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93results about How to "Reduce bloat" patented technology

Silicon-based negative pole piece and lithium ion battery comprising same

The invention provides a silicon-based negative pole piece and a lithium ion battery comprising the same, and relates to the technical field of lithium ion batteries. Comprising a negative electrode current collector, a second active material layer arranged on at least one surface of the negative electrode current collector, and a first active material layer arranged on the surface of the second active material layer. The design of the two active material layers ensures high energy density, and meanwhile, the formula design is optimized by combining the bonding characteristic of the interface layer, so that large internal stress is prevented from being generated in the charging and discharging process; the organic porous cross-linked polymer is applied to the negative pole piece, and the polymer is loose and porous and can be subjected to cross-linked polymerization in a high-temperature process, so that negative pole particles are tighter, expansion of a silicon negative pole in a charging and discharging process can be buffered, and stripping and cracking of the pole piece are prevented.
Owner:华鼎国联动力电池有限公司

Fast-charging low-temperature graphite composite material as well as preparation method and application thereof

The invention discloses a fast-charging low-temperature graphite composite material, a preparation method and application thereof, the composite material is of a core-shell structure, the core is porous graphite and a carbon nanotube doped with the porous graphite, and the shell is composed of a lithium supplement agent and a lithium sulfonate complex of the lithium supplement agent. The preparation method comprises the following steps: soaking porous graphite in a conductive polymer solution, adding a catalyst, a cross-linking agent and an oxidizing agent, carrying out oxidative polymerization and carbonization to obtain catalyst-doped porous graphite, and introducing carbon source gas through a vapor deposition method to obtain carbon nanotube-doped porous graphite; and adding the obtained material into a lithium sulfonate solution, adding a lithium supplement agent, uniformly mixing, and carrying out spray drying to obtain the graphite composite material. According to the obtained material, the electronic conductivity of the material is improved by using the carbon nanotubes grown on the inner core, and the lithium sulfonate coated on the outer shell has relatively strong solvation capability, so that the transmission rate of lithium ions is improved, and the rate capability is improved; meanwhile, the lithium supplement agent releases lithium ions in the charging and discharging process, the first efficiency is improved, and the low-temperature and fast-charging performance is improved.
Owner:广东宏璟新能源科技有限公司

Wide-temperature-range multistage phase-change temperature-adjusting asphalt mixture and preparation method thereof

ActiveCN119551930Areduce the maximum temperatureIncreased durabilityClimate change adaptationAsphaltHot Temperature
The invention discloses a preparation method of a wide-temperature-range multistage phase-change temperature-adjusting asphalt mixture. The preparation method comprises the following steps: respectively preparing a plurality of different composite organic eutectic phase-change materials; a plurality of different composite organic eutectic phase-change materials are compounded according to different proportions to obtain the wide-temperature-range multistage phase-change material. The wide-temperature-range multi-stage phase-change material is doped into an asphalt mixture according to the mass ratio of 3%-5%, and the wide-temperature-range multi-stage phase-change temperature-adjusting asphalt mixture is formed. The wide-temperature-range multi-stage phase-change temperature-adjusting asphalt mixture disclosed by the invention can continuously play a phase-change heat storage function in a high-temperature environment in summer, and achieves the effects of delaying the pavement temperature change rate, reducing the pavement maximum temperature, delaying the daily maximum appearance time, reducing the pavement surface temperature and improving the pavement temperature. Therefore, the urban heat island effect can be relieved, and the pavement durability is prolonged.
Owner:CHANGAN UNIV

Pole piece, roll core and battery

The invention provides a pole piece, a roll core and a battery, relates to the technical field of batteries, and is used for solving the technical problem that an active material layer at a knurling bulge is separated from a current collector due to the fact that the knurling bulge is arranged on the pole piece in the prior art. The pole piece comprises the current collector, a first active material layer and a second active material layer; the current collector has a first surface and a second surface opposite to each other, the first active material layer is arranged on the first surface, and the second active material layer is arranged on the second surface; a plurality of first convex parts are arranged on the first active material layer, and a plurality of concave parts corresponding to the first convex parts are arranged on the second active material layer; the current collector is provided with a bent part and a flat part, the bent part is located between the first protruding part and the concave part, the bent part is provided with a plurality of second protruding parts, and the second protruding parts are arranged on the first surface or the second surface in a protruding mode. The second protruding parts can increase the contact area between the active material layer and the current collector, improve the bonding strength between the active material layer and the current collector, and prevent the active material layer from falling off.
Owner:ZHUHAI COSMX BATTERY CO LTD

Aerogel fire prevention and heat preservation integrated board

The utility model discloses an aerogel fire prevention and heat preservation integrated board, and belongs to the technical field of fire prevention and heat preservation integrated boards. An aerogel fireproof and heat-preservation integrated plate comprises a fireproof plate body, a decorative layer, a first aerogel layer, a first waterproof layer, a ventilation layer, a second waterproof layer, a second aerogel layer and a back plate layer are sequentially arranged in the fireproof plate body, aerogel columns are arranged in notches, aerogel films are arranged in the aerogel columns, and the aerogel films are arranged in the notches. The aerogel column is formed by rolling an aerogel film in a staggered manner. According to the aerogel fireproof thermal insulation integrated board, through staggered rolling of the aerogel film, the aerogel columns can effectively block heat, so that a wall is protected from being damaged, cold air can be blocked, thermal insulation of the wall is achieved, the effect of blocking the heat and the cold air can be achieved without too thick first aerogel layers and second aerogel layers, use of aerogel materials is reduced, and the cost is reduced. And the volume of the integrated plate is reduced, so that the installation is convenient.
Owner:成铭江

High-voltage-resistant lithium ion negative pole piece and lithium ion battery

The invention provides a high-voltage-resistant lithium ion negative electrode plate and a lithium ion battery, and the negative electrode plate adopts the particle size grading of graphite with a specific particle size and a silicon material with a specific particle size, and optimizes a low-expansion and high-compaction negative electrode material and a formula. Graphite with a specific particle size and a spheroidal (spherical) silicon negative electrode coated with a conductive agent are subjected to particle size grading, so that the dispersion uniformity can be improved, the compaction density of a pole piece is improved, the pressure resistance of the pole piece is improved, and meanwhile, the expansion of the silicon negative electrode is reduced; the overall dynamic performance and stability of the lithium ion battery prepared by using the negative pole piece can be greatly improved.
Owner:TIANJIN JUYUAN NEW ENERGY TECH CO LTD +1

Composite silicon negative electrode material as well as preparation method and application thereof

The invention relates to the technical field of electrode materials, in particular to a composite silicon negative electrode material suitable for a sulfide-based all-solid-state battery and a preparation method and application thereof, and the preparation method comprises the following steps: (1) generating a metal organic framework material on the surface of a nano silicon material through an in-situ growth method; (2) carbonizing the metal organic framework material on the surface of the nano silicon material through calcination treatment to form a nitrogen-doped porous carbon material, so as to obtain a Si-NC material; and (3) generating a sulfide solid electrolyte on the surface of the Si-NC material through an in-situ growth method to obtain the Si-NC-SE composite silicon negative electrode material. According to the invention, the surface of the Si material is coated with the nitrogen-doped porous carbon material (NC) through an in-situ generation technology, and the sulfide solid electrolyte is generated in situ, so that the conductivity of the composite silicon negative electrode material and the cycling stability of the sulfide-based all-solid-state battery adopting the composite silicon negative electrode material are improved.
Owner:GTC-POWER ZHUHAI TECH CO LTD

Spherical graphite material as well as preparation method and application thereof

The invention provides a spherical graphite material and a preparation method and application thereof, and the spherical graphite material meets the following conditions: the r value of the spherical graphite material is gt; 0.7, the sphericity degree of the spherical graphite material is larger than or equal to 0.75, 10 30 nm * 30 nm areas are randomly selected for any cross section of particles of the spherical graphite material, TEM images are obtained respectively, and graphite lattice layer-amorphous carbon layer-graphite lattice layer crystal form change areas exist in the TEM images of not larger than 3 areas. The prepared lithium-ion battery cathode material has the characteristics of high tap density and small orientation, so that the lithium-ion battery cathode material shows excellent processability, and shows the characteristic of low expansion when being applied to the lithium-ion battery cathode material. The graphite material is high in graphitization degree, and shows the characteristics of high capacity and high first efficiency when being applied to a lithium ion battery negative electrode material.
Owner:SICHUAN ZICHEN TECH CO LTD

Lithium-ion batteries and electronic devices

ActiveCN115425281Bless side effectsImprove long-term cycle stabilityCell electrodesSecondary cells
The present application discloses a lithium-ion battery and an electronic device, and relates to the technical field of lithium-ion batteries. The lithium-ion battery comprises a negative electrode plate, and the negative electrode plate comprises a silicon-carbon material, wherein the silicon-carbon material contains a hydrogen element, and the mass percentage of the hydrogen element is a% based on the mass of the silicon-carbon material. The present application controls the content of the hydrogen element in the silicon-carbon material within a suitable range, thereby reducing the side reaction between the silicon-carbon material and the electrolyte, and improving the long-term cycle stability of the lithium-ion battery.
Owner:NINGDE AMPEREX TECHNOLOGY LTD

Colorectal post-surgery drainage device with pressure reduction structure

PendingCN122682115AImprove separation stabilityeasy access
The application discloses a kind of postoperative drainage device of colorectal surgery with pressure reduction structure, including negative pressure ball, drainage catheter, buffer pressure reduction component and drainage end row, drainage catheter inside is equipped with liquid flow channel and airflow channel, buffer pressure reduction component includes shunt bottle and guide pipe, shunt bottle inner wall inside is equipped with air chamber, inner wall surface is equipped with a plurality of annular liquid separation gas permeable membrane, guide pipe is bent back flow shape and with shunt bottle forms integrated inverted bucket shape sealed bottle structure, so that liquid is deposited to shunt bottle lower area preferentially, while gas is gathered in upper area and then enters air cavity through liquid separation gas permeable membrane and is discharged along airflow channel, realize gas-liquid shunt pressure reduction.The application can form stable gas-liquid separation path without complex mechanical valve structure, can reduce the risk of viscous fecal plug, and maintain continuous exhaust pressure reduction effect in different body position state of patient, to reduce postoperative abdominal distension and anastomotic stoma pressure risk.
Owner:THE FIRST AFFILIATED HOSPITAL OF WENZHOU MEDICAL UNIV

Pole piece of lithium ion battery and preparation method of pole piece

The invention provides a pole piece of a lithium ion battery and a preparation method of the pole piece, the pole piece of the lithium ion battery comprises a current collector and an active material coated on the current collector, and by arranging the active material and an adhesive, the active material can be conveniently and rapidly fixed when being extruded and arranged on the current collector along an angle; the assembly state of the active material on the current collector is stabilized, the active material is placed in the slit die cavity to be extruded, the active material moves and deforms towards the single side direction, so that the structure becomes long and narrow, and the end part of the long and narrow active material is connected with the current collector to be rolled, so that the tortuosity of the lithium ion battery pole piece is reduced, and the service life of the lithium ion battery pole piece is prolonged. And the migration rate of lithium ions in the pole piece and the embedding rate of the lithium ions in the active material are accelerated, meanwhile, the problem that the pole piece is expanded and increased due to lithium ion embedding in the thickness direction of the pole piece is solved, and the probability of deformation of the lithium ion battery is reduced.
Owner:FUZHOU JERRY KINETIC ENERGY TECHNOLOGY CO LTD

Negative electrode plate, electrochemical device and electronic device

This disclosure provides a negative electrode, an electrochemical device, and an electronic device. The negative electrode includes: a current collector; and an active material layer located on the current collector; wherein the active material layer comprises a silicon-based material, and the minimum mass ratio of silicon element in the active material layer at different locations within the same area is X1, the maximum mass ratio is X2, and the value of X1 / X2 is M, where M ≥ 0.7; wherein the minimum weight loss ratio of the active material layer at different locations within the same area via thermogravimetric analysis (TG) at 800°C is Y1, the maximum weight loss ratio is Y2, and the value of Y1 / Y2 is N, where N ≥ 0.7. This disclosure improves the rate performance and cycle performance of the electrochemical device and reduces the expansion of the electrode assembly by uniformly dispersing the silicon-based material and binder in the active material layer.
Owner:NINGDE AMPEREX TECHNOLOGY LTD

An auxiliary exhaust pillow

ActiveCN224584982Ueasy to movePromote natural elimination
The utility model discloses an auxiliary exhaust pillow, including one for human body kneels and lies in prone position posture air cushion, and air cushion is the flexible structure formed through the inflation in hollow part, the first support part is arranged in the center of air cushion, and the second support part is arranged in the tail part of air cushion, and air cushion is divided into two cavities through the first support part, and two cavities are first cavity and second cavity respectively, the first through -hole that is adapted to the outer contour of face is seted up in the first cavity of air cushion top portion position. Through design for human body kneels and lies in prone position using air cushion structure, and cooperate the support of first support part to abdomen, make that patient abdomen is in natural suspension or slight pressure state, combine the posture of knee chest position, significantly promote the movement and natural discharge of abdominal cavity residual gas to rectum direction, effectively alleviate postoperative abdominal distension and abdominal pain. And utilize the space of first cavity can conveniently use cell -phone, and the patient uses cell -phone and carries out office or entertainment.
Owner:巫继敏

Silicon-carbon anode materials for use in sulfide solid-state batteries and their modification methods

This invention relates to a silicon-carbon anode material for use in sulfide solid-state batteries, a modification method thereof, and a sulfide solid-state battery and its preparation method. The modification method includes: providing a porous silicon-carbon material, dispersing it in pure water or anhydrous ethanol to obtain solution A; adding a metal source to pure water, and adding oxalic acid or an alkaline solution dropwise while stirring until homogeneous to obtain solution B; transferring solution A to a water bath for stirring, and slowly adding solution B dropwise until the water evaporates, uniformly coating the surface of the silicon-carbon material with the precursor material to obtain the coated material; drying the coated material, and then heating and holding it under a nitrogen atmosphere to convert the surface metal oxide precursor into metal oxide, thus obtaining the silicon-carbon anode material. This invention avoids the addition of a solid electrolyte by constructing a lithium-ion transport layer in situ on the porous silicon-carbon material, thereby improving the initial discharge capacity and cycle stability of the battery, and achieving high capacity retention.
Owner:SHENZHEN SOLID ADVANCED MATERIALS TECH CO LTD

A novel soft-pack PACK structure

ActiveCN224288448UundamagedGuaranteed overcurrentBattery isolationSecondary cellsEpoxyBusbar
This utility model relates to the field of battery cell technology and discloses a novel soft-pack PACK structure, including a housing. A cover is fixedly connected to the outer wall of the housing, and a sealing ring is fixedly connected to the inner wall of the cover. A support is installed inside the housing, and an epoxy board is fixedly connected to the outer wall of the support. Copper-aluminum composite busbars are installed on the left and right outer walls of the epoxy board, with threaded rods threaded into the interior of the copper-aluminum composite busbars. An aluminum busbar is fixedly connected inside the epoxy board, and a pressure strip is provided on the outer wall of the aluminum busbar. In this utility model, the housing and cover house the battery cells to protect them from external impact damage. An epoxy board is placed on the side of the support, and then an aluminum busbar is installed inside the epoxy board. A pressure strip is then fixed to one side of the aluminum busbar, and a data acquisition line is placed between the pressure strip and the aluminum busbar. This achieves the effects of ensuring battery cell overcurrent, welding strength, and stable data acquisition.
Owner:JIANGSU HUAYOU ENERGY TECH CO LTD

Lithium mineral-free heat-resistant ceramic clay and preparation method thereof

The invention discloses lithium mineral-free heat-resistant ceramic mud and a preparation method thereof, and relates to the technical field of ceramic materials. The invention discloses a lithium mineral-free heat-resistant ceramic clay preparation method, which comprises: blending kaolin, alumina, titanium dioxide, quartz, potassium feldspar and magnesium oxide according to the weight part ratio of the raw materials to obtain a dry material; blending the admixture with water, then blending with the dry material, and pugging to obtain the heat-resistant ceramic clay, the ceramic mud prepared by adding the admixture prepared in the invention into heat-resistant ceramic mud can be applied to inner containers of electric cookers and kitchen utensils after being calcined, and not only has thermal stability and thermal shock resistance, but also has high breaking strength and low expansion coefficient.
Owner:广东枫树陶瓷原料有限公司

Graphite particles, their preparation methods, batteries and energy storage devices

ActiveCN120657123BOrientation degree OI value is smallIncrease the number of cycles
This application provides graphite particles, a method for preparing the same, a battery, and an energy storage device. The graphite particles in this application satisfy the relationship: 0.8 ≤ La / Lc ≤ 1.6, where La is the average crystallite length of the graphite particles, and Lc is the average crystallite height of the graphite particles. The graphite particles in this application exhibit high cycle performance.
Owner:XIAMEN HITHIUM ENERGY STORAGE TECHNOLOGY CO LTD

High-energy-density lithium ion battery

The invention belongs to the technical field of lithium ion batteries, and provides a high-energy-density lithium ion battery. A main body of the high-energy-density lithium ion battery is provided with an expansion suppression device; the expansion suppression device of the battery comprises a shell, foamed silica gel and a battery cell; the inner wall of the shell is filled with the foaming silica gel, and the filling thickness of the foaming silica gel is 0.3-5 mm. According to the invention, the battery cell is directly sleeved in the double-opening shell with the foamed silica gel, the foamed silica gel filled in the shell can absorb the expansion stress of the battery cell, and the double-opening hollow shell can effectively inhibit expansion, so that the high-energy density battery is obtained. The high-energy-density battery can effectively prevent the expansion suppression shell from directly contacting with the electrolyte to generate reaction, and in addition, the high-energy-density battery is simple in structure, simple to operate and low in use cost.
Owner:惠州赣锋锂电科技有限公司

An artificial graphite composite material for energy storage battery and its preparation method and application

The present invention belongs to the technical field of lithium ion battery material preparation, and discloses an artificial graphite composite material used in energy storage batteries, and a preparation method and application thereof. The artificial graphite composite material used in the energy storage battery is a core-shell structure, wherein the core is graphite, and the outer shells are, from the inside to the outside, the first outer shell layer of the inorganic lithium salt composite layer and the second outer shell layer of the polymer organic lithium coating layer; the thickness ratio of the core, the first outer shell layer and the second outer shell layer is 70-90:5-15:5-15. The present invention prepares low-expansion graphite with a low degree of graphitization and coats the double-layer shell of inorganic lithium salt and organic lithium salt on its surface, thereby improving the transmission rate of lithium ions during charging and discharging and reducing the lithium ions consumed by the SEI film during the cycle, thereby improving the cycle performance of the material under high rate conditions.
Owner:LIAONING ZHONGHONG ENERGY NEW MATERIAL CO LTD

Battery formation fixture and testing equipment

The present invention relates to the field of new energy batteries, and discloses a battery formation fixing device and detection equipment, which can apply a pressing force to the battery from the outside, reduce the expansion of the battery core, prevent the gap between the outer pole pieces of the battery from becoming larger, and make the battery less likely to produce brown spots and black spots and accompanied by lithium precipitation after the air tightness test. The device includes a bottom plate, a first limit assembly, a second limit assembly and an elastic member, the first limit assembly includes two positioning members, the two positioning members are relatively arranged on the bottom plate, and the battery abuts between the two positioning members; the second limit assembly is arranged on the bottom plate and located between the two positioning members, the second limit assembly includes a fixed plate and at least one clamping plate, the fixed plate is fixed relative to the bottom plate, the clamping plate is slidably arranged relative to the bottom plate, and a battery accommodating space is formed between the clamping plate and the fixed plate and between adjacent clamping plates; the elastic member is arranged between the fixed plate and the battery and / or between the clamping plate and the battery, and the area ratio of the elastic member to the clamping plate is in the range of 0.9-1.
Owner:CALB GROUP CO LTD

Portable multifunctional in-situ test probe for permeability of geological structural surface of surrounding rock

The invention discloses a portable multifunctional surrounding rock geological structural surface permeability in-situ test probe in the technical field of geological monitoring, and the portable multifunctional surrounding rock geological structural surface permeability in-situ test probe comprises a probe main body, two groups of plug units arranged at the two ends of the probe main body, and sealing parts connected to the outer ends of the plug units, the connecting pipes are symmetrically arranged at the two ends of the detection section pipe, the connecting seats are arranged between each group of connecting pipes and the detection section pipe, and the limiting seats are arranged at the outer ends of each group of connecting pipes. A certain number of electrodes, pore pressure sensors, optical sensors, sonic sensors and other detection elements are arranged on the detection section pipe in a concentrated mode, multifunctional data are integrated, the mode of combined testing in the three directions of light, sound and electricity is achieved, rock mass permeability parameters are comprehensively interpreted, and the rock mass permeability detection accuracy is improved. And the accuracy of the detection data is effectively and powerfully guaranteed.
Owner:CHINA UNIV OF MINING & TECH

Positive plate and battery cell

The invention provides a positive plate and a battery cell, relates to the technical field of batteries, and is used for solving the technical problem of breakage of a pole piece caused by embossing on the pole piece in the related art, the positive plate comprises a current collector, two surfaces of the current collector are respectively provided with a first active material layer and a second active material layer, a plurality of convex parts are arranged on the first active material layer, and a plurality of concave parts corresponding to the convex parts are arranged on the second active material layer; each of the first active material layer and the second active material layer comprises a plurality of active material particles, and the particle size distribution of the active material particles meets the formula: Dv10: Dv50: Dv90 = 1: (2-8): (3-16). By limiting the particle size distribution of the active material particles in the active material layer, when the large and small particles in the active material layer are mixed and the convex part and the concave part are processed on the positive plate, the small particles are stressed to slide towards two sides and are filled among the large particles, so that the current collector is prevented from being torn while the particles are prevented from being broken; and meanwhile, the height of the lug boss is ensured to meet a preset requirement.
Owner:ZHUHAI COSMX BATTERY CO LTD

A mould structure for forming a profiled double-sided straight body with a release

The utility model discloses a mould structure of special-shaped double -sided straight body demoulding, including front mould and back mould, front mould and back mould are used to install on die -casting machine bed, and be provided with feed port on the front mould, still include demoulding device and cooling device, the demoulding device includes locating post, thimble assembly and sliding sleeve, and locating post fixed mounting is on the front mould, and is used for with the interference fit of die casting, and sliding sleeve sliding installation is on the locating post, and die -casting machine bed is used for driving sliding sleeve to slide in the inside of front mould, the die casting has ladder face after forming, the end surface of sliding sleeve is used for with ladder face contact, and thimble assembly is used for to the die casting and carries out the auxiliary demoulding, the cooling device includes the circulating cold water channel of setting in the inside of locating post, the utility model discloses the purpose is to solve the mould demoulding structure among the prior art, when carrying out demoulding to work piece, and thimble impact arrives work piece, will leave the impact mark on work piece, and then leads to the work piece and appears the flaw, influences the problem of subsequent application.
Owner:FOSHAN ZHANG TONGBIAO HARDWARE PRODUCTS CO LTD

Preparation method of snco-doped hard carbon composite material and sodium ion battery thereof

ActiveCN120841501BImprove conductivityImprove liquid retention capacity
This invention discloses a method for preparing SnCo-doped hard carbon composite material and its application in sodium-ion batteries. The preparation method involves adding an organotin compound to an organic solvent, followed by the addition of a graphene oxide solution. The sodium salt compound is then uniformly dispersed, and a porous tin / graphene compound is prepared through hydrothermal reaction and freeze-drying. This compound is then ground and mixed uniformly with cobalt powder and sintered at 600-1000℃ to obtain a tin-cobalt / graphene composite. This composite is then added to a starch solution, uniformly dispersed, and spray-dried. The mixture is then sintered at 500-800℃ for 1-6 hours under an inert atmosphere, followed by a further increase in temperature to 1000-1800℃ for 1-10 hours to obtain the SnCo-doped hard carbon composite material. The resulting material exhibits excellent power performance and high specific capacity in sodium-ion batteries.
Owner:河北坤天新能源股份有限公司

Graphene / sulfur / silicon multi-component composite material for manufacturing battery electrode, preparation method of graphene / sulfur / silicon multi-component composite material and battery

The invention discloses a graphene / sulfur / silicon multi-component composite material for manufacturing a battery electrode, a preparation method and a battery, and belongs to the technical field of batteries, the graphene / sulfur / silicon multi-component composite material is a multi-component composite material taking graphene as a substrate to load nano sulfur and nano silicon; in the multi-component composite material, nano-silicon is deposited on the surface layer of graphene, and nano-sulfur is uniformly crystallized to the surfaces of nano-silicon particles and among the particles. According to the graphene / sulfur / silicon multi-component composite material and the preparation method thereof, the respective advantages of the composition materials are exerted through a material compounding technology, the defects of a single material are overcome, and the prepared graphene / sulfur / silicon multi-component composite material has the advantages of high charge-discharge capacity, long cycle life, good rate capability and the like.
Owner:AMPREUS WUXI CO LTD

Graphite composite material and preparation method thereof, negative plate, electrochemical device and electronic equipment

The invention discloses a graphite composite material and a preparation method thereof, a negative plate, an electrochemical device and electronic equipment. The graphite composite material comprises an inner core and a coating layer coating the surface of the inner core, the inner core comprises porous graphite and a silicon simple substance, and at least part of the silicon simple substance exists in pores of the porous graphite; the silicon elementary substance accounts for 7.5 wt%-18 wt% of the graphite composite material in percentage by mass; the mesoporous specific pore volume v of the graphite composite material is 0.04-0.1 cm < 3 > / g, and the compaction fitting coefficient K1 is 3.5 * 10 <-3 >-4.5 * 10 <-3 >. The graphite composite material provided by the invention can realize high silicon doping proportion and low expansion, and the battery has good cycle performance when being applied to the battery.
Owner:ENVISION AESC JAPAN LTD

Veneer treatment system and veneer treatment method

The invention discloses a wood veneer treatment system and a wood veneer treatment method. The system comprises a carbonization furnace used for heating and carbonizing wood veneers; the belt conveyor is used for conveying carbonized veneers; the first spraying device is arranged at the first station and used for spraying chemicals to the veneers located on the surface of the belt conveyor; the first drying device is arranged at the second station and is used for drying the medicament on the surface of the veneer; the turn-over mechanism is arranged at the third station and used for picking up the veneers conveyed from the second station, turning over the veneers and placing the veneers on a belt conveyor so as to convey the veneers to a fourth station; the second spraying device is arranged at the fourth station and used for spraying chemicals to the veneers conveyed from the third station; and the second drying device is arranged at the fifth station and used for drying the medicament on the surface of the veneer conveyed by the fourth station. When the system is used and combined with the method for processing the wood veneer, various attributes of the wood veneer can be effectively improved.
Owner:JIANGMEN GLOBAL TIMES TECH CO LTD

Porous silicon-carbon composite material for negative electrode of lithium ion battery and preparation method of porous silicon-carbon composite material

The invention discloses a porous silicon-carbon composite material for a negative electrode of a lithium ion battery and a preparation method thereof, the porous silicon-carbon composite material comprises porous silicon-carbon particles and a coating layer coating the surfaces of the porous silicon-carbon particles, and the porous silicon-carbon particles are formed by dispersedly distributing silicon particles on a porous carbon base material with an aluminum oxide film in pores; and the coating layer is a carbon layer. The aluminum oxide film layer in the holes of the silicon-carbon composite material improves the particle hardness, improves the pressure resistance of the material, improves the electrochemical expansion of the material, and improves the electrochemical cycle performance of the material.
Owner:BERZELIUS (NANJING) CO LTD +1

A method and device for protecting a two-wheeled vehicle embedded toolkit SDK, and a two-wheeled vehicle

PendingCN122595280AIncrease the level of black boxingreduce exposureMicrocontrollerExternal application
This application discloses a security protection method, device, and two-wheeled vehicle for an embedded toolkit SDK (Software-Defined Kit), which is applied to the embedded SDK in the electronic control unit (ECU) of a two-wheeled vehicle. Specifically, the obfuscated core algorithm code is encrypted to obtain encrypted core algorithm code. During the runtime phase of the embedded SDK, in response to calls to the target SDK interface from external applications, the unique identifier of the microcontroller (MCU) in the ECU is verified based on a preset authorization list to obtain the MCU's authorization verification result. If the authorization verification result indicates that the MCU authorization verification is successful, the encrypted core algorithm code is decrypted to obtain obfuscated core algorithm code, which is then loaded into the runtime memory (RAM) for execution. This provides effective security protection for the two-wheeled vehicle embedded toolkit SDK.
Owner:CHONGQING YADEA TECHNOLOGY CO LTD

Battery cell, battery device, energy storage device, and electric device

This application relates to the field of battery technology, specifically to battery cells, battery devices, energy storage devices, and power consumption devices. In the negative electrode sheet of a battery cell, the negative electrode active layer includes a first active layer and a second active layer. The second active layer is disposed between the first active layer and the negative electrode current collector. The first active layer contains a first negative electrode active material, and the second active layer contains a second negative electrode active material. The sphericity of the first and second negative electrode active materials is independently 0.7~0.9, and their roundness is independently 0.42~0.65, respectively. Furthermore, the sphericity and / or roundness of the first negative electrode active material is greater than that of the second negative electrode active material. This application can improve the irreversible thickness growth of the negative electrode sheet during cycling and enhance kinetics, thereby helping to reduce the volume expansion of the cell throughout its life cycle while maintaining fast-charging performance.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD