30results about How to "Increase energy output" patented technology

The utility model relates to the technical field of photovoltaic agricultural greenhouses, and discloses an energy-saving and environment-friendly photovoltaic agricultural greenhouse. According to the device, a rotating disc is fixedly connected to the lower end of a fixing frame, a rotating column is rotationally connected to the end, opposite to the fixing frame, of the rotating disc, a base is rotationally connected to the end, opposite to the rotating disc, of the rotating column, and a plurality of screws are in threaded connection with through holes formed in the upper surface of the rotating disc; and the screw rod penetrates through the turntable and is in threaded connection with a through hole formed in the upper surface of the base. Wherein the rotating column can drive the solar panel to rotate, and after rotation, a screw rod can penetrate through the rotating disc and a threaded hole in the upper surface of the base to fix the solar panel. The rotatable base can automatically adjust the angle of the solar panel according to the position of the sun and the illumination intensity so as to absorb solar energy to the maximum extent. Therefore, the energy output and efficiency of the photovoltaic system can be improved, and more clean solar power can be provided for the greenhouse.

The invention provides a multi-band multi-light-source hybrid lighting system. The multi-band multi-light-source hybrid lighting system comprises a light source group, a light beam synthesis module and a control system, wherein the light source group comprises a plurality of light sources with different wavelengths; the light beam combining module comprises a light beam shaping mechanism, a light beam combining mechanism and a power balancing mechanism; and the control system is used for adjusting the output power, exposure time and light beam shape parameters of the light source. According to the invention, ultraviolet laser beams with different wavelengths are synthesized, so that wider spectrum coverage and higher energy output are realized; accurate control and real-time monitoring of the combined light beam are realized through the control system, so that the stability and the reliability of the system are improved, and the operation difficulty and the maintenance cost are reduced.

The invention discloses a preparation method of a lithium manganese iron phosphate battery positive electrode material, and belongs to the technical field of battery positive electrode material preparation. The preparation method of the lithium manganese iron phosphate battery positive electrode material comprises the following steps: (1) adding a lithium source, a manganese source, an iron source, a phosphate radical source and polyacrylonitrile into a container, then adding N, N-dimethylformamide as a solvent, stirring under a water bath heating condition to obtain a spinning solution, stirring and mixing the spinning solution with a composite organic matter, and then, carrying out ultrasonic treatment to obtain a precursor solution; carrying out ultrasonic treatment, and then carrying out electrostatic spinning to obtain a positive electrode material precursor; (2) after aging the positive electrode material precursor, transferring the positive electrode material precursor into a tubular furnace for heat treatment to obtain a carbonized positive electrode material; and (3) carrying out ball-milling mixing on the composite carbon nanotube and the carbonized positive electrode material, and pressing to obtain the lithium manganese iron phosphate battery positive electrode material. The positive electrode material prepared by the method has excellent cycle performance, structural stability and rate capability.

The invention discloses a wind wave and flow comprehensive power generation device based on a novel semi-submersible floating platform. The wind wave and flow comprehensive power generation device comprises a wind power generation device, the semi-submersible floating platform, a wave energy absorbing device, a tidal current energy power generation device and a catenary type mooring device. The wind power generation device is arranged above the semi-submersible floating platform, the tidal current energy power generation device is arranged below the semi-submersible floating platform, and the wave energy absorption device is arranged on a truss supporting structure of the semi-submersible floating platform; the upper end of the catenary mooring is fixed to a buoy of the semi-submersible floating platform, and the lower end of the catenary mooring is fixed to a seabed through an anchor structure. According to the integrated power generation device, integrated power generation is achieved through combination of wind energy, wave energy and tidal current energy, wave energy power generation and tidal current energy power generation are increased on the basis of offshore wind power generation while the ocean utilization area is not increased, the energy output of a unit sea area can be increased, and economic benefits are improved.

The invention discloses a hybrid power system based on an ammonia-hydrogen engine and a hydrogen fuel cell and application, the hybrid power system comprises an ammonia fuel supply mechanism, a hydrogen fuel cell power mechanism, an ammonia-hydrogen engine power mechanism and a tail gas recovery processing mechanism, the gasifier is respectively communicated with the hydrogen fuel cell power mechanism, the ammonia hydrogen engine power mechanism and the tail gas recovery processing mechanism; the hydrogen fuel cell power mechanism comprises an ammonia decomposer, an ammonia separator, a hydrogen fuel cell and a transmission device which are sequentially connected in series, and the hydrogen fuel cell is electrically communicated with the transmission device; the ammonia separator and the hydrogen fuel cell are both communicated with the ammonia-hydrogen engine power mechanism; the ammonia-hydrogen engine power mechanism is respectively communicated with the tail gas recovery processing mechanism and is connected with the transmission device. According to the hybrid power system based on the ammonia-hydrogen engine and the hydrogen fuel cell and application, efficient energy output is achieved, and efficient utilization of fuel is achieved.

The utility model provides a three-wavelength high-energy laser. A light source, a green stone crystal rod and a YAG crystal rod are arranged in the light gathering cavity, and the green stone crystal rod and the Nd: YAG crystal rod are arranged on the two sides of the light source; the focus lens is arranged on a light path on one side of light emitted by the green stone crystal rod; the bonding crystal can be selectively arranged on an emergent light path of the focus lens according to the emergent light requirement; the first beam splitter is matched with the second reflector to reflect light to the Nd: YAG crystal rod; an optical shutter between the first beam splitter and the second reflector is selected to be opened or closed according to the light emitting requirement; and selecting whether to arrange the frequency doubling crystal on the light emitting side of the Nd: YAG crystal rod according to the light emitting requirement.

The utility model discloses a new energy photovoltaic panel operation maintenance device, and relates to the technical field of photovoltaic panels. The photovoltaic panel cleaning device comprises a triangular supporting frame, a photovoltaic panel is arranged on the inclined face of the triangular supporting frame, a cleaning device is arranged on the side face of the triangular supporting frame, the cleaning device comprises a fixing plate, the side face of the fixing plate is fixedly connected to the side face of the triangular supporting frame, and a driving box is fixedly connected to the top of the fixing plate. The side face of the driving box is fixedly connected with a water tank. According to the photovoltaic panel cleaning device, the pressing force of a worker is matched with the components such as the water tank, the water outlet block and the spray head in the cleaning device, so that water in the water tank flows into the water pipe, then flows into the water outlet block from the water pipe, flows into the spray head from the water outlet block, and finally is sprayed out from the spray head to clean the photovoltaic panel; the effects of removing dust, dirt and other impurities accumulated on the surface of the photovoltaic panel and improving energy output are achieved.

The invention discloses an array type laser ignition system and method for a safety air bag gas generator. The system comprises a collision sensor, a central control system, an array type laser emission assembly, an external pipe shell and a safety air bag. The array type laser emitting assembly comprises a positive electrode shell, a negative electrode shell, a laser semiconductor light-emitting chip array plate, a gold wire, a lens sleeve shell, a collimating lens and a focusing lens. Laser semiconductor light-emitting chips are distributed on the laser semiconductor light-emitting chip array plate in an array manner; the ignition method comprises the steps that when an automobile is collided, the collision sensor detects collision force, a signal of the collision force is transmitted to the central control unit, the central control unit judges the collision state according to the amplitude and time of the signal and preset parameters, and the central control unit sends an ignition signal mode of the array according to the collision state. The ignition output form and the output energy are controllable, and the situation that the safety air bag stops working due to the fact that a single ignition element breaks down is avoided.

The application discloses a high-rate valve-regulated lead-acid battery and a preparation method thereof. The battery comprises a battery shell, a positive plate, a negative plate and an electrolyte arranged in the battery shell. The positive plate and the negative plate are both honeycomb lattice structure plates, and the positive plate is coated with a positive active material, and the negative plate is coated with a negative active material. The components of the positive active material include lead powder, graphite, sulfuric acid, nano lead dioxide and pure water. The components of the negative active material include lead powder, barium sulfate, sodium lignosulfonate, graphene composite additive and carbon black. The discharge rate of the high-rate valve-regulated lead-acid battery can reach 3-5C, and the discharge capacity retention rate is above 95% under the 1C discharge rate, which can meet the demand of 5G base stations, data centers and other fields for instantaneous large current and high power output.

The invention relates to the field of energetic materials, in particular to a preparation method and application of core-shell structure nano-copper coated micron aluminum. Copper ions are reduced into nano-copper by utilizing the reducibility of aluminum, and the nano-copper is uniformly deposited and coated on the surface of micron aluminum powder, so that composite particles with core-shell structures are prepared. A reducing agent, a complexing agent, a protective agent and a surfactant do not need to be added in the whole process, introduction of non-propellant components is avoided, efficient and low-cost preparation is achieved, and aftertreatment operation is simpler. According to the prepared composite particles, the content of active aluminum is increased, the combustion performance and the oxidation heat release amount of aluminum are enhanced, the oxidation resistance and the catalytic capacity of the composite particles are improved, and the composite particles have good compatibility with other components of the propellant.

This application discloses an electric drive system and a vehicle, relating to the technical field of vehicles. The electric drive system includes: a motor, comprising a stator, an inner rotor, and an outer rotor; an outer rotor output shaft, comprising a first shaft segment and a second shaft segment, the first shaft segment being fixedly connected to the outer rotor; an inner rotor output shaft, fixedly connected to the inner rotor; a primary reduction mechanism, comprising a primary first drive gear and a primary second drive gear, the primary first drive gear being loosely fitted onto the inner rotor output shaft, and the primary second drive gear being fixedly connected to the second shaft segment; a first switching device, installed on the inner rotor output shaft and the primary first drive gear; under the action of the first switching device, the inner rotor output shaft and the primary first drive gear are dynamically coupled or decoupled; a second switching device, installed on the first shaft segment and the second shaft segment, under the action of the second switching device, the first shaft segment and the second shaft segment are dynamically coupled or decoupled.

The present invention provides an enhanced multi-mode multi-effect absorption energy storage and release device and an operation method thereof. The device comprises: a first solution tank, a second solution tank, a refrigerant tank, a first compressor, and a second compressor. The present invention utilizes two solution tanks, two compressors, and a refrigerant tank and the connecting pipelines involved to realize an enhanced multi-mode multi-effect absorption energy storage and release cycle, which is particularly suitable for medium-temperature heat sources of 120 to 200°C, and can effectively realize the recovery of condensation heat as a concentrated heat source, realize multi-effect operation, and greatly improve the energy storage efficiency; and the present invention, with the assistance of the compressor, reduces the demand for energy storage temperature, is compatible with the use of low-temperature heat sources, and has a higher energy storage density than ordinary absorption energy storage systems. During the energy release process, by connecting the two solution tanks, it is possible to share the cooling water heat exchanger, ensure a longer energy release supply time, and achieve a stable energy release effect.

The present application belongs to the technical field of nuclear power plant steam generator cleaning, and particularly relates to a bubbling generating device for steam generator secondary side bubbling cleaning and a triggering method thereof. The device comprises a device body, an electromagnetic valve, an air inlet connector, a flange and a nozzle. The device body is a balanced double air chamber structure arranged in an axial direction. A main air chamber, a sealing seat, an intermediate chamber and a triggering air chamber are coaxially and serially arranged. The main air chamber and the triggering air chamber are communicated through a hollow valve rod arranged in a coaxial manner. The air inlet connector is installed on a cylinder of the triggering air chamber. The electromagnetic valve is installed on an outer side of the triggering air chamber. The flange is installed in the intermediate chamber of the device body through a hollow pipe. The nozzle is installed in the middle of the flange. The beneficial effect is that the influence of the response time of the electromagnetic valve is reduced through a pilot type air gun structure, high intensity and rapid triggering of the air gun is realized, the energy output of single bubbling is enhanced, and the utilization efficiency of the gas is improved.

The utility model discloses a battery pack, a battery device and an electric device, and relates to the technical field of batteries. The battery pack comprises a battery cell, a thermal expansion piece and a heating piece, the thermal expansion piece is arranged on at least one side of the battery cell, and the thermal expansion piece is used for generating expansion deformation during heating so as to extrude the battery cell; the heating part is used for heating the thermal expansion part. According to the battery pack disclosed by the invention, the controllable restraining force is applied to the battery cells, so that the energy output of the battery pack is favorably improved.

The invention relates to the technical field of zero-carbon parks, in particular to a comprehensive energy system for a zero-carbon park, which comprises an energy production module, a multi-energy conversion and storage module, an intelligent management and control module, a user load module and a carbon capture and utilization unit. Multi-energy complementation and long-time energy storage can be achieved, reliable supply of zero-carbon energy is guaranteed, the overall efficiency and the energy utilization rate of the system are improved, resource cyclic utilization, multi-time scale optimization and multi-element load interaction are achieved, optimal economic dispatching and hydrogen energy multi-element utilization are achieved, and multiple guarantees and operation toughness are provided; the data uplink gateway ensures that source data is real and cannot be tampered, meanwhile, short-term temperature fluctuation caused by renewable energy source fluctuation or load change of a heat supply network can be effectively restrained, continuous and stable heating / cooling service is provided for users, and the energy consumption quality and comfort of a park are remarkably improved.

The utility model discloses a liquid cooling induction type motor pump mechanism, which comprises a motor shell, a machine cover, a junction box, a water inlet, a water outlet, a circulating cooling structure, a motor pump head, a heat conduction cooling structure and a motor core, the motor core is connected inside the motor shell, the junction box is fixedly arranged at the top of the motor shell, the machine cover is fixedly arranged on one side of the motor core, and the water inlet and the water outlet are arranged on the machine cover. The motor pump head is fixedly installed on the other side of the motor core, the circulating cooling structure is arranged on the outer side of the motor shell in a communicating and erecting mode, one side of the circulating cooling structure is connected with the water inlet, and the other side of the circulating cooling structure is connected with the water outlet. A vacant cavity is formed between the motor shell and the motor core, and a heat conduction cooling structure is arranged in the vacant cavity. According to the utility model, the heat generated by the motor and the operation process thereof is effectively reduced, so that the working efficiency and the service life of the motor are improved, the operation energy consumption of equipment is greatly reduced, and the cost is saved.

The invention provides a three-terminal laminated solar cell based on a silicon nanowire structure, and relates to the technical field of solar cells. A first electrode layer is arranged in the perovskite top cell in the direction facing the incident light, a second electrode layer and a third electrode layer are arranged in the crystalline silicon bottom cell in the direction deviating from the incident light, and a plurality of nanowire structures are arranged on one side, facing the incident light, of an N-type silicon absorption layer at intervals. The nanowire structure can enhance coupling and propagation of long-wave photons to the N-type silicon absorption layer through a waveguide effect and a light field modulation effect, and the nanowire structure presents a sub-wavelength optical characteristic, so that an anti-reflection effect in a wide spectrum range is realized, and the absorption efficiency of the crystal silicon bottom cell on the long-wave photons is improved. In addition, by arranging a three-electrode structure, the overall energy output performance of the battery is improved.

The invention discloses a photovoltaic panel automatic cleaning method and system combined with weather and operation data analysis. The photovoltaic panel automatic cleaning method comprises the steps that first historical data and second historical data of a target photovoltaic panel are obtained; establishing a first efficiency model and a second rainfall influence model according to the first historical data and the second historical data; establishing a first judgment strategy based on the first efficiency model and the second rainfall influence model; and first real-time data and second real-time data of the target photovoltaic panel are obtained, and the target photovoltaic panel is automatically cleaned in combination with the first judgment strategy. By monitoring and analyzing the weather conditions and the operation data of the photovoltaic panel in real time, the opportunity and the mode of cleaning can be intelligently determined, so that the overall efficiency of the photovoltaic system is improved. Unnecessary cleaning operation can be reduced, maintenance cost is saved, meanwhile, it is ensured that the photovoltaic panel operates in the optimal state, and the service life of the photovoltaic panel is prolonged.

The present invention is a meta-device that realizes the multiplexing of low-frequency vibration suppression and triboelectric energy collection functions, including a base, a plane displacement device, an annular spacer, a supporting cylinder, a protective cover and a mass block, the inner side of the protective cover is connected to the central truncated cone part of the plane displacement device through the supporting cylinder, the supporting cylinder connects the plane displacement device and the protective cover, below the plane displacement device is an annular spacer with the same outer diameter as the plane displacement device, below the annular spacer is a base with the same diameter as the outer diameter of the annular spacer, and a friction nanogenerator is arranged between the base and the plane displacement device, and the friction nanogenerator includes an electronegative film and a flexible pad. The device of the present invention can realize both low-frequency vibration suppression and conversion of low-frequency vibration environmental energy into electrical energy, powering low-power electronic devices, and is compact and small in size. The small size also takes into account the protection of the device, thereby improving the reliability of the device.

The invention discloses a high-energy output single longitudinal mode oscillation system of a pulse laser for laser shock, which belongs to the technical field of pulse lasers and comprises a resonant cavity structure, an electro-optical driver, a PIN laser pulse waveform detector and a xenon lamp. The laser is characterized in that the resonant cavity structure comprises a total reflection mirror, an analyzer, an electro-optic Q-switched crystal, a polarizer, a crystal rod, a small-hole diaphragm and an output mirror which are arranged along an optical line, the distance between the output mirror and the total reflection mirror is equal to the length of the resonant cavity, the crystal rod is fixed in the metal light-gathering cavity, and the xenon lamp is driven by a rotation driving mechanism to rotate around the total reflection mirror. The xenon lamp rotates around the crystal rod in the metal light-gathering cavity, the xenon lamp pumps in the circumferential direction of the crystal rod in a side pump working mode, and the crystal rod generates polarized light. According to the high-energy output single longitudinal mode oscillation system, the xenon lamp rotates around the crystal rod, the xenon lamp works in a side pump mode, and the mode of pumping in the circumferential direction of the crystal rod is adopted, so that the energy utilization rate is improved, high-energy output of the single longitudinal mode oscillation system is ensured, the size of the whole laser can be reduced, and the size of the laser can be reduced. Optical components are greatly reduced, the quality stability of light beams is improved, and meanwhile, the manufacturing and subsequent debugging difficulty of the whole laser is greatly reduced.

The invention discloses an integrated metal hydrogen-oxygen fuel cell system constructed based on an aluminum-lithium alloy, and by optimizing the element composition and the surface appearance of a metal air cell negative electrode, the working voltage of the cell is kept stable, and meanwhile, the generation efficiency and the stability of hydrogen are remarkably improved. The 2195 aluminum-lithium alloy negative electrode is selected, the electrochemical activity is enhanced, more reaction sites are exposed through the optimized morphology, it is ensured that hydrogen is continuously generated in the side reaction, and sufficient and stable fuel is provided for the hydrogen-oxygen fuel cell. According to the system, the metal-air cell and the hydrogen-oxygen fuel cell are coupled, so that efficient cyclic utilization of hydrogen is realized, the problem of hydrogen waste in a traditional cell is avoided, and the energy efficiency and the cell performance of the whole system are further improved.

The invention discloses a preparation method of a double-layer positive electrode cylindrical battery, which comprises the following steps: step 1, selecting two positive electrode active materials with different particle sizes, respectively preparing large-particle slurry and small-particle slurry, coating at least one side surface of a current collector with the large-particle slurry, and drying to obtain a lower electrode layer, coating small-particle slurry on one side, far away from the current collector, of the lower motor layer, drying to obtain an upper electrode layer, and rolling to obtain a positive pole piece; 2, winding the positive pole piece, the diaphragm and the negative pole piece to form a battery cell, respectively welding the positive end and the negative end of the battery cell with a collector plate, putting the welded battery cell into a shell, and welding the shell; and step 3, injecting an electrolyte, standing and infiltrating, and performing pulse formation. The lithium ion battery has the beneficial effects that the energy loss caused by concentration polarization is reduced and the high-rate charge-discharge performance of the battery is improved by combining the double-layer positive pole piece consisting of the positive active materials with large and small particles and the interfacial film which is rich in inorganic matters and is formed by pulse formation.

The invention relates to a novel top cover assembly manufacturing method and a related product thereof. The requirements of modern batteries for high integration level, high reliability and low cost are met. The manufacturing process is simplified and the manufacturing cost is reduced by adopting the injection molding integrated technology, the explosion-proof structure is formed on the top cover plate in a nicking mode, and the safety and the reliability of the product are improved. In the manufacturing process, firstly, the pole terminal is connected with the top cover plate, the welding piece is welded to the inner welding face of the pole terminal, a current transmission path is optimized, the connection firmness is enhanced, an injection molding space is constructed among the pole terminal, the top cover plate and the welding piece, a thermoplastic material is injected to form an injection molding sealing piece, and all the assemblies are tightly connected. The first through hole and the second through hole are designed in the welding piece and are aligned with the liquid injection hole in the top cover plate, so that liquid can be efficiently and safely injected into the battery cell. And meanwhile, the injection molding efficiency and the product quality are guaranteed by optimizing the flowing path of the injection molding material.

The invention discloses a high-energy output type pulse laser, and belongs to the technical field of pulse lasers. The laser comprises a high-energy output single longitudinal mode oscillation system, a first optical isolator, a laser pulse clipping device, a first beam expander, a first total reflective mirror, a second total reflective mirror, a pre-amplification output polaroid, a pre-amplification amplification system, a pre-amplification total reflective mirror, a main amplification total reflective mirror, a second beam expander, a main amplification amplification system and a second optical isolator. A laser beam output by the high-energy output single-longitudinal-mode oscillation system is subjected to optical isolation through a first optical isolator, a laser pulse clipping device and a first beam expander in sequence, and is input into the pre-amplification system through a first total reflection mirror and a second total reflection mirror, and under the action of the pre-amplification total reflection mirror, the laser beam is output to the high-energy output single-longitudinal-mode oscillation system. And pre-amplification laser formed after the energy or power of the laser beam is subjected to secondary amplification treatment by the pre-amplification amplification system sequentially passes through a pre-amplification output polaroid, a main amplification total reflection mirror, a second beam expander, the main amplification amplification system and a second optical isolator. According to the laser, the self-oscillation phenomenon can be avoided, so that the problems that the gains of a pre-amplification-stage amplification system and a main amplification-stage amplification system are reduced and the work of a high-energy output single longitudinal mode oscillation system is unstable are solved.

The invention provides a positive active material, a positive pole piece thereof and a lithium ion battery. The positive active material comprises lithium cobalt oxide with an O3 phase structure and lithium manganate with an O2 phase structure, the mass of the lithium manganate with the O2 phase structure accounts for 10%-35% of the total mass of the positive electrode active material; and the mass of the lithium cobalt oxide with the O3 phase structure accounts for 65-90% of the total mass of the positive electrode active material. According to the invention, the lithium cobalt oxide with the O3 phase structure and the lithium manganate with the O2 phase structure are combined, so that the advantages of the two materials are complemented, high voltage stability and long cycle life provided by the lithium cobalt oxide with the O3 phase structure can be utilized, and high energy density and excellent rate capability of the lithium manganate with the O2 phase structure can be exerted; the gram volume of the positive electrode active material is improved, the energy density of the lithium ion battery is increased, and optimal balance of the energy density, rate capability and cycle performance of the lithium ion battery is realized.

The invention belongs to the technical field of solar energy, and particularly relates to an integrated solar power generation device based on a regulation and control assembly for a heat supply air conditioner, which comprises a base and the like, the base is a load-bearing carrier of the power generation device, the base is fixedly installed on the ground through bolts for supporting, the supporting column is rotatably installed on the base, the installation box is fixedly installed at the top of the supporting column, the installation box is an opening penetrating up and down, and the supporting column is fixedly installed on the installation box. A bottom plate which is not completely closed is fixedly arranged at the bottom opening of the mounting box, and a storage battery is mounted on the bottom plate. The light gathering assembly is matched with the light reflecting part, scattered light is focused on the photovoltaic panel through the reflecting mirror, the photovoltaic power generation efficiency is improved, meanwhile, the storage battery is internally arranged to store redundant power and ensure stable power supply, and the wind power generation assembly can be used for assisting power generation through wind power in a wind environment; the reliability and energy output of the whole power generation device for supplying power to the heat supply air conditioner are further improved.

An eye needle rehabilitation needle device, comprising a patch assembly (2) and a needle body (3) limited in the center of the patch assembly (2), the patch assembly (2) comprises an insulating film layer (21), a conductive layer (22) and a glue layer (23) which are superimposed from top to bottom, and the technical key points are that a plurality of piezoelectric components (1) are fixed on the patch assembly (2), the piezoelectric component (1) comprises a plastic shell (14), a conductive diaphragm (13), a strip-shaped piezoelectric energy trapping piece (12) and a mass block (11) arranged at the end of the piezoelectric energy trapping piece (12); a through hole (211) is reserved on the insulating film layer (21), the shell (14) passes through the through hole (211) and is limited between the insulating film layer (21) and the conductive layer (22) through the flange (141) at the bottom, and the conductive diaphragm (13) is adhesively fixed with the conductive layer (22). It has the advantages of simple structure, convenient use, long stimulation time and the like.

The present invention relates to a self-powered nanofiber coated yarn and a preparation method and application thereof, comprising the following steps: winding carbon fiber around an outer layer of polyurethane to obtain a core yarn; immersing the core yarn in a foaming solution, taking out and pulse heating the carbon fiber to foam the polyurethane to form a core yarn with a microporous structure; mixing graphene with polyvinylidene fluoride to form a PVDF-graphene spinning solution, using the PVDF-graphene spinning solution as the positive and negative electrode spinning solution to perform double-electrode electrostatic spinning to obtain an outer yarn, coating the core yarn with a microporous structure, and pulse heating the carbon fiber after spinning until annealing of PVDF is completed. The nanofiber coated yarn prepared by the present invention has a good self-powered effect, a high energy conversion rate, and good elasticity, can adapt to the severe and complex deformation caused by human body movement, and satisfies the compatibility with textile technology and human comfort at the same time.

The invention relates to the technical field of waste recycling and comprehensive utilization, in particular to a multi-source waste comprehensive utilization system with anaerobic digestion coupled with pyrolysis gasification. According to the method, high-water-content sludge is added into an anaerobic digestion tank for collaborative anaerobic digestion; in the anaerobic digestion sludge conditioning stage, waste with ultralow water content is added and plays a role of a framework supporting material; in the dehydration stage, wastes with medium water content are added; in the drying stage, waste with low water content is added; before the pyrolysis gasification stage, the waste with ultralow water content and the dried sludge are mixed and granulated. According to the method disclosed by the invention, anaerobic digestion and pyrolysis gasification are coupled, so that comprehensive utilization of wastes with high water content, medium water content, low water content and ultralow water content is realized, emission reduction and utilization of CO2 are realized, meanwhile, the heat value of combustible gas generated by pyrolysis gasification is also improved, the energy output of the system is increased, and the energy consumption of the system is reduced. And saving and comprehensive utilization of resources are facilitated.

The application belongs to the technical field of lithium ion batteries, and particularly relates to a lithium-rich manganese-based positive electrode material, a preparation method thereof and a lithium ion battery. The lithium-rich manganese-based positive electrode material comprises xLi2MnO3·(1-x)LiNi a Co b Mn c M d O2, wherein 0.1<=x<=0.6, 0.3<=a<0.4, 0<=b<=0.2, 0.1<=c<0.7, 0<=d<=0.1, a+b+c+d=1, M comprises at least one of Mg, Al, Ti and Zr, the lithium-rich manganese-based positive electrode material comprises secondary particles, the secondary particles comprise: a core, the core comprises a center core and an edge core layer, the edge core layer is coated on the surface of the center core; a shell, the shell is arranged outside the core; an annular gap, the annular gap is located between the core and the shell, at least one bridging point is distributed in the annular gap, and the core and the shell are connected through the bridging point. The positive electrode material has excellent cycle performance and rate performance.