33results about How to "Improved High Power Discharge Performance" patented technology

The invention discloses a polypyrrole minitype super capacitor in the range of the capacitor manufacturing technology based on MEMS technology and the preparation method thereof. The polypyrrole minitype super capacitor adopts the structure that a metal comb two-dimensional plane structure as a current collector is prepared on the surface of the silicon matrix by utilizing the micro-machining technology; a comb-shaped polypyrrole active electrode is prepared on the surface of the current collector by adopting the method of polypyrrole substance being prepared by the electric precipitation method; a layer of gel solid electrolyte is covered on the surface of the comb-shaped polypyrrole electrode and between a positive electrode and a negative electrode; and a layer of polyimide material is covered on the surface of the structure to accomplish the encapsulation of the minitype super capacitor. The MEMS-based manufacturing technology has the characteristic that the process is simple, and is suitable for mass manufacture. The minitype super capacitor has the advantages of small volume, high energy storage and stable performance, and is widely applicable to micro-robot electronic intelligence systems, chemical sensors, battlefield friend-or-foe identification devices, distributed type battlefield sensors and other fields.

The invention discloses composite electrode materials for a high power lithium secondary battery and a preparation method thereof. The composite electrode materials take lithium-storage active material as an inner core, conductive polymer as an outer shell, the active material inner core is mainly used for carrying out electrochemical reaction and providing main capacity for a battery, the conductive polymer material is used as a conductive agent and an adhesive when preparing electrodes, and simultaneously provides a certain amount of battery capacity by electrochemical doping and undoping reaction. By using the composite electrode materials for preparing electrodes, adhesive and conductive agent with electrochemical inertia can not be used or be used in a small amount, and the lithium secondary battery based on the composite electrode materials has high specific capacity and fine rate performance.

The invention discloses an ultrathin lithium-manganese polymer battery and a processing method thereof, belonging to the technology of lithium and manganese batteries. The technical scheme is that the ultrathin lithium-manganese polymer battery comprises an anode, a cathode, a diaphragm and an external packaging film. The anode consists of current collector aluminum foil, manganese dioxide, a conductive agent and a binder, the thickness of the anode is 0.03-0.2 mm, and the lead of the anode is formed in such a way that the extending part of the current collector aluminum foil outside the external packaging film is compounded with polypropylene or polyethylene. The cathode consists of a metal lithium sheet and a nickel strap or a copper strap or a steel strap, and the lead of the cathode is formed in such a way that the extending part of the nickel strap or the copper strap or the steel strap outside the external packaging film is compounded with polypropylene or polyethylene. The integral thickness of the battery is 0.3-0.5 mm. The processing method comprises the following steps of: (1) preparing the anode; (2) preparing the cathode; and (3) laminating and combining for molding. The invention solves the technical problem of great thickness of a traditional polymer battery, and has important significance for the generalization of various active identification cards.

The invention discloses a high energy density lithium secondary battery electrode and a preparation method thereof. The electrode consists of current collector and active material layers adhered on the current collector. The active material layer is made from lithium-storage active material and conductive polymer material, and the mass ratio of the lithium-storage active material and the conductive polymer material is 100:0.1-40. In the invention, the conductive polymer material is adopted as main conductive agent and adhesive, compared with the conductive agent and adhesive of the traditional electrode, the electrode in the invention has high energy density due to that the conductive polymer material can provide a certain amount of reversible capacity for batteries by electrochemical doping and undoping reaction.

The invention discloses a production method for the positive pole of a high-power nickel-metal hydride battery, comprising the following steps of: step 1, mixing nickel hydroxide with cobalt hydroxide, adding a small amount of yttrium oxide as an additive, and then adequately stirring and mixing to prepare a mixed powder; step 2, adding an aluminium powder in the mixed powder, and then adequately stirring and mixing to prepare a powder, wherein the particle size of the aluminium powder is controlled to be 20-100 microns; step 3, filling the powder on a matrix by means of physical filling, and rolling via a rolling machine so that the powder can be adequately contacted with the matrix to form a positive pole piece; and step 4, conveying the positive pole piece in a high-temperature tunnel kiln and performing a high-temperature treatment, and rolling again via the rolling machine, wherein the temperature in the high-temperature tunnel kiln is controlled to 150-300 DEG C. The aluminium powder is used as the filler, so that the high-power discharge performance of the nickel-metal hydride battery is improved.

The invention discloses a preparation method of a soft package cylindrical battery and the soft package cylindrical battery prepared by employing the method. The preparation method comprises preparation of a pole plate, wherein the preparation of the pole plate comprises the steps of preparing a pole plate main body and arranging a tab on the pole plate main body, the tab is arranged at a middle position of the pole plate main body, and the middle position is between third eighths and five eighths of a length direction of the pole plate main body. In the scheme, a current leading-out position is arranged at the middle position of the pole plate, so that the electron moving distance is short and the voltage drop is small during discharging of the battery.

The invention relates to a thin type thermal battery isolation sheet and a preparation method therefor. According to the method, the thin type thermal battery is prepared by adopting an electrolyte salt saturation solution wetting substrate, so that it is possible that a fused salt electrolyte, which can be dissolved extremely easily in moisture absorption, can be prepared into the isolation sheet; the method does not need a rigorous operating environment, and is high in repeatability, low cost and capable of preparing isolation sheets of different thicknesses according to needs; and meanwhile, the prepared thermal battery isolation sheets are more thinned, and the thicknesses of the isolation sheets are adjustable within a range of 150 to 350[mu]m, so that the activation time of the thermal battery can be effectively shortened, and the high-power discharging capability can be effectively improved.

The invention relates to an alkaline zinc-manganese battery. The alkaline zinc-manganese battery comprises a cathode, an anode, an isolation piece and a shell, wherein the battery cathode also contains an additive, the content of the additive in the cathode accounts for 1%-10% of the weight of the cathode; and the concentration of a cathode electrolyte in the battery ranges from 26% to 40%, the concentration of an anode electrolyte ranges from 35% to 40%, and the concentration of a battery electrolyte ranges from 26% to 40%. According to the alkaline zinc-manganese battery, through reasonablecooperation of the concentration of the additive and the concentration of the cathode electrolyte in the alkaline zinc-manganese battery, the discharge performance of the battery at medium and low power can be substantially improved, and meanwhile the high-power discharge performance of the battery also can be substantially improved.

The invention relates to a preparation method of an active bamboo charcoal/sulfur composite material and an application thereof. The method comprises steps that S1, the active bamboo charcoal is prepared; and S2, the active bamboo charcoal/sulfur composite material is prepared, the activated bamboo charcoal and the nano-sulfur powder are placed in a ball mill for ball milling for 2-4 hours, the mixture obtained by ball milling is then placed in a reaction vessel taking polytetrafluoroethylene as a substrate for heating and insulation, the reaction time is 10-20 hours, the reaction temperatureis 100-300 DEG C, and the active bamboo charcoal/sulfur composite lithium sulfur battery cathode material is obtained. The method is advantaged in that problems of poor conductivity, severe volume expansion and low sulfur loading of the lithium sulfur primary battery anode material can be effectively solved, discharge efficiency, safety performance and energy density of a lithium sulfur primary battery are improved as a whole, and the shortcoming that the existing battery capacity in the lithium battery technology in the prior art is relatively low is overcome.

The invention discloses a high-power cylindrical lithium ion battery. The high-power cylindrical lithium ion battery comprises a shell and a winding core pole group, wherein the winding core pole group is accommodated in the shell and is formed by winding positive pole plates, negative pole plates and separators, at least two positive tabs are arranged on the positive pole plates, at least two negative tabs are arranged on the negative pole plates, the positive tabs and the negative tabs are respectively exposed out of two ends of the winding core pole group, the numbers of the positive tabs and the negative tabs are equal, the positive pole plates and the negative pole plates are arranged at equal distance in a staggered way when the positive pole plates and the negative pole plates are in unfolded states, and one of the positive tab is arranged at a winding end of the positive pole plate in the unfolded state. The positive tabs and the negative tabs are arranged in the staggered way,the distance between the positive pole plates and the negative pole plates is shortened, so that current distribution of the positive pole plates and the negative pole plates is uniform, the impedance is greatly reduced, the battery is difficult to generate heat under high power, the large-power discharging performance of the battery is improved, the battery is low in impedance, good in discharging performance, long in service lifetime and high in safety.

The invention relates to a thin thermal battery spacer and a preparation method thereof. The preparation method is characterized in that the thermal battery spacer is prepared in the way that a matrix is impregnated in electrolyte molten salt, so that making molten salt electrolyte, which has extremely high probabilities of absorbing moisture and being dissolved, into the spacer becomes possible. The preparation method does not need a harsh operation environment, is good in repeatability and low in cost, and can be used for preparing spacers with different thicknesses; and meanwhile, the prepared thermal battery spacer is thinner and has the thickness capable of being adjusted within 150-350 [mu]m, so that the activation time of a battery is effectively shortened, and the high-power discharge capacity is effectively improved.

The invention belongs to the technical field of storage batteries, and particularly relates to a colloidal solid electrolyte. The electrolyte is composed of 92-94% by mass of sulfuric acid, 0.5-0.9% by mass of sodium sulfate and 5.5-6.5% by mass of fumed silica, and the density of the sulfuric acid at 20 DEG C is 1.31-1.32 g/cm <3>. Sulfuric acid in the colloidal solid electrolyte is adsorbed in the silicon dioxide aggregate, so that the phenomenon that the electrolyte is layered up and down can be effectively avoided. For the colloidal solid electrolyte, sulfuric acid, sodium sulfate and fumed silica are sequentially added into a glue preparation machine. In addition, the invention further comprises a high-power flat colloid storage battery, the high-power flat colloid storage battery comprises a positive plate, a negative plate, a partition plate and a storage battery electrolyte which are arranged in a battery jar, the storage battery electrolyte is the colloid solid electrolyte according to the claim 1, and the colloid solid electrolyte covers a negative busbar of the negative plate. The colloid storage battery can prevent the acid liquor from layering, improves the high-power discharge performance, and does not generate the phenomenon of negative electrode confluence corrosion within the service life cycle range of the colloid storage battery.