919 results about "Supercapacitor" patented technology

The invention provides a coordination control method and device of a photovoltaic energy storage inverter for automobile charging based on artificial intelligence, and belongs to the technical field of automobile photovoltaic energy storage coordination control, and the method comprises the steps: monitoring the output power of a photovoltaic array, the state of charge (SOC) of an energy storage system, the state of a power grid and the power demand of a load in real time; a reinforcement learning algorithm is introduced, weather forecast and historical load data are combined, photovoltaic output and load demands in a future time period are predicted, and a power distribution instruction is generated; deciding a current operation mode and generating a mode switching instruction; seamless switching between grid connection and grid disconnection is controlled, and after switching is completed, the charging and discharging proportion of the lithium battery and the super capacitor is coordinated; integrating the energy storage real-time state and the power distribution instruction, and optimizing and adjusting the control parameters of the inverter in real time; continuously monitoring a running state and a switching process, and starting a standby mode when a fault is detected; and the data is uploaded to a monitoring platform. The system operation is efficiently optimized, the service life is prolonged, and stability is guaranteed.

The invention relates to the technical field of polymer photoelectric materials, in particular to a preparation method of a supramolecular gel electrolyte. The method comprises the following steps: esterifying tetraphenylethylene alcohol and methacryloyl chloride to form tetraphenylethylene methacrylate, and performing staged linear heating polymerization on the tetraphenylethylene methacrylate, 3-(methacrylamido) propyl dimethyl 3-thiopropyl ammonium oxide inner salt, acrylic acid, tetraphenylethylene methacrylate and 4-vinylpyridine under the action of ammonium persulfate to obtain a tetraphenylethylene copolymer. And finally, soaking in a lithium chloride aqueous solution to obtain the supramolecular hydrogel electrolyte. The hydrogel obtained by the invention has high mechanical strength and high ionic conductivity, and is suitable for energy storage devices such as flexible supercapacitors and the like.

The invention discloses a robot battery system and method, and the system comprises a main battery which is disposed at the center of a robot and is used for providing a stable low-power power supply for the robot; the at least one distributed battery is electrically connected with the main battery, is arranged at a load part of the robot and is used for providing an intermittent medium-power power supply for the corresponding load part; the at least one super capacitor is electrically connected with the main battery, is arranged at the action part of the robot and is used for providing an instant high-power power supply for the corresponding action part; the control module is in signal connection with the main battery, the at least one distributed battery and the at least one supercapacitor and is used for correspondingly adjusting a power output distribution strategy of a corresponding part of the robot according to the real-time power consumption data and the power consumption demand data of the main battery, the at least one distributed battery and the at least one supercapacitor; the power transmission loss can be reduced, and the overall operation stability is improved.

The invention discloses a novel induction-type magneto-thermo-acoustic detection method for the conductivity of a supercapacitor, and relates to the technical field of nondestructive material detection.The method comprises the steps that a steady-state static magnetic field and a pulse alternating magnetic field are introduced to form a composite excitation field, and a magneto-acoustic effect and a thermo-acoustic effect are simultaneously and cooperatively excited in a solid-state electrode material; the magnetoacoustic-thermoacoustic coupling effect is formed, eddy current induced by a pulse alternating magnetic field in the material not only generates joule heat, but also generates a direct carrier of Lorentz force under the action of a steady-state static magnetic field, the two physical effects are derived from the same electromagnetic excitation process, but the mechanisms for generating acoustic signals are complementary to each other, so that the effect of the magnetoacoustic-thermoacoustic coupling is achieved. The two effects are coupled as a unified sound source item, a sound pressure wave equation is established, the equation describes a sound field excitation process under the combined action of a force source and a heat source, the coupling mechanism remarkably enhances the strength and information abundance of ultrasonic signals, and the inherent defect that a single thermoacoustic detection method is insensitive to a high-conductivity material is overcome.

The invention discloses a multi-network anti-freezing hydrogel electrolyte, a preparation method thereof and application of the multi-network anti-freezing hydrogel electrolyte in an electrochemical device. The hydrogel is prepared by using polyvinyl alcohol (PVA) and polyacrylamide (PAM) to form a basic network skeleton, introducing phytic acid, ethylene glycol and lithium / zinc bimetal salt (Li2SO4 / ZnSO4), and carrying out thermal initiation polymerization and freeze thawing. The hydrogel prepared by the invention has a multiple physical cross-linked network formed by polymer molecular chain entanglement, hydrogen-bond interaction among functional groups and metal coordinate bonds constructed between phosphate groups and divalent metal ions, so that the hydrogel electrolyte has excellent mechanical properties. Due to introduction of ethylene glycol, formation of ice crystals is effectively inhibited, and the hydrogel is endowed with excellent anti-freezing performance; the high-concentration Li < + > and Zn < 2 + > ensure the high ionic conductivity. The supercapacitor assembled by using the hydrogel electrolyte shows relatively high specific capacitance and good capacitance retention rate under bending and freezing conditions, and has good electrochemical properties and safety performance.

Disclosed herein are systems and methods for energy management. A system, such as a vehicle, includes a plurality of energy storage units that include a supercapacitor and an electrochemical battery. The system includes plurality of energy storage units including a supercapacitor and an electrochemical battery, the supercapacitor comprising a plurality of selectable power sources, and an adder module including a processor. The processor is configured to execute instructions to selectively connect the supercapacitor or the electrochemical battery to an electric drivetrain to propel the vehicle. The processor may be configured to measure the selectable power sources and determine a set of the selectable power sources to connect to the system.

The invention relates to the technical field of electronic circuits, in particular to a polar field magnet coil power supply system and a power supply method. The polar field magnet coil power supply system comprises a super capacitor, a control module and a driving module. The control module is coupled with the driving module and the polar field magnet coil, and the control module is configured to obtain feedback current of the polar field magnet coil, generate a first pulse width modulation signal group and generate a second pulse width modulation signal group. And the driving module is configured to respond to the first pulse width modulation signal group and generate the second pulse width modulation signal group, transmit energy stored by the super capacitor to the polar field magnet coil in the current rising sub-stage and the current maintaining sub-stage, and feed back the energy of the polar field magnet coil to the super capacitor in the current feedback sub-stage. According to the polar field magnet coil power supply system, the energy utilization rate can be greatly improved, the problem that energy cannot be recycled in the prior art is solved, and the problem that the failure rate is high is solved.

The invention provides a method and device for determining the health state of a supercapacitor, and relates to the technical field of supercapacitors, and the method comprises the steps: obtaining the voltage variation and the current variation of the supercapacitor in the operation process; determining a target equivalent resistance value according to the voltage variation and the current variation; determining a target equivalent capacitance value according to the voltage variation and the current value in the corresponding time period; determining a resistance growth rate and a capacitance attenuation rate according to the target equivalent resistance value and the target equivalent capacitance value; and determining the health state of the supercapacitor according to the resistance growth rate and the capacitance attenuation rate. Therefore, the capacitance attenuation rate and the ESR growth rate can be extracted online based on the voltage data and the current data acquired in real time without interrupting the system or adding the test current in the equipment operation process, the process is simplified, and the accuracy and the reliability of determining the health state of the supercapacitor are also improved through the real-time data.

The invention relates to the field of buried facility monitoring, and discloses a piezoelectric cantilever vibration sensing and super capacitor self-powered energy closed-loop operation method and system, and the method comprises the steps: building a star array composed of a master pile and a slave pile, and configuring a TDMA time slot and an uplink message length; the slave pile collects a vibration signal through a piezoelectric cantilever, the vibration signal is rectified by a piezoelectric rectification energy taking module and then charges a super capacitor, and the voltage state of the two ends of the super capacitor is obtained; when the voltage state reaches a preset upper threshold, the boosting module supplies power to the processing circuit and the transmitting circuit of the slave pile, and the processing circuit generates a four-byte feature code; the slave piles send four-byte feature codes in a magnetic induction link according to TDMA time slots, the master pile receives and aggregates the four-byte feature codes sent by the multiple slave piles, completes positioning and fusion according to the arrival time difference, and returns the four-byte feature codes to the platform through LoRa and 4G, and the platform completes storage and output according to the four-byte feature codes and a positioning result. According to the invention, end-side cloud connection and replicable deployment can be realized, and low-frequency vibration acquisition and buried communication are adapted.

The invention relates to the technical field of supercapacitor manufacturing, in particular to an automatic pasting method and system for supercapacitor pole pieces, and the method comprises the steps: controlling a mechanical arm provided with an end effector; the mechanical arm drives the end effector to move to the position above the super capacitor pole piece to be picked up; in the picking process, the matrix type flexible film pressure sensor array is used for monitoring the pressure distribution uniformity in real time when the end effector adsorbs the supercapacitor pole piece; a mechanical arm is controlled to carry the super capacitor pole piece to the position above the target chip mounting position; in the contact process of the supercapacitor pole piece and the patch base material, the six-dimensional force sensor is used for sensing the contact force in real time, and active force control servo is conducted on the mechanical arm based on a preset micro-pressure threshold value, so that flexible placement is achieved. Impact, indentation and wrinkles caused by equipment positioning errors, base material height tolerance or high-speed motion inertia are effectively avoided, and the pole piece is smoothly placed.

The invention discloses a fluidized bed reactor for preparing porous carbon through collaborative graded activation of water vapor and CO2 and a method for preparing the porous carbon through collaborative graded activation of the water vapor and the CO2, and belongs to the technical field of material chemical engineering. The fluidized bed reactor is composed of a shell, a fluidization section, a sedimentation section, a porous distribution plate, a gas distribution chamber, a stirring device and a temperature control system, and uniform fluidization and multi-section temperature control of superfine powder are achieved. According to the activation method, steam and CO2 collaborative graded etching pore-forming is adopted, specifically, in the first stage, quick pore-forming is conducted mainly through steam at the temperature of 500-800 DEG C, in the second stage, pore-expanding is conducted cooperatively through steam and CO at the temperature of 700-900 DEG C, and in the third stage, fine control is conducted mainly through CO2 at the temperature of 850-1050 DEG C; the continuous preparation of the high-performance porous carbon with the specific surface area of 1500-2500m < 2 > / g, the pore volume of more than or equal to 0.8 cm < 3 > / g and the 2-10nm mesopores accounting for 20-60% is realized by adjusting the gas velocity, the activation temperature, the activation time and the ratio of water vapor to CO2, the bottlenecks of low specific surface area, single pore diameter, large batch difference and the like of physical activation are solved, and the method is suitable for green and low-cost production of high-end energy storage carbon materials such as supercapacitors, lithium / sodium ion batteries and the like.

An emergency backup power source for an electrically controlled and motorized window shade unit includes an input power switch, and charge and discharge control circuit, and a supercapacitor bank. During normal operation a nominal voltage level from a main power source of the aircraft is provided directly to the window shade unit through the input power switch, and the supercapacitor bank is charged. The input voltage is monitored by the emergency backup power source, which controls the input power switch. When the input voltage drops below a threshold level, the input power switch is opened and the charge and discharge circuit operates to provide an emergency output voltage to the window shade unit from the supercapacitor bank so that the window shade can be fully opened or closed, as is required.

Techniques and apparatus for swapping a primary power source (e.g., a main battery) while using a secondary power source (e.g., a backup battery or a supercapacitor) to power a portable device. One example integrated circuit (IC) for power management generally includes a first power supply node; a second power supply node; a first port for coupling to a primary power source; a first switch coupled between the first power supply node and the first port; a second port for coupling to a secondary power source; a second switch coupled between the first power supply node and the second port; and a third switch coupled between the first and second power supply nodes. For certain aspects, the IC also includes a third power supply node, a voltage regulator coupled between the first and third power supply nodes, and a fourth switch coupled between the second and third power supply nodes.

The invention provides a power supply and distribution control method for an offshore wind-solar complementary direct supply type seabed data center, and the method comprises the steps: collecting wind power and photovoltaic electric energy to an ashore substation through a same AC power transmission channel, converting the wind power and photovoltaic electric energy into a first AC voltage, and generating a DC bus voltage; the direct-current bus directly supplies information processing load, and the first alternating-current voltage drives the cooling system; configuring a multi-time-scale energy storage system comprising a super capacitor, a flow battery and a standby power supply, and stabilizing second-level, minute-to-hour-level and longer-period power fluctuations respectively; based on wind and light output prediction and the energy storage charge state, load and charge and discharge are dispatched cooperatively. According to the method, the power transmission cost and conversion loss are reduced, the green power consumption rate and the power supply quality are improved, the dependence on outsourcing power is reduced, and efficient, stable and low-carbon operation is realized.

The invention discloses a supercapacitor with a honeycomb structure and a preparation method thereof, the supercapacitor comprises a positive current collector, a negative current collector and a honeycomb energy storage layer, and the positive current collector and the negative current collector respectively cover two opposite surfaces of the honeycomb energy storage layer; the honeycomb energy storage layer is formed by folding, stacking and fixing a plurality of composite films, each composite film comprises a first electrode layer, an electrolyte layer and a second electrode layer, and the first electrode layer, the electrolyte layer and the second electrode layer are sequentially stacked and are respectively compounded and fixed through a bonding layer. The preparation method comprises the following steps: firstly, sequentially compounding and fixing the first electrode layer, the electrolyte layer and the second electrode layer to form a composite membrane with a sandwich structure, coating an adhesive on the single side surface of each composite membrane at intervals, and then stacking and stretching a plurality of composite membranes to form a honeycomb core structure; after folding, a positive current collector and a negative current collector are compounded on the two sides of the honeycomb core structure. An energy storage structure and a force bearing structure are organically combined, and the energy storage performance and the mechanical performance are synergistically improved.

The invention discloses coal pitch-based super capacitor carbon and a preparation method and application thereof, and the preparation method of the super capacitor carbon comprises the steps: dissolving coal liquefaction refined pitch in an organic solvent, and adding ZnCl2, KCl and potassium citrate to obtain a pitch solution containing an ionic hot molten salt activator; the preparation method comprises the following steps: soaking a biomass template in a dopamine aqueous solution, and then mixing with an asphalt solution to obtain a biomass template-asphalt compound; and oxidizing, carbonizing, activating, washing and drying the compound to obtain the capacitor carbon. And mixing and heating the capacitor carbon, a nitrogen source and a phosphorus source, and carrying out graphitization doping. The pitch-based super capacitor carbon with high specific surface area, excellent electrochemical performance and environmental protection advantages is prepared through a biomass template method, and the preparation process has great potential in the field of energy storage.

The invention discloses a super capacitor monomer health state estimation method based on charging and discharging data, which belongs to the technical field of measurement, and comprises the following steps: carrying out de-noising processing on circulating charging and discharging data of a tested super capacitor monomer, calculating instantaneous frequency and instantaneous energy of the charging and discharging data after de-noising; energy feature distribution of time domain and frequency domain decoupling of the de-noised charging and discharging data is obtained, an energy feature distribution decomposition result is synchronously input into the health state estimation model based on the convolutional neural network, and the real-time capacity and the maximum capacity of the measured super capacitor monomer are fed back to the health state estimation model. And obtaining a predicted value of the capacity of the tested super capacitor monomer after training, and estimating the health degree of the super capacitor monomer. According to the method, collaborative analysis is carried out by fusing the time-domain dynamic characteristics and the frequency-domain steady-state characteristics of the charging and discharging data of the supercapacitor monomer, the limitation of traditional single-dimensional data representation can be broken through, and the detection sensitivity of the degradation phenomenon of the lithium ion supercapacitor is improved.

Disclosed are novel electrolytes, and techniques for making and devices using such electrolytes, which are based on compressed gas solvents. Unlike conventional electrolytes, disclosed electrolytes are based on “compressed gas solvents” mixed with various salts, referred to as “compressed gas electrolytes.” Various embodiments of a compressed gas solvent include a material that is in a gas phase and has a vapor pressure above an atmospheric pressure at room temperature. The disclosed compressed gas electrolytes can have wide electrochemical potential windows, high conductivity, low temperature capability and / or high pressure solvent properties. Examples of a class of compressed gases that can be used as solvent for electrolytes include hydrofluorocarbons, in particular fluoromethane, difluoromethane, tetrafluoroethane, and pentafluoroethane. Also disclosed are battery and supercapacitor structures that use compressed gas solvent-based electrolytes and techniques for constructing such energy storage devices. Techniques for electroplating difficult-to-deposit materials using compressed gas electrolytes as an electroplating bath are also disclosed.

The present invention relates to the synthesis of pure metal or multi-metal derivatives of ZIF-11, ZIF-12 or amorphous ZIF structures in high yield followed by calcination under inert conditions to produce in composite nanostructures one or more metal selenide dispersed on the surface of or embedded in a carbon matrix, and using these composites as electrodes for lithium ion batteries, sodium ion batteries, potassium ion batteries, supercapacitors or fuel cells.

The invention discloses a remote area-oriented solar unmanned aerial vehicle autonomous line patrol method, and aims to solve the problems of unreliable energy, dependence of navigation on external signals and lack of on-site repair capability in the existing patrol technology. Comprising the following steps: S1, constructing a photovoltaic-super capacitor battery-free energy closed loop to realize day-and-night energy supply and dormancy restart; s2, through sun-air pressure-magnetic field fusion navigation, transverse positioning is obtained, and line tracking stability is guaranteed; s3, circuit hot spots are identified through infrared, conductive adhesive is triggered to be accurately sprayed and repaired, and the hovering process is embedded to reduce energy consumption; and S4, kite type single-wing landing recovery is adopted, and dormancy and waiting for starting are performed after zero-power landing. External power supply and manual intervention are not needed in the whole process, and all-weather and long-period automatic intelligent operation and maintenance of the high-voltage transmission line are achieved.

The invention discloses an all-welded double-explosion-proof supercapacitor and a manufacturing method thereof. The supercapacitor comprises a positive electrode outer cover assembly, a negative electrode composite terminal, a battery cell and a shell. The manufacturing method comprises the following steps: separately assembling the positive electrode outer cover assembly, the negative electrode composite terminal, the battery cell and the shell; and carrying out vacuum drying, liquid injection, standing infiltration, formation, aging and capacity grading operation to obtain the all-welded double-explosion-proof supercapacitor. The single-side tab structure design is adopted, isolation of the positive electrode and the negative electrode is achieved at the same end, and the grouping space utilization rate is increased; by means of split stamping manufacturing and welding composite connection, full-automatic operation in the assembling process is achieved, the product uniformity is effectively improved, the production efficiency is improved, and the manufacturing cost is reduced; the internal resistance of the battery core is reduced, large-current charging and discharging are realized, and the power performance is improved; the insulation sealing effect, the high temperature resistance and the service life are effectively improved, and the problem of liquid leakage in the use process of the capacitor is solved; and the circuit and the cell management system are effectively protected while the safety of the cells is ensured.

The present invention is a system and method for recovering the kinetic energy created by movement of a vehicle frame relative to a vehicle suspension to generate electrical energy that may be utilized on-the-fly or stored in order to provide power to an electric vehicle, wherein an embodiment for a regenerative energy system uses a hydraulic system coupled to the shock absorbers of a vehicle or trailer, wherein the captured kinetic energy is transferred to a plurality of gear assemblies to convert movement of the vehicle or trailer to rotary motion that is then amplified in rotational speed by a gear reduction system to cause rotational movement of a shaft of one or more generators in a single rotational direction to thereby generate electricity that may be utilized directly by electrical motors or stored in batteries or supercapacitors.

The invention belongs to the technical field of super capacitors, and particularly relates to a super capacitor electrode material and a preparation method thereof. Zinc selenide is tightly compounded on an MXene material to obtain the nano composite material, and the zinc selenide is obtained through in-situ conversion of a ZIF-7 precursor. The material realizes a point-line-surface three-dimensional conductive network in which ZnSe nanoparticles, in-situ derived carbon and MXene nanosheets are tightly coupled, has a high-defect carbon structure and an excellent electron conduction path, realizes ultrahigh specific capacitance, excellent rate capability and excellent long cycle stability, and greatly improves comprehensive electrochemical performance.

A mechanical hand clamping jaw, comprising: a support unit, comprising a support assembly for support and a guide rail for guidance; a driving unit arranged on the support assembly, comprising two sets of cylinder assemblies and a limiting block assembly, the power output ends of the two sets of cylinder assemblies are respectively connected with clamping units, and the movement directions of the power output ends are consistent with the axial direction of the support assembly, the power output ends of the two sets of cylinder assemblies move in opposite directions or in the same direction; the limiting block assembly is arranged on the movement track of the power output ends of the cylinder assemblies; and the clamping unit comprises a first clamping piece connecting assembly and a second clamping piece connecting assembly, the first clamping piece connecting assembly and the second clamping piece connecting assembly are respectively connected with the power output ends of the corresponding cylinder assemblies. The beneficial effects of the present application are: simple and stable structure, light weight, long service life, low failure rate and other advantages; not only widely used in the automatic production equipment of energy storage devices such as lithium batteries, lithium capacitors and super capacitors.

The invention belongs to the technical field of preparation of new energy materials and supercapacitors, and particularly relates to a Mo-Fe co-doped MnO2 / Ag-CNTs composite electrode and a preparation method and application thereof. The method comprises the following steps: firstly, preparing an activated carbon cloth substrate, a deposition solution A and a deposition solution B; then the deposition solution A and the deposition solution B are mixed to obtain a Mo-Fe-MnO2 deposition solution, and an Ag-CNTs deposition solution is prepared; and finally, electro-deposition is alternately carried out in the Mo-Fe-MnO2 deposition solution and the Ag-CNTs deposition solution, and the Ag-CNTs / Mo-Fe-MnO2 / Ag-CNTs composite material is obtained. The preparation process provided by the invention is simple and controllable, and the large-scale preparation of the high-performance composite electrode is easy. The electrode is unique in structure and excellent in performance, and a flexible solid-state PSCSC device assembled by the electrode has high energy storage density and efficient mechanical energy self-charging capacity and shows huge application potential in the field of self-powered wearable / implantable microelectronics.

The invention relates to the development of low-cost functionalised copper (II) hydroxide (f-Cu(OH)2) electrodes for energy storage technologies and electrochemical devices. By means of surface functionalisation using high-energy X-rays, the energy storage capacity of the material is increased and an environmentally friendly production process is provided. The electrodes produced by this method can be used in applications such as supercapacitors, portable electronic devices, and renewable energy systems.

An aerosol provision device for providing aerosol during a puff on the aerosol provision device is disclosed. The aerosol provision device comprises at least one power supply comprising at least one supercapacitor configured to supply electrical power to at least one aerosol generator for generating aerosol from aerosol generating material. The at least one supercapacitor is a lithium-ion capacitor, LIC, comprising an anode and a cathode, wherein the anode and / or the cathode comprises one or more dopants.

The invention provides a composite supercapacitor material, a preparation method thereof and a supercapacitor, and the preparation method comprises the following steps: immersing a foam metal substrate in a sulfur-molybdenum source deposition solution, and carrying out the first electrodeposition to obtain a foam metal substrate loaded with amorphous molybdenum sulfide; and immersing the foam metal substrate loaded with amorphous molybdenum sulfide into a silver source deposition solution, and carrying out second electrodeposition to obtain the composite supercapacitor material which comprises the foam metal substrate loaded with amorphous molybdenum sulfide and silver. According to the preparation method, the silver-amorphous molybdenum sulfide-foam metal composite electrode material is prepared through two-step electrochemical deposition, the preparation process is simplified, high temperature and high pressure are not needed, large-scale production can be achieved, and a high-performance water-based and solid-state symmetric supercapacitor constructed based on the material has a good application prospect. And collaborative improvement of energy density and power density and practicability of a solid-state device can be realized.

An assembly includes one or more photovoltaic solar trackers; a rechargeable power supply system, including power supply elements to power the tracker or trackers; a charging system, to recharge the power elements; and a tracker controller. The assembly stands out for including one or more supercapacitors as power supply elements. The invention makes it possible to arrange the power supply elements at low temperatures without the need for heaters, increase their useful life and reduce their size.

The invention discloses a nickel-cobalt layered double hydroxide for a supercapacitor and a preparation method and application thereof, and belongs to the technical field of energy storage. The preparation method of the nickel-cobalt layered double hydroxide for the supercapacitor comprises the following steps: performing hydrothermal reaction on nickel salt, cobalt salt, ammonium citrate and urea to obtain the nickel-cobalt layered double hydroxide, the temperature of the hydrothermal reaction is 120-150 DEG C, and the time of the hydrothermal reaction is 6-12 hours. According to the invention, ammonium citrate is added to regulate the precipitation rate of the precursor, so that the morphology of the nickel-cobalt layered double hydroxide can be regulated and controlled, and the situation that the nickel-cobalt layered double hydroxide is rapidly combined with hydroxyl ions to cause too fast crystallization and coarse crystal grains is avoided; and meanwhile, the concentration uniformity of metal ions in the solution is regulated and controlled, so that the crystallinity of the nickel-cobalt layered double hydroxide is uniform, and lattice defects are reduced. Therefore, when the material is used as an electrode material of a supercapacitor, the material has relatively high specific discharge capacity.