30results about How to "Solve gas production" patented technology

The invention discloses a ternary single crystal positive electrode material and its preparation method and application. The preparation method comprises the following steps: mixing ternary polycrystalline micropowder, raising the temperature, performing the first sintering, and lowering the temperature to obtain an intermediate; Carry out jet crushing of the body to obtain a single crystal material, wash with water, centrifuge, and dry to obtain a material with a residual alkali content of less than 1500ppm; add the coating agent to the material, heat up, perform a second sintering, and cool down to obtain a ternary single crystal Cathode material. The invention utilizes airflow pulverization equipment to break polycrystalline materials into small single crystal particles, thereby improving the electrochemical performance of the materials and increasing the energy density of the materials.

The invention relates to the field of battery technology, and discloses a high-temperature non-expanding high-energy-density silicon-carbon battery. The electrolyte solvent includes: EC 20-30%, EMC 55-65%, DMC 5-15%, FEC 3-5% ; Additives include methylene disulfonate, tri(trimethyl) silane borate and vinylene carbonate; silicon carbon battery formation process: 0.01C, 0.02C, 0.05C charging for 28-32min respectively; 0.1C After charging to 3.37V, let it stand for 4-6 hours, and take time to remove the gas; charge to 4.3V at 0.1C, and then perform a capacity division after three days. First, discharge at 0.1C, and then perform two 0.5C charge and discharge capacity calibrations. 4.3V is fully charged; after the first capacity division, the battery is aged, then evacuated, placed at room temperature, and then charged and discharged at 0.5C for a second capacity division. The invention can prevent silicon carbon battery from gas generation and expansion at high temperature.

The invention belongs to the field of energy storage research and particularly relates to a lithium titanate negative electrode material. The lithium titanate negative electrode material comprises a core structure and a shell structure, and the core structure is a secondary particle structure and comprises a main conductive network with a porous structure and nano primary particles filled in the porous main conductive network structure. The main conductive network is structurally high in chemical bond force, and the nano primary particles are closely locked in the porous structure of the main conductive network through chemical bonds, so that excellent electrochemical performances of the lithium titanate negative electrode material are guaranteed.

The invention belongs to the technical field of rubber, and mainly relates to a nitrile rubber used for an ultra-high voltage large oil-immersed transformer. The components and relative contents of the nitrile rubber are calculated by mass as follows: nitrile rubber NBR? 100 parts, 0.1-20 parts of stearic acid, 10-80 parts of carbon black, 10-80 parts of spray carbon black, 1-30 parts of zinc oxide, vulcanizing agent DTDM? 0.1-20 parts, vulcanizing agent TETD? 0.1-20, vulcanizing agent TMTD? 0.1-20, Accelerator CZ? 0.1-20 parts, anti-aging agent RD? 0-20 parts, antioxidant MB? 0.1-20 parts, anti-aging agent 4010? 0.1-20 parts, 1-20 parts of paraffin, 1-30 parts of coumarone, 5-50 parts of capryl decane. The nitrile rubber described in the invention has further improved compatibility with transformer oil, solves the problem of rubber gas production in the transformer, and ensures the stability and safety of the operation of the UHV large oil-immersed transformer.

The invention provides a lithium titanate composite material and a preparation method and application thereof. The lithium titanate composite material comprises lithium titanate particles and lithium phosphate glass coated on the surface of the lithium titanate particles. The preparation method comprises the following steps of: uniformly mixing the lithium titanate particles and the mixture of a lithium source and a phosphorus source in a liquid system solvent to obtain uniformly-mixed liquid; performing ball milling on the uniformly-mixed liquid to form slurry; taking out the slurry and drying to obtain the precursor powder of the composite material; calcining the precursor powder of the composite material; and cooling and breaking to obtain the lithium titanate composite material of which the lithium phosphate glass is coated by the lithium titanate on the surface. The lithium titanate composite material is used as an active substance of a lithium ion battery or an electrode material of a capacitor. The lithium titanate composite material can suppress expansion of a lithium ion battery when applied to the lithium ion battery, improves the high-temperature storage and cycle performance of the lithium ion battery, increases the diffusion coefficient of lithium ions in the active substance, and is favorable for improving the rate capability of lithium titanate.

The invention relates to the technical field of energy storage device production, in particular to a battery cell gas producing detection device and a detection method. The battery cell gas producing detection device comprises a gas carrying bottle, a vacuum mechanism, test equipment, a first pipeline and a second pipeline, wherein the two ends of the first pipeline respectively communicate with the gas carrying bottle and the test equipment; the first pipeline is provided with a first communication position; one end of the second pipeline is used for communicating with a first liquid injection hole of a battery cell; the other end of the second pipeline communicates with the first pipeline in the first communication position; the vacuum mechanism is used for performing vacuum pumping on the first pipeline and the second pipeline. The device and the method provided by the invention have the advantages that ingredients of produced gas can be accurately detected; further, a gas producing analysis result and real-time real degree can be improved, so that the gas produced by a lithium ion battery can be studied; the practical gas production problem of the lithium ion battery is solved; the service life of ten years of the battery cells is ensured.

Preparation method of graphene low temperature battery. The invention is used for the battery of lithium titanate negative electrode system. Existing rechargeable batteries can only reach 50‑70% of the total battery capacity when charged in a low temperature environment. The invention includes: preparing the slurry required for coating the positive electrode sheet of the battery through the positive electrode of lithium manganate, a binder and a conductive agent; preparing the slurry required for coating the negative electrode sheet of the battery through the conductive agent containing conductive graphene slurry Homogenization of materials; coating of battery positive and negative electrodes, and leaving empty foils on both sides of the positive and negative electrodes; rolling and shearing of battery positive and negative electrodes; battery assembly; battery formation and post-treatment process. The invention has the advantages of being able to charge to 90% of the total battery capacity in six minutes under the environment of minus 40 degrees, and also has the advantages of ultra-high cycle performance and low internal resistance.

The invention belongs to the field of pharmacy, and particularly relates to a gynecological inflammation clearing vaginal effervescent tablet. The tablet is prepared from the following Chinese medicinal bulk pharmaceutical chemicals: 500g of sophora flavescens, 400g of quassia, 400g of common cnidium fruit, 100g of dried alum, 5g of pearl stratum powder, 10g of borneol, 4g of menthol, 40g of berberine hydrochloride and 60g of boric acid. The gynecological inflammation clearing vaginal effervescent tablet contains auxiliary components which comprise acid, alkali, a filler, a disintegrating agent, a lubricant and a coating agent.

The invention discloses a surface-modified nickel-based electrode material, which comprises a nickel-based material precursor, lithium acetate and a modification substance, wherein the modification substance is an oxygen ion conductor material; the oxygen ion conductor material is yttrium oxide stabilized bismuth oxide, Any one of dysprosium oxide stabilized zirconia or samarium oxide stabilized tin oxide or a combination of the two; the quality of the oxygen ion conductor material accounts for 0.01-5% of the total electrode material; nickel, The mass ratio of cobalt and manganese is 0.6~0.9:0.05~0.2:0.05~0.2. In the present invention, the nickel-based electrode material can suppress Li after being modified by the oxygen ion conductor + / Ni 2+ The disorder of the material improves the initial Coulombic efficiency of the material, and at the same time, the synergistic effect of the vacancies of lithium and nickel in the delithiation process aggravates the instability of oxygen, while the oxygen ion conductor just provides oxygen ions in the process of modifying nickel-based materials. vacancies, thereby improving the structural stability of the material.

The invention discloses a flexible water-based zinc-ion battery, which includes a positive electrode layer, a negative electrode layer, a current-collecting layer, a diaphragm and an aqueous electrolyte. The current-collecting layer includes a gas-permeable layer and a base layer, and the base layer has at least one opening. The open-pore structure of the air-permeable layer and the base layer solves the problem of gas production and electrolyte drying during the battery cycle, making the gaseous water inside and outside the battery reach a state of cyclic exchange and dynamic equilibrium, which greatly improves the cycle performance of the battery. Moreover, the assembled flexible aqueous zinc-ion battery has the advantages of light weight, thin thickness, low cost, green environmental protection, high safety, good rate performance and high power density, and its excellent bending performance and flexibility can also meet bending at different angles. It is suitable for large-scale application and industrial production in the field of wearable electronic devices.

The invention relates to a culture method of mixed bacteria, in particular to a culture method for EM. The simple culture method for EM comprises the following steps: A, preparing culture solution, and filling into a plastic square barrel with a ventilating cover; B, inoculating bacillus; C, culturing under a closed condition for 24 hours; D, inoculating composite lactic acid bacteria, saccharomycetes and photosynthetic bacteria; and E, culturing under a closed condition. In the invention, a cheap plastic square barrel which is common on market is used as an EM culture container; generally, culture can be performed at normal temperature; culture and use on site can be realize; and the method has the advantages of environment protection, flexible production operation, production and use cost conservation and the like.

The invention belongs to the field of energy storage study, and particularly relates to a lithium titanate negative electrode material and a preparation method thereof. The lithium titanate negative electrode material comprises a core structure and a shell structure, wherein the shell structure uniformly coats the surface of the core structure; the thickness of the shell structure is h, and the h is smaller than or equal to 100nm. The preparation method of the lithium titanate negative electrode material comprises the following steps that 1, cladding layer slurry containing graphene is prepared; the slurry is sprayed into a cladding chamber; formed particles have electric charges, and the carried charge of each particle is Q1; 2, the core structure ingredients are sprayed into the cladding chamber, so that the surface of the core structure ingredients has the electric charges opposite to those of the particles in the step 1, and the carried charge of each particle is Q2; 3, cladding reaction is performed: the airflow in the cladding chamber is regulated, so that the particles in the step 1 uniformly coat the surface of the core structure in the step 2; 4, aftertreatment is performed to obtain a finished product of lithium titanate particles, so that the lithium titanate negative electrode material with excellent performance is prepared.

The invention discloses a method for preparing low cooking salt sauce, which comprises the following steps: 1) preparing a sauce yeast according to the conventional sauce yeast preparation method; 2) mixing 15 to 20 Be of salt water with the sauce yeast according to the weight ratio of 1:1-1:1.5 to obtain a soy sauce mash, and then performing normal temperature fermentation; 3) using fruits of gramineous plants as a raw material which is added with water to perform enzyme process liquefaction and is then mixed with a saccharification liquid and an amino acid polypeptide nutrient solution which are prepared through saccharification so as to prepare a liquid medium, and fermenting the yeast in the liquid medium to obtain a sauce composite fermentation broth; and 4) mixing the sauce composite fermentation broth with the soy sauce mash in the step 2) to perform low cooking salt liquid state fermentation at normal temperature, separation, heating, deposition, filtration and blending after the maturation of the fermentation so as to obtain the low cooking salt sauce. The method can obtain the low cooking salt sauce through fermentation directly at normal temperature, and can inhibit pollutions caused by other bacteria in the process of soy sauce mash fermentation so as to obtain the low cooking salt sauce with full aroma and delicious mouthfeel.