21 results about "High voltage cathode" patented technology

The invention provides a method for modifying a solid electrolyte-high-voltage positive electrode interface by using a double-filler doped interface buffer layer, which is characterized in that the polymer matrix of the interface buffer layer is PEO, and the double fillers are LiPO2F2 and fullerene C60 respectively. A selected solid electrolyte is Li1. 4Al0. 4Ti1. 6 (PO4) 3 (LATP), a positive electrode material is NCM811, and the preparation method comprises the following steps: S1, preparing a precursor solution, dissolving PEO and LiTFSI in a certain amount of acetonitrile, sequentially adding LiPO2F2 and fullerene C60, and heating and stirring uniformly; s2, dispensing a proper amount of the precursor solution obtained in the step S1 on the surface of an LATP sheet, and placing the LATP sheet in an oven for vacuum drying to form a film; and S3, attaching the NCM811 pole piece to the other side of the interface buffer layer. Through the synergistic effect of LiPO2F2 and fullerene C60 in the interface buffer layer, a layer of thin and uniform CEI film rich in LixPOyFz, LiPxFy and C60Fn is spontaneously formed on the surface of NCM811 particles, the structural stability of an NCM811 positive electrode and an electrolyte in the cycle process is effectively improved, and the long cycle life of an LATP-based high-voltage solid-state battery is prolonged.

The invention discloses a sodium ion halide solid electrolyte as well as a preparation method and application thereof, and belongs to the technical field of batteries, the sodium ion halide solid electrolyte realizes optimization of a sodium ion transmission path and a microstructure by doping BH4 anions and O anions into a structure and regulating and controlling the doping amount; the sodium ion migration activation energy is reduced, the ionic conductivity of the product is effectively improved, and meanwhile, the product has oxidation resistance and high electrochemical stability and can be compatible with a high-voltage positive electrode material during application.

The invention discloses a low-concentration ether electrolyte adaptive to a high-voltage high-nickel ternary lithium ion battery, a preparation method of the low-concentration ether electrolyte and the lithium ion battery, and relates to the technical field of batteries. The ether electrolyte comprises a solvent and a solute; the solvent comprises an ether solvent, and is specifically at least one of 4-cyano tetrahydropyran, 2-(tetrahydro-2H-pyran-4-yl) acetonitrile, 2-methoxyacetonitrile, 2-ethyoxyl acetonitrile, 3-methoxypropionitrile, 3-ethyoxyl propionitrile, 3-butoxyl propionitrile, ethylene glycol bis (propionitrile) ether and 3-{2-[2-(2-cyano ethyoxyl) ethyoxyl] ethyoxyl} propionitrile. The ether solvent contains cyano groups, the strong electronegativity of the cyano groups enables the cyano groups to be coordinated with transition metal ions in the ternary material, and the cyano groups are preferentially adsorbed at the interface of the positive electrode material, so that the arrangement of solvent molecules at the interface has directivity, the proportion of ether oxygen bonds and carbon hydrogen atoms in double electric layers is reduced, and the performance of the positive electrode material is improved. And the sites which are easy to generate dehydrogenation reaction in the molecules are far away from the high-voltage positive electrode interface which is easy to generate oxidation reaction.

The invention discloses a gel polymer electrolyte based on sulfuryl electrolyte and a preparation method and application thereof, and the preparation method comprises the following steps: S1, mixing a lithium salt with a sulfuryl organic solvent, and then adding a weak solvation solvent to obtain a basic electrolyte; s2, dissolving a monomer and a free radical initiator in the basic electrolyte to form a precursor solution; and S3, assembling the precursor solution in a battery, and heating at 60-80 DEG C for 4-24 hours to obtain the gel polymer electrolyte. The gel polymer electrolyte prepared by the invention presents a solvation structure which takes lithium salt anions as main components, which is contributed by the weak solvation ability of one of the solvents, and the generated inorganic interface-rich layer is beneficial to stabilizing the phase change of a high-voltage cathode and inhibiting the growth of metal lithium dendrites or the co-intercalation behavior of a graphite cathode at the same time; while good electrochemical stability of a sulfonyl electrolyte with good thermal stability and a high-nickel lithium metal battery system is considered, the construction mode of an anion-rich solvation structure is expanded.

Pairing of Li2ZrCl6 (LZC) and Li6PS5Cl (LPSC) solid electrolytes, which increases the effective electrochemical and chemical stability window of the electrolyte of lithium-based solid-state batteries, and enables stable cycling with a high voltage cathode and a metallic anode, with the potential to greatly enhance solid-state battery energy density.

The application discloses a high-energy extremely-short-pulse-width incandescent light source system based on argon, and relates to the field of air flow tests.The high-energy extremely-short-pulse-width incandescent light source system comprises a high-voltage electrode for performing arc flash when high voltage is applied, the high-voltage electrode comprises a high-voltage anode and a high-voltage cathode capable of performing arc flash when high voltage is applied, and the high-voltage anode and the high-voltage cathode have a predetermined distance; an argon supply device for supplying argon between the high-voltage anode and the high-voltage cathode; a light device and a condenser lens group oppositely arranged on both sides of the high-voltage electrode; a power supply for supplying power to a high-voltage energy storage device, wherein the high-voltage energy storage device is electrically connected with the high-voltage electrode; a control module for performing time sequence control on the high-voltage anode and the high-voltage cathode; and an input and output module connected with the control module and the power supply.The application uses argon instead of conventional air as an ionization medium in the high-voltage electrode, so that the extremely-short-pulse-width can be realized when arc flash occurs, and the electrode can be prevented from being oxidized and damaged.

This invention belongs to the field of nanomaterials, materials science and energy storage devices, and more specifically, it relates to the development of cathode materials for lithium-ion batteries. The objective of the invention is to improve the efficiency of lithium-ion batteries by ensuring uniform distribution of lithium cobalt phosphate nanoparticles in carbon nanofibers obtained from a single solution using electrospinning and thermal treatment methods, making them suitable for use as cathode materials. The technical result of the invention: it is possible to ensure uniform distribution of lithium cobalt phosphate nanoparticles in carbon nanofibers obtained by electrospinning and thermal treatment, control the morphology and particle size of the cathode material, distribution uniformity, and increase the formation efficiency of the lithium cobalt phosphate cathode by increasing its electrochemical performance. The technical result is achieved by coating lithium cobalt phosphate with carbon by electrospinning and heat treatment, which simplifies and makes the synthesis process more efficient. By simultaneously forming lithium cobalt phosphate with polymer carbonization, the carbon layer is immediately and uniformly coated on the surface of the nanofiber, improving its conductive properties. The material obtained by this method can be used as a high-voltage and long-lasting cathode material, increasing the performance of lithium-ion batteries.

The present invention generally relates to electrolytes for various electrochemical devices. In some cases, it is relatively safe to use the electrolyte; for example, the electrolyte can withstand overheating, fire, combustion, explosion, etc. In some embodiments, such electrolytes can be used for certain types of high-voltage cathode materials. In some cases, the electrolyte can include ion dissociation compounds that can dissociate tight ion pairs. Non-limiting examples of ion dissociation compounds include trialkyl phosphates or sulfones, etc. Other aspects of the present invention generally relate to devices including such electrolytes, methods for making or using such electrolytes, or kits including such electrolytes, etc.

The invention discloses a high-energy ultra-short pulse width incandescent light source system based on argon, and relates to the field of air flow tests, the high-energy ultra-short pulse width incandescent light source system comprises a high-voltage electrode for performing arc discharge flash when high voltage is applied, and the high-voltage electrode comprises a high-voltage anode and a high-voltage cathode which can perform arc discharge flash when high voltage is applied, a preset distance is formed between the high-voltage anode and the high-voltage cathode; the argon supply device is used for conveying argon between the high-voltage anode and the high-voltage cathode; the focusing device and the condensing lens group are oppositely arranged on the two sides of the high-voltage electrode; the power supply supplies power to the high-voltage energy storage device, and the high-voltage energy storage device is electrically connected with the high-voltage electrode; the control module is used for performing time sequence control on the high-voltage anode and the high-voltage cathode; and the input and output module is connected with the control module and the power supply. Argon instead of conventional air is used as an ionization medium in the high-voltage electrode, so that extremely short pulse width can be realized during arc flash, and the electrode is prevented from being oxidized and damaged.

The vacuum rotor-free single-phase generator consists of a storage battery, a vacuum box, an inner copper pole, a silicon steel sheet, a coil, an outer copper pole, a high-voltage cathode tube, a high-voltage anode tube, a negative electricity high-voltage pack and a positive electricity high-voltage pack, and is characterized in that a winding consisting of the silicon steel sheet and the coil is arranged in the vacuum box, and the copper pole is wrapped inside and outside the winding; a high-voltage anode tube and a high-voltage cathode tube are placed on the copper electrode to attract electrons, voltage generated by rotation of a traditional generator is replaced, and the purpose of power generation of the traditional generator is achieved.

The invention relates to a nanodose measuring device, system and method. The nanodose measuring device comprises a main frame body and an electric field insulation protection structure, in the electric field insulation protection structure, a cavity is formed in the center of a high-voltage protection assembly, and a high-resistance dielectric plate is arranged on the outer side of the bottom of the cavity; the high-voltage insulation assembly is provided with a negative high-voltage cathode feed channel penetrating through the high-voltage insulation assembly, so that the non-penetrated part of the high-voltage insulation assembly forms a blocking part; the edge parts of the high-voltage protection assembly and the high-voltage insulation assembly are nested with each other, and the high-voltage protection assembly and the blocking part form an insulation space body wrapping the negative high-voltage cathode feed channel; the cathode vacuum cover plate is sleeved outside the insulating space body, and a vacuum sealing opening of the cathode vacuum cover plate is nested in the end part of the negative high-voltage cathode feed channel; the cathode high-voltage wire and the anode electrode form a high-voltage electric field, so that a narrow and extended breakdown path is formed in a gap between the cathode high-voltage wire and the cathode vacuum cover plate, and the phenomenon of gas breakdown between the cathode high-voltage wire and the cathode vacuum cover plate is avoided.

The invention discloses a NiMoO4 (at) Ni0. 5Co-MOF / CC composite material and a preparation method of the composite material. Firstly, raw carbon cloth is subjected to water bath activation, then NiMoO4 / CC-loaded carbon cloth is prepared from the carbon cloth subjected to water bath activation, nickel salt, molybdenum salt, ammonium fluoride and urea, and then the NiMoO4 / Ni0. 5Co-MOF / CC composite structure electrode material is prepared through high-voltage cathode constant-potential deposition of a nickel-cobalt metal organic framework. According to the prepared composite electrode material, the advantage of high conductivity of NiMoO4 is combined, so that a rapid electron transmission channel is provided for the oxidation-reduction reaction of MOF, meanwhile, the existence of MOF inhibits volume expansion and structure collapse of NiMoO4 nanosheets in the charging and discharging process, and the cycling stability is improved; the preparation method is simple in operation process, low in material cost and good in super-capacitor performance, and has a good application prospect when being used as a super-capacitor electrode material.

The present invention generally relates to electrolytes for use in various electrochemical devices. In some cases, the electrolytes are relatively safe to use; for example, the electrolytes may be resistant to overheating, catching on fire, burning, exploding, etc. In some embodiments, such electrolytes may be useful for certain types of high-voltage cathode materials. In some cases, the electrolytes may include ion dissociation compounds that can dissociate tight ion pairs. Non-limiting examples of ion dissociation compounds include trialkyl phosphates, sulfones, or the like. Other aspects of the invention are generally directed to devices including such electrolytes, methods of making or using such electrolytes, kits including such electrolytes, or the like.

The invention relates to a multivalent cation co-doped sub-nanoscale high-conductivity coating for a high-voltage positive electrode and sulfide electrolyte interface and a preparation method. The component molecular formula of the high-conductivity coating is Lia (Nb1-xMx) O3, multivalent cation M is selected from at least one of Zr < 4 + >, Ta < 5 + > and Sc < 3 + >, and the molar content x of Mn < + > is limited in a range of 5mol%-50mol% of the total molar content. A represents the molar ratio of Li < + >; the thickness of the high-conductivity coating is controlled within the sub-nanometer range of 1-5 nm, and the ionic conductivity reaches 10 <-4 > S.cm <-1 > or above. The high-conductivity coating can isolate SSE oxygenolysis and is good in stability, and more importantly, the conductivity of body ions can be improved and the impedance of the space charge layer can be actively regulated and controlled at the same time, so that gt; and ultralow interface impedance is realized under 4.2 V high potential.

The invention discloses a gel polymer electrolyte based on a three-layer asymmetric gradient structure as well as a preparation method and application of the gel polymer electrolyte, and relates to the technical field of electrolyte materials of high-voltage lithium metal batteries. The gel polymer electrolyte comprises a three-layer structure of a cathode side layer, a middle layer and an anode side layer which are sequentially stacked, the three-layer structure takes polyvinylidene fluoride-hexafluoropropylene copolymer as a matrix and realizes functional partition through gradient doping of inorganic filler, and the inorganic filler is sodium niobate nanoparticles and gamma-Al2O3 particles; the components of each layer are accurately regulated and controlled, collaborative optimization of a lithium metal anode-electrolyte-high-voltage cathode interface and mechanical strength is realized, ohmic polarization and concentration polarization are reduced through a gradient structure, the ion transmission efficiency is improved, and the performance of the lithium ion battery is improved. The problems that an electrolyte in an existing high-voltage lithium metal battery is insufficient in electrode-electrolyte interface stability, poor in ion transport kinetics, weak in mechanical property, potential in safety hazard and the like are solved.

A solid electrolyte material comprising Li, T, X and A wherein T is at least one of P, As, Si, Ge, Al, and B; X is BH4; A is S, Se, or N. The solid electrolyte material may include glass ceramic and / or mixed crystalline phases, and exhibits high ionic conductivity and compatibility with high voltage cathodes and lithium metal anodes.

The present invention provides a rechargeable lithium metal cell comprising: an anode containing lithium metal; a cathode containing a high-voltage cathode material; and a plurality of lithium conductive layers interposed between the anode and the cathode, wherein the lithium conductive layer comprises a solid polymer anode liquid layer adjacent to the anode and one or more further electrolyte layers separating the polymer anode liquid layer from the cathode, and the solid polymer anode liquid layer comprises (i) a block copolymer comprising at least one hydrophobic nonionic block and at least one ionic block, and (ii) a lithium salt, and the solid polymer anode liquid layer has at least two glass transition temperature (Tg) values.

The invention discloses an emission type plasma reactor which comprises a machine shell and a high-voltage power box, an ozone decomposition net is arranged in the machine shell, two reactors are installed on the top face of the ozone decomposition net, an air inlet shutter is connected to the top face of the machine shell, and a first high-voltage plug and a second high-voltage plug are arranged at one ends of the two reactors respectively. And an electric control box is arranged in the shell. According to the device, needle-ring type plasma disinfection factors are emitted to the filter screen through the machine shell, the electric control box, the high-voltage power supply, the reactor, the ozonolysis net, the special pipeline, the high-voltage anode gold needle and the high-voltage cathode gold ring, the breeding variation problem of bacterial viruses carried by the filter screen is effectively controlled, and the device can be used for effectively solving the bacterial viruses carried by the filter screen of an air conditioner and a disinfector. The emission type plasma air disinfector has emission disinfection capability, and the emission type plasma air disinfector is installed at an air return port of a central air conditioner and effectively kills indoor air and bacteria and viruses on a filter screen.

Novel, high voltage cathode active materials for non-aqueous ammonia based primary and reserve batteries are described therein, as well as non-aqueous electrolytes supporting high voltage, and various anodes, separators and cell constructions are disclosed. Said materials provide higher power output at low temperatures over prior art ammonia based batteries.

The invention relates to a method for purifying gas, which can be applied to the fuel combustion process in the energy field and the coking, coal and chemical industry. The method for purifying the fuel gas comprises the following steps: carrying out ozone treatment on to-be-purified gas, then treating the to-be-purified gas subjected to ozone treatment by using a catholyte and an anolyte in sequence to form a catholyte condensate and an anolyte condensate, and discharging the catholyte condensate and the anolyte condensate. Purified gas is subjected to oxygen enrichment treatment through ozone and then is discharged into the environment. According to the invention, the ozone-treated gas is sequentially treated using a high-voltage cathode electrolyte liquid mist and a high-voltage anode electrolyte liquid mist. When a large amount of fuel gas is treated, the gas to be purified is divided into two or more gas flows after ozone treatment, and each gas flow to be purified is sequentially treated. The purification degree of a large amount of fuel gas is improved.

A lithium battery is provided which includes an anode and a cathode, wherein the cathode includes lithium manganese nickel oxide spinel having a dual particle structure, the dual particle structure including primary nanoparticles having a mean particle size of less than nanometers segregated from secondary microparticles having a mean particle size of at least one micron, wherein the primary nanoparticles are coated with a polymer coating and connected using a conducting network. A corresponding cathode material for a lithium battery, and a method of making a cathode material, are also provided.