13results about How to "Increased ion mobility" patented technology

The invention provides a preparation method of a lithium iron phosphate material, a lithium ion battery and electric equipment, and relates to the technical field of batteries. The method comprises the following steps: mixing raw materials of an iron source, a lithium source and a phosphorus source with a reagent serving as a reducing agent and a carbon source, and grinding to obtain precursor powder; wherein the molar ratio of the lithium source to the iron source is 1.03-1.05, and the molar ratio of the iron source to the phosphorus source is 0.965-0.99; carrying out high-temperature treatment on the precursor powder in an inert atmosphere to obtain a lithium iron phosphate base material; and crushing the lithium iron phosphate base material to obtain the lithium iron phosphate material meeting the particle size requirement. The high-capacity and high-compaction lithium iron phosphate material is obtained by accurately controlling key indexes such as the iron-phosphorus ratio, the carbon content, the graphitization degree and the particle size and combining an optimized processing technology, so that the fast charging performance of a lithium ion battery is improved, and the effect of not reducing the electric quantity while the fast charging requirement is met is achieved.

The invention relates to a perovskite solar cell and a preparation method thereof, and belongs to the technical field of solar cells. The perovskite solar cell comprises a conductive substrate, a hole transport layer, a passivation layer, a perovskite layer, an electron transport layer and a metal electrode which are arranged in sequence, the material of the passivation layer is selected from one or more of mercaptoethylamine, ethylenediamine and propylamine; and the thickness of the passivation layer is 1 nm to 10 nm. Through the introduction of interface passivator molecules, the interface between the hole transport layer and the perovskite layer is improved. The surface wettability of the PTAA thin film is enhanced, so that the perovskite precursor solution can form a uniform and compact perovskite layer on the PTAA / SCAs thin film, the carrier separation and transmission efficiency at an interface is improved, and the stability of a device is enhanced.

The invention belongs to the field of batteries, and particularly relates to a lithium ion battery electrolyte and application thereof. The lithium ion battery electrolyte provided by the invention comprises the following components: an organic solvent, a lithium salt and an additive, the additive comprises a compound with a structure as shown in a formula I and / or a compound with a structure as shown in a formula II. The electrolyte provided by the invention can be used for optimizing SEI membrane components of the lithium ion battery, improving the cycle coulombic efficiency of the lithium ion battery, improving the high-voltage tolerance of an SEI membrane and improving the high-temperature and high-voltage cycle performance of the lithium ion battery. # imgabs0 #

The invention provides a preparation method of a grinding aid for Sc / O doped sulfide solid electrolyte, which comprises the following steps: mixing and reacting ethanolamine thioglycolate, 2-vinyl-5, 5-dimethyl-1, 3, 2-borane dioxide, 1-allyl-3-ethylimidazolium hexafluorophosphate and potassium ethoxide in a solvent, reacting the ethanolamine thioglycolate with the 2-vinyl-5, 5-dimethyl-1, 3, 2-dioxo-borane, and reacting with the potassium ethoxide to obtain the grinding aid for Sc / O doped sulfide solid electrolyte. The grinding aid for the Sc / O doped sulfide solid electrolyte is prepared by the following steps: carrying out sulfydryl-alkenyl addition reaction on ethanol amine thioglycolate and 1, 2-borane dioxide, carrying out sulfydryl-alkenyl addition reaction on ethanol amine thioglycolate and 1-allyl-3-ethylimidazolium hexafluorophosphate, and removing a solvent after the reaction is finished, so as to obtain the grinding aid for the Sc / O doped sulfide solid electrolyte. The grinding aid can improve the microstructure of the electrolyte material, thereby enhancing the conductivity and safety of the electrolyte material.

The application discloses a kind of high adhesion hydrogel for electroencephalogram test and its preparation method and application, belong to biomedical engineering technical field.The hydrogel includes the following components crosslinked product: anionic monomer, cationic monomer, monomer and mutual penetration agent;The anionic monomer is any one of malic acid, gluconic acid, citric acid and lactic acid, cationic monomer is betaine or acetyl L-carnitine, monomer is N, N-dimethyl acrylamide, acrylic acid, sodium acrylate, 4-acryloyl morpholine or sodium acrylamidomethyl propane sulfonate, mutual penetration agent is sodium chloride aqueous solution or sodium chloride water-retaining agent solution.Preparation, cationic monomer is mixed and dissolved, vacuum drying, adding photo initiator mixing, then mutual penetration agent is added, and it is obtained by ultraviolet light crosslinking.The hydrogel of the application has high adhesion (adhesion strength reaches 203.22 kPa), high ion mobility and excellent biocompatibility, and the signal gain in EEG and ECG test reaches 2-3 times of traditional conductive paste, which can be widely used in medical conductive paste field.

The invention relates to a polymer electrolyte hybrid dielectric film material based on inorganic chloride doping and a preparation method and application thereof, and belongs to the technical field of dielectric film materials and devices. The polymer electrolyte hybrid dielectric film material based on inorganic chloride doping has significantly enhanced capacitance and ion migration capability, and can be used for developing an organic transistor memory with multi-level response to different pulse voltages, and the device can realize a wide memory window of 0.548 V under a low working voltage of-1.5 V. The memory also shows good static and dynamic storage characteristics, and accurate regulation and identification of memory windows with different sizes can be realized by programming grid pulse voltage. The novel polymer electrolyte hybrid dielectric film material and the organic transistor memory with the multilevel storage characteristic have the advantages of simple structure, excellent performance, easiness in large-scale manufacturing and the like, and have good popularization and application prospects in the technical fields of low-power consumption optoelectronic devices and storage.

The invention discloses a perovskite-based solid electrolyte with a stable positive electrode interface, an application of the perovskite-based solid electrolyte and a lithium battery, the solid electrolyte comprises polyethylene oxide, a lithium salt, nano titanium dioxide particles and nano perovskite quantum dots, the nano titanium dioxide particles are used for modifying the polyethylene oxide, and the nano perovskite quantum dots are used for modifying the lithium salt. The dosage of the nano titanium dioxide particles is 0.3%-0.7% of the dosage of the polyethylene oxide. Nano titanium dioxide particles and nano perovskite quantum dots are uniformly dispersed in a polyethylene oxide matrix, and the proportion of a crystalline region in a polyethylene oxide system is effectively reduced by utilizing the Lewis acid-base action and the size effect of superfine nano particles, so that the movement of a polyethylene oxide polymer chain segment is promoted. The titanium dioxide particles and the perovskite quantum dots are nano-sized, so that the nano perovskite quantum dots have a synergistic effect on inhibiting the growth of lithium dendrites in the battery circulation process.

The invention relates to the field of lithium batteries, in particular to a preparation method for improving charge-discharge efficiency and cycle performance of a silicon-oxygen negative electrode material. Comprising the following steps: 1, adding a SiOx material into pure water, adding a polymethyl methacrylate emulsion and a conductive polymer material, uniformly stirring, transferring into a reaction kettle, carrying out thermal reaction, filtering, and drying to obtain a modified SiOx material; 2, preparing a silicon-oxygen negative electrode material from the modified SiOx material; the silicon-oxygen negative electrode material is obtained; and the charge-discharge efficiency, the cycle performance and other electrical properties are effectively improved.

The application belongs to the technical field of chemical detection, and discloses a copper ion detection liquid, a method, a device, computer equipment and a storage medium.The copper ion detection liquid comprises: dilution special pure water, potassium chloride and isopropyl alcohol; and the parameters of the dilution special pure water are: conductivity < 10 mu s / cm, solid suspended substance < 5.0 mg / L and pH is 4.5-5.5.The application provides more suitable acidity, total ion strength and ion background for EDTA titration analysis of copper ion concentration by using dilution special pure water, potassium chloride and isopropyl alcohol, so that the stability and accuracy of copper ion detection can be improved.

Embodiments of the present invention include batteries and other charge storage devices incorporating sheets and / or powders of silica fibers and methods for producing such devices. The silica fibers can be formed by electrospinning a sol-gel produced with a silane oxide reagent such as tetraethyl orthosilicate, an alcohol solvent, and an acid catalyst.

A Ti 3 C 2 T x / ZnPc composite gas-sensitive material and its preparation method and application in ammonia detection. The composite gas-sensitive material is composed of multilayer Ti 3 C 2 T x As the substrate, nanostructured ZnPc is doped between the layers of multilayer Ti3C2Tx. 3 C 2 T x The mixture is added to ethanol and ultrasonically treated to obtain an intermediate solution; the ultrasonically treated intermediate solution is magnetically stirred at 35 to 45° C., filtered to obtain a composite material; and the composite material is vacuum dried at 75 to 85° C. for 10 to 14 hours to obtain the Ti 3 C 2 T x / ZnPc composite gas-sensitive material. The solution of the present invention can solve the technical problem of low sensitivity of the gas sensor when detecting ammonia.

The application discloses a kind of tungsten selenide-WN Schottky junction loaded carbon material conductive agent and its preparation method and sulfide full solid battery application.Preparation method includes steps: (1) in the condition that emulsifier and co-emulsifier exist, with dopamine hydrochloride as polymerization monomer, first reaction is carried out in first solvent, and dopamine microspheres are obtained;(2) dopamine microspheres and urea, tungsten precursor are reacted in second solvent to obtain polymer precursor;(3) under inert atmosphere, the third reaction is carried out to polymer precursor and selenium powder, and WSe2-WN Schottky junction loaded carbon material conductive agent is obtained.

The invention provides a preparation method of a germanium triphosphide nanosheet, and belongs to the technical field of electrode material preparation. The preparation method comprises the following steps: step 1), pre-pressing mixed powder formed by red phosphorus powder and germanium powder to obtain a pre-pressed body; (2) carrying out high-temperature and high-pressure sintering on the pre-pressed body prepared in the step (1) to obtain bulk-phase germanium triphosphide; (3) taking the bulk-phase germanium triphosphide prepared in the step (2) as an electrode, and putting the bulk-phase germanium triphosphide into an electrolytic tank; 4) applying voltage or current to the electrode in the step 3) to perform intercalation dissociation on the germanium triphosphide; and (5) centrifuging the electrolyte subjected to electrochemical dissociation in the step (4), and collecting supernate to obtain the germanium triphosphide nanosheet. A large number of high-purity micron-sized germanium triphosphide nanosheets are prepared by combining a high-temperature and high-pressure technology with an electrochemical dissociation technology.