32results about How to "Increase capacity value" patented technology

The invention discloses a method for synthesizing a nanometer Ni2O3 / Co3O4 cathode material on a copper sheet current collector through a two-step method. According to the method, a nanowire array directly grows on the current current collector matrix, so that the process treatment is greatly simplified, and an adhesive and a conductive additive are not used in the electrode. The method comprises the following steps: electroplating a nano-scale granular nickel layer on a copper matrix subjected to acid treatment to serve as a seed, generating a nano array through a hydrothermal reaction, and preparing a final product through high-temperature calcining. The proper nickel electroplating time is selected, the combination degree between the substrate and the material is improved, and the nickel is hard to drop, so that the cycling stability of the lithium ion battery is improved. Meanwhile, compared with a nickel plating-free pure Co3O4 array, the Ni2O3 / Co3O4 array has the advantages that the capacity value of unit area is improved. When the electrochemical performance is tested, the prepared cathode material reflects high charging and discharging capacity and long cycle life.

A method for determining the capacity that is needed on an lub link to fulfill Grade of Service (GoS) requirements in a Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN) for both Dedicated Channel (DCH) traffic and High-Speed Downlink Packet Access (HSDPA) traffic. The method includes determining the bandwidth demand of the HSDPA traffic (ElasticDim); calculating an average bandwidth of the DCH traffic on the lub interface (BW use,avg); setting an initial capacity (Capacity) to the capacity need of the DCH traffic (Capacity DCH), wherein at least the initial capacity will be provided for the DCH traffic in the dimensioned system; and, increasing the value of Capacity until a quality requirement of the HSDPA traffic is fulfilled, the maximum value of Capacity reached being the capacity that is needed for DCH and HSDPA traffic for the lub interface.

The invention is to provide such an antenna module making broadband of transmitting and receiving frequencies, while realizing miniaturization. The invention has a structure comprising a mounting body; a chip antenna having a substrate mounted on the mounting body and a substrate and a couple of terminal parts provided on the substrate; an feeding portion to which one of the terminal parts provided on the mounting body is connected; a open portion to which the other of the terminal parts provided on the mounting body is connected; and a capacitive conductor provided in opposition to the substrate, thereby to make use of a bottom area hidden when mounting the chip antenna so as to increase capacitive components for realizing broadband of the antenna module.

The present invention pertains to an aqueous composition comprising: (A) an aqueous latex comprising at least one vinylidene fluoride (VDF) polymer [polymer (F)] comprising recurring units derived from vinylidene fluoride (VDF) and at least one (meth)acrylic monomer (MA) having formula (I) here below: wherein: —R1, R2 and R3, equal to or different from each other, are independently selected from a hydrogen atom and a C1-C3 hydrocarbon group, and —ROH is a hydrogen atom or a C1-C5 hydrocarbon moiety comprising at least one hydroxyl group, (B) at least one powdery electrode material, and (C) optionally, less than 10% by weight, based on the total weight of the aqueous composition, of at least one organic solvent (S), wherein the polymer (F) in the N aqueous latex is under the form of primary particles having an average primary particle size of less than 1 μm, as measured according to ISO 13321. The present invention also pertains to a process for manufacturing an electrode using said aqueous composition, to an electrode comprising a metal substrate coated on at least one surface with said aqueous composition and to use of said electrode for manufacturing a non-aqueous-type electrochemical device.

The present invention pertains to a process for manufacturing a film, said process comprising: (i) providing a composition [composition (C)] comprising, preferably consisting of: - at least one fluoropolymer [polymer (F)] comprising recurring units derived from at least one fluorinated monomer comprising a -SO 3 M functional group, wherein M is an alkaline metal [monomer (FM)] and - a liquid medium [medium (L)] comprising at least 50% by weight, based on the total weight of said medium (L), of at least one alkyl carbonate; (ii) processing the composition (C) provided in step (i) into a film; and (iii) drying the film provided in step (ii). The present invention further pertains to use of said film in a process for manufacturing a lithium electrode and to use of said lithium electrode in a process for manufacturing a lithium-sulphur battery.

The present invention pertains to an aqueous composition comprising: (A) an aqueous latex comprising at least one vinylidene fluoride (VDF) polymer [polymer (F)] comprising recurring units derived from vinylidene fluoride (VDF) and at least one (meth)acrylic monomer (MA) having formula (I) here below: wherein: —R1, R2 and R3, equal to or different from each other, are independently selected from a hydrogen atom and a C1-C3 hydrocarbon group, and —ROH is a hydrogen atom or a C1-C5 hydrocarbon moiety comprising at least one hydroxyl group, (B) at least one powdery electrode material, and (C) optionally, less than 10% by weight, based on the total weight of the aqueous composition, of at least one organic solvent (S), wherein the polymer (F) in the aqueous latex is under the form of primary particles having an average primary particle size of less than 1 μm, as measured according to ISO 13321. The present invention also pertains to a process for manufacturing an electrode using said aqueous composition, to an electrode comprising a metal substrate coated on at least one surface with said aqueous composition and to use of said electrode for manufacturing a non-aqueous-type electrochemical device.

The invention discloses a data transmission system and method. The method is applied to a mobile terminal and an external device connected to the mobile terminal through USB. The mobile terminal includes a first modem connected to a physical subscriber identification card and an embedded subscriber identification card, a second A temporary buffer and the first application processor, the external device includes the second application processor, the second temporary buffer and the second modem; the second application processor obtains the data packet to be transmitted according to the detected data transmission instruction, and the The data packets to be transmitted are cached in the second temporary buffer for the first application processor to obtain the data packets to be transmitted from the first temporary buffer; the capacity values ​​of the first temporary buffer and the second temporary buffer are equal to the default capacity values and the increased value, and the sum of the default capacity value and the increased value is greater than or equal to the size of the data packet to be transmitted. The invention solves the problem that the mobile terminal and the external device are prone to crash during the process of transmitting telecommunication card data.

The invention discloses a data transmission system and method. The method is applied to a mobile terminal and an external device connected with the mobile terminal through a USB. The mobile terminal comprises a first modem connected with a first subscriber identity module card and a second subscriber identity module card, a first temporary buffer and a first application processor. The external device comprises a second application processor, a second temporary buffer and a second modem. The second application processor acquires a to-be-transmitted data package according to a detected data transmission instruction, and caches the to-be-transmitted data package in the second temporary buffer so as to enable the first application processor to acquire the to-be-transmitted data package from the first temporary buffer, wherein capacities of the first temporary buffer and the second temporary buffer are equal to a sum of a default capacity and an increase value, and a sum of the default capacity and the increase value is greater than or equal to the size of the to-be-transmitted data package. When the mobile terminal and the external device transmit telecommunication card data, the mobile terminal is easy to crash. The data transmission system and method solves the above problem.

The invention discloses a preparation method of a lithium iron phosphate / carbon nanotube microsphere positive electrode material, the positive electrode material and an optimization method of an aqueous lithium ion capacitor, and relates to the field of electrochemical energy storage, and the specific scheme is as follows: preparing carbon nanotube microspheres and a lithium iron phosphate precursor solution; carrying out negative-pressure vacuum infiltration on the carbon nanotube microspheres and a lithium iron phosphate precursor solution to obtain a precursor, carrying out drying and high-temperature carbonization treatment to obtain the lithium iron phosphate / carbon nanotube microsphere positive electrode material, and applying the lithium iron phosphate / carbon nanotube microsphere positive electrode material to an optimized aqueous lithium ion capacitor. The preparation method provided by the invention has the advantages of sufficient and cheap selected raw materials, environmental friendliness, high capacity value and stable crystal structure, the experiment cost is reduced, and the product does not pollute the environment. The obtained positive electrode material has a highspecific capacitance value. After the material is used for optimizing the capacitor, the obtained capacitor is good in rate capability and long in cycle life, and the comprehensive electrochemical performance of the capacitor is integrally improved.

The invention belongs to the field of new energy automobile storage batteries, and specifically relates to a simple maintenance method for fast charging capacity nickel-metal hydride batteries in lineoperation vehicles. The method comprises the following steps of testing the internal resistance of single batteries in turn, eliminating failed batteries with the internal resistance higher than 200%of the average internal resistance of this type of new batteries; replenishing water to single capacitor batteries in turn taking a battery box as an operation unit, determining replenishing volume according to the internal resistance, sealing; replacing the eliminated failed batteries with standby capacitive nickel-metal hydride batteries matched with the internal resistance of the whole vehicle. The method introduces an internal resistance index to replace the traditional voltage index, so that abnormal batteries or failed batteries are easier to be judged; the cost is low, and the method can directly determine the water replenishment volume for the fast-charging nickel-metal hydride batteries according to the internal resistance, compared with sealed batteries needed for conventional weighing and water replenishment, and the operation saves time and labor; the maintenance effect is obvious. The internal resistance of the capacitive nickel-metal hydride batteries treated by the method provided by the invention is reduced by 10%-60% compared with that before the treatment; the capacity value is increased by 5%-30%.

The invention discloses a mobile terminal and a data transmission method thereof. In the mobile terminal, a first processing chip comprises a first temporary buffer and a first modulator-demodulator; a second processing chip comprises a second temporary buffer and a second modulator-demodulator; the first modulator-demodulator is connected with the second modulator-demodulator by a UART (Universal Asynchronous Receiver / Transmitter); capacity values of the first temporary buffer and the second temporary buffer are synchronously changed; the second modulator-demodulator caches an acquired to-be-transmitted data packet into the second temporary buffer for the first modulator-demodulator to acquire the to-be-transmitted data packet from the first temporary buffer; the capacity values of the first temporary buffer and the second temporary buffer are equal to the sum of a default capacity value and an increment value; and the sum of the default capacity value and the increment value is greater than or equal to a size of the to-be-transmitted data packet. The invention solves the problem that in the process that the mobile terminal implements double LTE (Long Term Evolution) communication, when telecom card data is transmitted between two processing chips, the mobile terminal is easy to crash.

The invention discloses a preparation method of a lithium iron phosphate / carbon nanotube microsphere positive electrode material, a positive electrode material and an optimization method of a water-based lithium ion capacitor, and relates to the field of electrochemical energy storage. The specific scheme is: preparing carbon nanotube microspheres and Lithium iron phosphate precursor solution; carry out negative pressure vacuum infiltration of carbon nanotube microspheres and lithium iron phosphate precursor solution to obtain the precursor, after drying and high temperature carbonization treatment, obtain lithium iron phosphate / carbon nanotube microsphere positive electrode material, and It is applied to optimize aqueous lithium-ion capacitors. The preparation method provided by the invention has sufficient and cheap raw materials, is environmentally friendly, has a high capacity value, and has a stable crystal structure, reduces experiment costs, and the product has no pollution to the environment. The resulting positive electrode material has a high specific capacitance value. After the material is used to optimize the capacitor, the obtained capacitor has good rate characteristics and good cycle life, and the comprehensive electrochemical performance of the capacitor has been improved as a whole.

The invention discloses a high-voltage lithium nickel manganese oxide / graphite lithium ion battery and a manufacturing method thereof, and proposes modifying the surface of the negative electrode with an organic acid ester to change the components of the SEI film and strengthen the stability of the interface between the electrolyte and the electrode. So as to effectively curb the rapid decline of capacity. In the present invention, by optimizing the electrolyte, adding functional additives to the traditional organic electrolyte, the initial efficiency of the battery is improved, the self-discharge of the battery is suppressed, the specific capacity of the battery is increased, and a battery with a high specific capacity and a long cycle is realized. In order to further stabilize the efficient operation of the LNMO / graphite lithium-ion battery with high specific capacity and long cycle life, and further improve the stability of the battery, the present invention also proposes to modify the positive electrode. The LNMO@LTO cathode material is prepared by coating LNMO with Li4Ti5O12. The coating layer can effectively avoid the direct contact between the electrolyte and the active material body, reduce the overflow of Mn from the cathode material, and reduce the further catalytic effect of Mn on the SEI film, making the system more stable.

The invention relates to a tungsten carbide-embedded carbon nanofiber composite membrane and a preparation and an application thereof. The composite membrane is of a three-dimensional porous structure; an ammonium tetrathiotungstate / polyacrylonitrile nanofiber membrane is prepared through electrostatic spinning; and the tungsten carbide / carbon nanofiber composite membrane is prepared through one-step high-temperature carbonization reduction in an argon-hydrogen atmosphere. The tungsten carbide-embedded carbon nanofiber composite membrane is applied as an electrode material of a lithium-ion battery and a super capacitor. The prepared tungsten carbide / carbon nanofiber composite material has excellent conductivity and electrochemical activity.