heating area, the dynamic adjustable airflow intensity is combined, the heat dissipation efficiency and energy efficiency are remarkably improved, potential safety hazards caused by insufficient heat dissipation of a traditional lamp are avoided, energy consumption is reduced, and the service life is prolonged.

The invention discloses a doped bimetallic sulfide sodium ion negative electrode material, a preparation method and application thereof, and a sodium ion battery, and relates to the technical field of sodium batteries. The sodium ion negative electrode material has the following general formula: Cu < 3-x > Zn < x > Nb < 1-x > Ti < x > S4, x is greater than or equal to 0 and less than 0.5, the negative electrode material belongs to a tetragonal crystal system and has an ordered vacancy avendite structure, the sodium ion negative electrode material is granular, the average particle size is 0.2-20 microns, the specific capacity of the negative electrode material is 400-800 mAh / g, and the cycle life of 300-5000 times under the high current density of 1 A / g can be realized. The invention also provides a preparation method of the sodium ion negative electrode material, the sodium ion negative electrode material is mainly obtained by using a high-temperature solid-phase reaction, the method abandons the use of hazardous chemical reagents, the preparation condition requirements are simple, and the prepared sodium ion negative electrode material has the advantages of controllable structure and morphology, stable electrochemical performance and the like. The method can be used in the field of electrochemical sodium ion energy storage.

The invention discloses a 3D printing nanometer microbattery composite electrode material and a preparation method thereof, belongs to the technical field of batteries, and constructs a novel 3D printing V2O5-Ti3C2-Au nanometer composite electrode material which is used for high-performance lithium ion energy storage. The nano composite material has a layered heterostructure, V2O5 is connected with Ti3C2MXene through a defect-rich TiO2 intermediate layer, and the Ti3C2MXene intermediate layer can anchor oxide, so that lattice mismatch is reduced to the greatest extent, oxygen vacancies are introduced, and electron and lithium ion transmission is enhanced. And the gold nanoparticles are anchored on Ti sites on the surface of MXene to form conductive interface bonds, so that the interface conductivity and the mechanical integrity are improved. The 3D printing nano-composite cathode is manufactured through an ink direct-writing 3D printing technology forming method, and the structure and spatial distribution of the active material can be accurately controlled, so that the ion / electron path is shortened, and the electrochemical kinetics is improved.

The invention provides a rapid charging and discharging method and system based on a sodium ion energy storage system, and relates to the technical field of energy storage, and the method comprises the steps: determining the instantaneous heat loss of an energy storage module in a scheduling switching process according to the transient change characteristic and current abrupt change component of the electrode heat behavior of the energy storage module in the scheduling switching process; the instantaneous output power of the energy storage modules in the scheduling switching process is extracted, the distribution state of the thermal load between the energy storage modules is analyzed according to the instantaneous output power and the internal resistance change rate in the scheduling switching process, and then the thermal load balance index of the sodium ion energy storage system in the charging and discharging process is determined; and constructing a thermal cost regulation and control model suitable for the rapid charging and discharging process based on the instantaneous thermal loss and the thermal load balancing index, and adjusting thermal compensation power during scheduling switching in the rapid charging and discharging process through the thermal cost regulation and control model. According to the invention, the dynamic adjustment of the thermal compensation power during the scheduling switching of the energy storage module can be realized, so that the stability of the sodium ion energy storage system in the rapid charging and discharging process is improved.

The invention relates to a Ramsy calibration method, system and device capable of determining a correction direction and a medium, and belongs to the technical field of quantum, the Ramsy calibration method capable of determining the correction direction comprises the following steps: estimating a Rabian detuning amount between a scanning microwave or laser frequency and an energy level difference; setting a frequency offset on the basis of the Ratio detuning amount, and changing the Ratio detuning amount to a positive value; and performing Ramsy calibration based on the positive-value Rabian detuning amount to obtain a determined energy level difference. According to the method, the detuning amount is manually set to ensure that the detuning amount is positive, so that the detuning obtained by the Ramsey interference method can be directly used for calculating the energy level difference without verifying whether the correction direction is correct or not, the subsequent experiment for judging whether the detuning is positive or negative is reduced, and the speed of calibrating the energy level difference of atoms or ions is increased.

Embodiments provided herein generally include apparatus, plasma processing systems and methods for generation of a waveform for plasma processing of a substrate in a processing chamber. Embodiments of the disclosure include an apparatus and method for generating a pseudo-staircase waveform that includes coupling, during a first phase of generating a waveform, a first voltage supply to an output node; coupling, during a second phase of generating the waveform, a first capacitor between the output node and an electrical ground node; and coupling during a third phase of generating the waveform, the first capacitor and a second capacitor in a series path between the output node and the electrical ground node.