61results about How to "High specific energy" patented technology

The present application is directed to mesoporous carbon materials comprising bi-functional catalysts. The mesoporous carbon materials find utility in any number of electrical devices, for example, in lithium-air batteries. Methods for making the disclosed carbon materials, and devices comprising the same, are also disclosed.

The invention relates to a core-shell structured lithium nickel manganese cobalt precursor, a fabrication method thereof and application thereof in a lithium ion battery. The precursor is nickel manganese cobalt carbonate and sequentially comprises an inner core and more than one shell layer from inside to outside, and mole concentration of the corresponding Ni is gradually reduced from the innercore to the shell layers sequentially arranged outside. The invention also provides a surface coated lithium nickel manganese cobalt composite material prepared by employing the precursor and the lithium ion battery employing the composite material as a positive electrode material. By the precursor, the problems that the synthesis process of a ternary nickel manganese cobalt positive electrode material is not mature and is complicated, the precursor research is neglected and the improvement of the performance of the ternary nickel manganese cobalt material is limited are solved. In the batteryprepared from a nickel-rich gradient-concentration ternary nickel manganese cobalt positive electrode material, the initial discharge specific capacity under 0.1C rate is larger 194mAh / g, the initialcharge-discharge efficiency is larger than 92%, and the capacity retention rate after circulation for 300 times under 1C rate is larger than 80%.

The battery is composed of the packaging bag made from aluminum-plastic complex film, positive and negative pole pieces, diaphragms, pole ears and electrolyte. The preparing method includes following technical procedures: forming the container for battery core, preparing and shaping positive and negative pole pieces, charging electrolyte, sealking etc. Under general environment, the method can manufacture batteries with different thickness and shapes in low cost and easy operations. The battery possesses the features of high density, lightweight, small size, large discharging current and good periodicity etc.

The invention discloses a lithium metal battery with high specific energy. The battery comprises a liquid system battery composed of a negative electrode, a positive electrode, an electrolyte, a diaphragm or an all-solid battery composed of a negative electrode, a positive electrode and a solid electrolyte membrane, wherein the negative electrode is a lithium-free negative electrode composed of ametal substrate and a lithiophilic metal layer covering the metal substrate and capable of inducing the uniform lithium deposition; the positive electrode is a lithium-rich positive electrode expressed as xLi2MnO3.(1-x)LiMO2, 0<x<1, M = Mn, Ni, Co. The lithiophilic metal on the surface of the lithium-free negative electrode can induce uniform lithium deposition, ensures very high deposition-dissolution efficiency of lithium metal deposited on the negative electrode current collector to obtain a high lithium utilization rate. The lithium-rich material is used as a positive electrode active material. After one cycle, the excess lithium of the positive electrode is stored in the negative electrode in the form of lithium metal in order to supplement the active lithium consumed by a side reaction in the subsequent cycles to obtain high coulombic efficiency and high cycle life. The lithium metal battery has low manufacturing cost, good safety, a long service life and high specific energy.

A low cost, high specific energy and long cycle life lead acid battery includes polymer / metal current collectors. For intermediate electrodes, a current collector includes two polymer grids and a metal foil that is disposed between two grids, and for terminal electrodes, a current collector includes a polymer grid, a polymer sheet and a metal foil that is disposed between the polymer grid and sheet. The surfaces of the grids and metal foil are coated by different conductive and corrosion-resistant composites. The current collectors can be configured as monopolar or bipolar electrodes.

The invention discloses a method for preparing supercapacitor-dedicated active carbon by using mixed molten salts as an activator. According to the method, asphalt or coal tar which is used as a raw material is uniformly mixed with mixed molten salts; under protection of argon or nitrogen, the mixture is placed in a carbonization furnace to be carbonized; and finally, the carbonized product is crushed, washed and dried to obtain active carbon. The active carbon has high specific surface area and effective mesopore-micropore pore size distribution, and has high electrochemical specific capacity and good high-current charge discharge capability and cycling stability.

A method and apparatus for generating energy from a composition containing guanidine and a method for providing the composition containing guanidine. The apparatus includes a container such as tank (1) for providing the composition, and a container such as tank (2) for providing water. The composition is delivered from tank (1) to a container such as reactor (3) for reacting the guadinine composition with water, supplied from tank (2), to form ammonia. The apparatus may also include buffer tank (4) for storing the ammonia produced by the reactor. The ammonia produced from the reactor of the guadinine composition with water is delivered from the buffer tank (4) to a container such as chamber (5) for oxidizing ammonia to form water and nitrogen generating energy

The embodiment of the invention relates to a solid-state lithium battery as well as an electrode-diaphragm layer interface improvement method and application thereof. The solid-state lithium battery comprises a positive electrode, diaphragm layers, a negative electrode and polyester polymer solid electrolyte layers constructed between the positive electrode diaphragm layers and / or between the negative electrode diaphragm layers, wherein the polyester polymer solid electrolyte layer comprises a polyester polymer, a lithium salt and an initiator; the lithium salt and the initiator account for 5%-80% of the total mass of the polyester polymer solid electrolyte layer; the positive electrode and / or the negative electrode also comprise / comprises the polyester polymer solid electrolyte layer introduced by curing.

A self rotating deployed film solar batteries array is composed of film solar batteries, electrical cables, a center axle and connecting lines: many long strip shaped film solar batteries radiate to form a circle or a polygon-array, when linking two adjacent film solar batteries with connecting lines, each film solar battery links to a center axle with electrical cables; film batteries deployed and maintained in an array shape by self rotating centrifugal force in space; film batteries are coiling outside the surface of a center axle before their deployment. The unite weight of thin film battery is only 1 / 30 of traditional solar cell paddle. The film solar batteries array can be used in various satellite, space station and solar power rocket. It will greatly reduce the launching cost, enhance the power for spacecrafts and double the length of service life.

The invention provides a lead-acid storage battery. The lead-acid storage battery comprises a housing, a positive electrode plate, a negative electrode plate, a separating plate and electrolyte, wherein the positive electrode plate, the negative electrode plate and the separating plate are arranged in the housing; the electrolyte is injected into the housing; the positive electrode plate comprises a positive electrode plate grid, and positive electrode lead acid layers which cover two surfaces of the positive electrode plate grid; the positive electrode plate grid is prepared from the following components in percentage by weight: 0.05 to 0.2% of calcium, 0.6 to 1.0% of tin, 0.01 to 0.05% of aluminum, and the balance of lead; the negative electrode plate comprises a negative electrode plate grid, and negative electrode lead acid layers which cover two surfaces of the negative electrode plate grid; the negative electrode plate grid is prepared from the following components in percentage by weight: 0.05 to 0.2% of calcium, 0.1 to 0.5% of tin, 0.01 to 0.05% of aluminum, and the balance of lead. The lead-acid storage battery has the advantages of being high in large-current discharging stability, high in low-temperature starting capacity, outstanding in corrosion resistance, long in circular charging-discharging life, and remarkable in comprehensive performances.

The invention discloses an anti-corrosion conductive ceramic electrode material for sewage and sludge treatment and a preparation method of the anti-corrosion conductive ceramic electrode material. The anti-corrosion conductive ceramic electrode material is characterized in that carbon is used as aggregate; the anti-corrosion conductive ceramic electrode material is prepared from artificial graphite, graphitized mesocarbon microbeads, a reinforcement binder, graphitized carbon fiber and E-44 epoxy resin. The preparation method comprises the following steps of adding a Ti4O7 functional additive having strong electrode performance, simultaneously adding one or several of ceramic anti-wear-corrosion components of TiB2, TiO2, TiC, B2O3, SiO2 and SiC, carrying out solidification, compression molding and high-temperature sintering after adding a mixing solvent and completely mixing the mixture, and finally preparing the anti-corrosion conductive ceramic electrode material. According to the anti-corrosion conductive ceramic electrode material and the preparation method, disclosed by the invention, aiming at an actual working situation of a sewage and sludge treatment environment, unique anti-corrosion components are added while low specific resistance of the anti-corrosion conductive ceramic electrode material is ensured, not only are wearing resistance and corrosion resistance of traditional ceramics obtained, but also excellent conductivity and excellent electrochemical performance are obtained, and the service life is up to more than 3500 hours.

The invention discloses a high-energy silicon-containing lithium battery, wherein the conductive agent of the positive electrode is 0.02-0.06% single-walled carbon nanotubes and 0.2-0.6% graphene: Thenegative electrode sheet is made of the following ingredients in parts by weight: up to 100% of the negative electrode active material, 0-1% of conductive carbon black, 0.02-0.08% of single-walled carbon nanotubes, 1-2% of CMC and 1.2-2.5% of binder; The negative electrode active material is carbon silicon and / or oxygen silicon, and the gram capacity is more than or equal to 650 mAh / g; The binderis prepared from styrene-butadiene rubber, acrylic acid and PMMA in 5-7: 1: 2-4 by weight ratio. The high-energy silicon-containing lithium battery has better charging and discharging stability, volume expansion resistance, cycle performance and stability under the premise of high energy by optimizing the conductive agent composition of the positive and negative electrodes and optimizing the binder.

Provided is an alkali metal-sulfur cell comprising: (a) a quasi-solid cathode containing about 30% to about 95% by volume of a cathode active material (a sulfur-containing material), about 5% to about 40% by volume of a first electrolyte containing an alkali salt dissolved in a solvent and an ion-conducting polymer dissolved, dispersed in or impregnated by a solvent, and about 0.01% to about 30% by volume of a conductive additive wherein the conductive additive, containing conductive filaments, forms a 3D network of electron-conducting pathways such that the quasi-solid electrode has an electrical conductivity from about 10−6 S / cm to about 300 S / cm; (b) an anode; and (c) an ion-conducting membrane or porous separator disposed between the anode and the quasi-solid cathode; wherein the quasi-solid cathode has a thickness from 200 um to 100 cm and a cathode active material having an active material mass loading greater than 10 mg / cm2.

The invention relates to the technical field of battery power supplies and in particular discloses a novel power supply with comprehensive performances of a supercapacitor and a zinc-silver battery. The power supply comprises electrolyte, a positive pole, a diaphragm and a negative pole, wherein the positive pole is isolated from the negative pole; the positive pole, the negative pole and the diaphragm are arranged in a battery shell, and the electrolyte is filled in the battery shell; the positive pole simultaneously has comprehensive capacities of a positive pole of the zinc-silver battery and a positive pole of the supercapacitor; the negative pole simultaneously has comprehensive capacities of a negative pole of the zinc-silver battery and a negative pole of the supercapacitor. According to the power supply, the advantages of high specific power of the supercapacitor and high energy of the zinc-silver battery are integrated, the problems that the battery polarization is sharply increased, the internal loss is increased, the energy storage efficiency is reduced, the voltage fluctuation is great and the like during high-current pulse discharge of the conventional zinc-silver battery are solved, the volume and weight are reduced, and the voltage accuracy and specific energy are improved.

The inventionprovides a positive plate used for a lead-acid storage battery. The positive plate comprises an alloy plate grid and lead-acid layers coating two surfaces of the alloy plate grid, wherein the alloy plate grid is prepared from the following components in percentage by weight: 0.05-0.2% of calcium, 0.6-1.0% of tin, 0.01-0.05% of aluminum and the balance of lead;each lead-acid layer is mainly prepared from the following components in parts by weight: 950-1050 parts of lead powder, 100-110 parts of water and 90-100 parts of sulfuric acid in the specification of 1.4g / cm3. The lead-acid storage battery with the positive platehas the advantages of good heavy-current discharge stability, highlow-temperature start capacity, excellentanti-corrosion performance, longcirculating charge and discharge life and excellent comprehensive performance.

The invention relates to a preparation method for a nano spherical carbon aerogel, and belongs to the technical field of super capacitors. The preparation method comprises the following steps: mixingan alkaline liquid and alginic acid to form a mixed solution, wherein the alginic acid accounts for 2-10% of the total mass of the mixed solution, adding the mixed solution into acetone or ethanol, performing stirring continuously, performing centrifugation, and performing drying to obtain a nano spherical alginic acid-based carbon aerogel; placing the nano spherical alginic acid-based carbon aerogel into a tube furnace, under the protection of a nitrogen gas, raising the temperature to 500-900 DEG C, performing heat preservation, and performing cooling to room temperature, so as to obtain ancarbonized nano spherical alginic acid-based carbon aerogel; and mixing the carbonized nano spherical alginic acid-based carbon aerogel and KOH, placing the mixed material into a tube furnace, raisingthe temperature to 700-1000 DEG C under the protection of a nitrogen gas, performing heat preservation, and performing cooling to room temperature, so as to obtain the activated nano spherical alginic acid-based carbon aerogel. The activated nano spherical carbon aerogel prepared by the method provided by the invention has a high specific surface area and nano hierarchical structure pores; and the activated nano spherical carbon aerogel is used to prepare a super capacitor, and the prepared super capacitor has characteristics of high specific energy, high power and the like.

The invention discloses a lithium battery pack of a large underwater vehicle. The lithium battery pack is characterized by comprising a battery cabin, battery modules, a bus bar, two battery racks, a fastening pressure plate, a battery management system and locking mechanisms, wherein the battery cabin is cylindrical, the head and the tail of the cabin are semispherical, an inlet and an outlet are formed in the upper part of the cabin, the two battery racks are symmetrically arranged on the two sides of the cabin, and a maintenance channel is formed in the middle of the cabin; the cross section of each battery rack is bow-shaped and comprises two straight edges and an arc, and the radius of the arc is the same as that of the inner wall of the battery cabin; the battery rack is divided into an upper layer and a lower layer; each layer is provided with a plurality of compartments, the locking mechanisms are arranged in the compartments, and the battery modules are symmetrically mounted in the compartments. The lithium battery pack provided by the invention is high in volumetric specific energy, good in safety performance, strong in environmental adaptability and convenient to maintain.

The invention relates to a preparation method of a silicon-carbene material and a preparation method of the electrode active material of the silicon-carbene material, wherein in order to improve the yield of silicon-carbene, when a carbon atom ring is grown, a silicon single atom layer is grown in a combined manner or a carbon single atom layer is grown on a silicon ring layer, so that a silicon carbene crystal is formed. According to the technology, an improved plasma reaction cavity and a magnetron sputtering method are used for directly conducting heat treatment at 800-1300 DEG C in the reaction process, when graphene crystal nucleuses are formed within a heating time, the graphene crystal nucleuses and silicon crystal nucleuses are subjected to self-assembly growth to form a three-layer structure with silicon atom layers clamping a carbon atom layer, and a large silicon carbide unit layer, also called silicon carbene, grows; and large-scale growing high-purity silicon carbene as electrode active material of a lithium-sodium alloy rechargeable battery has high specific energy and stable cycle characteristics. The invention also provides a preparation method of a silicon-carbene electrode active material. The silicon-carbene electrode active material has high specific energy and stable cycle characteristics, and can improve the energy density and power density of the lithium-sodium rechargeable battery.

The invention discloses a preparation method of a lithium-deintercalation-state lithium ion battery positive electrode material. The preparation method comprises the steps of performing ball milling on a commercial lithium-intercalation-state positive electrode material and expansion graphite based on a certain proportion, and then performing vacuum drying on the mixture at a temperature of 120 DEG C, then taking out the dried product, and putting the product into a glove box with water oxygen content of less than 0.1ppm to be cooled; next, adding an electrolyte and performing stirring to prepare a paste material; uniformly coating a positive electrode plate with the paste material, and then adding a diaphragm and a lithium sheet in sequence, performing sealing and covering a negative electrode plate to assemble a battery; and after charging formation is completed, detaching the battery, taking out positive electrode powder, and performing soaking, stirring, suction filtration and drying to obtain the lithium-deintercalation-state lithium ion battery positive electrode material. By adoption of the method disclosed in the invention, the lithium ion battery positive electrode material is subjected to lithium-deintercalation treatment directly and then used for the lithium primary battery; and compared with the current lithium primary battery, the battery adopting the positive electrode material disclosed in the invention has higher specific energy and power characteristic, longer storage life, and higher safety performance, so that solid foundation is laid for the research and development of novel individual combat weaponry.

The invention provides a lead-acid storage battery system with a long service life and a method for using the same. The lead-acid storage battery system with the long service life comprises a lead-acid storage battery set A and a high power battery set B with a quasi-capacitance characteristic. According to the working voltage and current needed by an external load, the battery set A and the battery set B with different quantities and characteristics are combined into the lead-acid storage battery system with the long service life through a certain circuit (comprising control). The lead-acid storage battery system with the long service life not only can bring the most of the advantages of the power and service life of the battery set B into full play, but also can bring the most of the advantages of the price and safety of the battery set A into full play so as to effectively improve the power characteristic and prolong the service life of the battery set A.

The invention discloses a lithium battery, which comprises a positive electrode (1) and a composite negative electrode (2), wherein the positive electrode (1) comprises a positive electrode coating (7) formed on a positive electrode current collector (6); the composite negative electrode (2) comprises a carbon porous electrode layer (8) and a metal lithium plate electrode layer (9) which are formed on a negative electrode current collector (10); the reversible lithium de-intercalation capacity ratio of the carbon porous electrode layer (8) to the positive electrode coating (7) ranges from 0.1to 0.9; and a metal lithium plate electrode layer (9) is formed by electro-depositing a layer of compact metal lithium on the surface of the carbon porous electrode layer (8) in a bidirectional pulsecyclic charging mode in the battery formation activation stage. According to the lithium battery preparation method disclosed in the invention, the bidirectional pulse cyclic charging mode is adoptedin the battery activation stage, a compact metal lithium layer is deposited on the carbon porous electrode layer of a negative electrode, and the composite negative electrode is thus obtained. The lithium battery provided by the invention has the advantages of higher specific energy, high-rate discharge, long cycle characteristic and excellent storage performance.

The invention discloses an organic material / graphene composite negative electrode. The composite negative electrode is formed by preparation of an organic material, a graphite carbon material and an auxiliary material, wherein the organic material is a mixture selected from one or more of organic acid / anhydride with a conjugate carbonyl structure. The invention also provides a preparation method of the composite negative electrode and a lithium ion battery manufactured by the composite negative electrode. The organic material / graphene composite negative electrode has the characteristics of high capacity, high power and long service lifetime and has a wide application prospect.

The present a method and apparatus for generating energy from a composition containing guanidine and a method for providing the composition containing guanidine. The apparatus includes a container such a tank (1) for providing the composition, and a container such as tank (2) for providing water. The composition is delivered from tank (1) to a container such as reactor (3) for reacting the guanidine composition with water, supplied from tank (2), to form ammonia. The apparatus may also include buffer tank (4) for storing the ammonia produced by the reactor. The ammonia produced from the reactor of the guanidine composition with water is delivered from the buffer tank (4) to a container such as chamber (5) for oxidizing ammonia to form water and nitrogen generating energy.

The invention relates to a graphene electrode sheet and a manufacturing method, and a method for manufacturing a high specific-energy and ultra-high-power graphene supercapacitor by using the grapheneelectrode sheet and belongs to the new energy storage device technology field. The graphene electrode sheet comprises a current collector and a graphene electrode slurry. The graphene electrode slurry comprises, by weight, 75-93% of graphene, 2-10% of conductive agent, and 5-15% binder. The current collector is a foamed aluminum current collector. The specific surface area of graphene is 1000 to1500 m<2> / g, a tap density is 0.2 to 0.5 g / cm<3>, an aperture is 2 to 10 nm, a particle size is 7 to 10 micron, and a carbon content is greater than 99.8%. The content of an oxygen-containing functional group is less than 0.35 meq / g, a water content is less than 0.40%, and a total metal content is less than 100 ppm. The energy density of the graphene supercapacitor manufactured by the electrode sheet is 12 Wh / kg and a power density is 30.14 kW / kg.

An electrochemical lead-acid accumulator includes negative and positive electrodes. The negative electrode has a current collector formed from a carbon sheet having a thickness between 50 and 200 μm; first and second lead-based layers respectively covering first and second faces of the carbon sheet; and first and second layers of a lead-containing active material, having a thickness between 100 and 500 μm, and arranged on either side of the carbon sheet, respectively on first and second lead-based layers. The positive electrode has a current collector formed from a titanium sheet having a thickness between 50 and 250 μm; first and second electrically conducting metal oxide layers, respectively covering first and second faces of the titanium sheet; and first and second layers of a lead-containing active material, having a thickness comprised between 100 and 500 μm, arranged on either side of the titanium sheet, respectively on first and second metal oxide layers.

The invention relates to a lead-acid battery tube positive plate grouting method, belonging to the technical field of dynamic lead-acid battery. A grouting device is used to drive a grouting suspension into a grouting mold cavity with a pressure pump, and the grouting suspension is driven into the nonwoven drain pipe under high pressure through a second metal pipe. According to the invention, higher gravimetric specific energy and volumetric specific energy are provided, the method can meet the market demands of the tubular lead acid battery. The grouting active material is adopted in the invention, which is favorable for forming 3BS and 4BS, thereby facilitating recrystallization, oxidation and strengthening the bonding force in the curing process, increasing the initial capacity of the battery, and improving the performance and lifetime of the battery.

The invention relates to a high-performance and long-service-life space equipment precise conductive slip ring and a preparing method thereof. The conductive slip ring is composed of a single metal base body and a conductive abrasion resisting, corrosion preventing and self-lubricating integrated coating. The surface coating is formed in the manner that Cu-TiO2 composite powder of a core-shell structure is directly subjected to plasma spraying to a slip ring base body. The coating comprises components including, by mass percent, 62%-75% of Ti4O7, 12%-20% of Cu, 10%-15% of TixO2x-1 and 3%-10% of TiO2, wherein x is larger than or equal to 5 and smaller than or equal to 10. The surface multifunctional composite coating serves as a work layer of the conductive slip ring, good abrasion resistance of the composite coating is utilized, the metal base body of the conductive slip ring is protected, accordingly, the service life of the conductive slip ring is greatly prolonged, and long-time stable work reliability is improved. Meanwhile, the proportion of Ti4O7 in the composite coating is small, lightweight of the conductive slip ring is facilitated, the specific energy is improved, and good application prospects are achieved.