1585results about How to "Improve storage effect" patented technology

The invention discloses a lithium-ion power battery electrolyte for a high / low temperature environment. The electrolyte comprises a lithium salt, an organic solvent and a negative electrode film forming additive. The lithium salt is a mixture of lithium hexafluorophosphate and lithium dis(trifluoromethanesulfonyl)imide or a mixture of lithium hexafluorophosphate and lithium difluoro(oxalato)borate. The organic solvent is a mixture of a carbonic ester solvent and a carboxylate solvent and a volume ratio of the carbonic ester solvent to the carboxylate solvent is 7-9: 1-3. Through modification of the lithium salt, the organic solvent and the film forming additive, charging-discharging, cycle and storage performances of the lithium-ion battery under condition of high / low temperature are obtained, and the problem that the existing lithium-ion power battery electrolyte has a low charging-discharging capacity, a short cycle life and poor storage performances in a high / low temperature environment is solved.

The invention discloses a sodium super ionic conductor-inlaid and coated positive electrode material for a sodium-ion battery and a synthesis method of the positive electrode material. A sodium residue on the surface of the positive electrode material for the sodium-ion battery is taken as a raw material, and the sodium super ionic conductor-inlaid and coated positive electrode material is synthesized in situ through a solvothermal (hydrothermal)-heat treatment technology, wherein the positive electrode material for the sodium-ion battery is NaxMO2 (x is smaller than or equal to 1 and greater than or equal to 0.67, and M is one or more of transition metals of Ni, Co, Mn, Al, Cr, Fe, Mg, V, Zn, Cu and the like); and a super ionic conductor is NayM2(X)3 (y is smaller than 1.5 and greater than 0.3, M is the metal and X is one of polyanions SiO4<4->, PO4<3->, SO4<2->, MoO4<2-> and the like). The sodium residue on the NaxMO2 interface is directly taken as the raw material of the sodium super ionic conductor, so that the positive electrode material disclosed by the invention has the characteristics of in-situ growth and simplicity in process, the storage property of the obtained positive electrode material for the sodium-ion battery is obviously improved, and the positive electrode material is excellent in electrochemical properties and can be used for a power battery and an energy storage battery.

The invention provides a fiber base multilayer structure friction nanometer power generator and a preparation method thereof. The fiber base multilayer structure friction nanometer power generator ischaracterized in that the power generator comprises an electropositive friction layer and a multilayer structure electronegative friction layer; the electropositive friction layer and the multilayer structure electronegative friction layer are static spinned nanofiber films; the multilayer structure electronegative friction layer comprises an electric storage layer, a conductive layer and a friction contact layer, wherein the electric storage layer, the conductive layer and the friction contact layer are successively arranged from bottom to top; and the electropositive friction layer and the electronegative friction layer can contact with each other or be separated from each other for generating electric charges. The prepared multilayer structure friction nanometer power generator has advantages of increasing shortcircuit current by 40-150%, boosting open-circuit voltage by 100-250%, and increasing electric quantity by 40-100%. The friction nanometer power generator according to the invention has advantages of high surface charge density, low volume mass, simple structure and short process flow. The fiber base multilayer structure friction nanometer power generator can efficientlycollect mechanical energy generation in human body movement and has wide application range in the field of microelectronics.

The invention provides a preparation method of an autodoped modified high-conductivity TiO2 nanotube array, which comprises the following steps: growing TiO2 nanotubes on a titanium sheet in a fluorine-containing electrolyte by using a two-electrode system, and calcining at 400-700 DEG C in an air atmosphere; and polarizing the calcined TiO2 nanotube array under constant negative potential in an inert electrolyte for some time to obtain the autodoped (Ti<3+>-doped) modified high-conductivity TiO2 nanotube array. The invention is simple in technique, can easily control the doping amount, and can greatly enhance the conductivity of the TiO2 nanotubes, so that the prepared autodoped modified TiO2 nanotube array not only can be used in the fields of environmental treatment, photoelectric conversion, catalytic hydrogen production and the like, but also can be used in the fields of super capacitors, lithium ion batteries and other energy storage devices.

The invention provides a multifunctional computer case, and relates to the technical fields of computer components. The multifunctional computer case comprises a base, wherein the base comprises two clamping seats and a force bearing seat which is integrated between the two clamping seats; a motor seat is fixedly mounted at one side of the inner wall of each clamping seat; and motor is fixedly mounted at one side of each motor seat. According to the multifunctional computer case, through the cooperation of a case body, a water cooling device, a water cooling shell, a water cooling block, a water cooling groove, a micro pump, a water cooling pipe, a ventilation grating, a fan, a protection net and an air outlet net plate, the water cooling block in the water cooling device can cool liquid water; through extraction of the micro pump, the cooled water is conveyed to a high-heat area which is easy to emit heat in the case body and forms thermos-cycling in the case body; when air blown by the fan passes through the water cooling pipe, the temperature falls again; and in conclusion, the computer case is good in cooling effect and more fluent in operation.

The invention discloses a formation method and a preparation method of a high-voltage lithium ion battery as well as a battery. The formation method comprises steps as follows: (1), the battery is charged at constant current of 0.015C-0.05 C at limit voltage of 0.15 V-0.5 V and put aside for 10min-3h; (2), the battery is charged at constant current I2 of 0.05C-0.15 C at the limit voltage of 0.1V-0.4V, then charged at the constant voltage higher than mean voltage by 0.1V-0.4V at the limit current of a product of I2 and 0.1 and put aside for 10min-3h; (3), the battery is discharged for 0.5h-3h at constant current of 0.05-0.2 C and put aside for 10min-3h; (4), the battery is charged at the constant current I5 of 0.2C-1 C at the limit current U3 (the highest charge cut-off voltage), charged at the constant voltage U3 at the limit current of a product of I5 and 0.1, put aside for 5min-3h, discharged at the constant current I5 at the limit voltage U4 (the lowest discharge cut-off voltage) and put aside for 20min-3 h. By means of the method, a battery material is completely activated, and the compact and stable SEI film is formed.

The invention discloses a method for preparing microcapsule clove essential oil and application of the clove essential oil in tobacco and belongs to the technical field of cigarette processing. The method is characterized by comprising the following steps: uniformly mixing three substances, namely chitosan, sucrose and glucose which are used as wall materials at a mass ratio of (1-2):1:(1-2), adding water which accounts for 10-15wt% of three substances, heating at 85-95 DEG C until the mixture is in a molten state, cooling to 30-40 DEG C, adding clove essential oil which accounts for 15-25wt% of wall materials, carrying out high-pressure homogenization to obtain an emulsion and finally performing a spray drying technology, thereby obtaining the microcapsule clove essential oil. 100% of the clove essential oil microcapsule is dissolved in water, diluted with water, added into a cigarette filter and finally rolled into a cigarette, wherein the diluted clove essential oil microcapsule accounts for 1-3wt% of the filter. By virtue of the clove essential oil microcapsule, the influence of offensive odor in the cigarette product can be improved, the aroma quantity, aroma quality and coordination of the cigarette are greatly enriched and the smoking quality of the cigarette is improved.

The invention discloses a lithium ion battery with high specific power and a preparation method for the same, which belong to the field of lithium ion batteries. The lithium ion battery with high specific power is formed by packaging a positive electrode, a gel polymer electrolyte membrane, a polyethylene porous membrane, a gel polymer electrolyte membrane and a negative electrode sequentially by means of stacking or coiling. Each gel polymer electrolyte membrane is formed by the steps of enabling polymers to dissolve into dissolvent, adding electrolytic solution containing lithium salt and organic solvent prior to mixing, and coating the mixed solution on the polyethylene porous membrane or two surfaces of the positive electrode and the negative electrode. The specific power of the lithium ion battery can be effectively increased, and the lithium ion battery with high specific power is higher in safety performance, excellent in storage performance and long in cycle life. The preparation method for the lithium ion battery with high specific power is simple in manufacturing process and low in requirements on the environment, and can be widely applied to the field of manufacturing of lithium ion batteries with high specific power.