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

The invention relates to the field of electrochemistry and discloses an alkaline zinc-manganese battery with low internal resistance and a preparation method of the alkaline zinc-manganese battery. A conductive emulsion is sprayed on the surface of an anode ring of the alkaline zinc-manganese battery by using a spraying device, and the anode ring is put into a steel battery shell after being dried, so that the internal resistance of the battery is greatly reduced, and the discharge performance and the long-term storage property are improved, the cost is reduced, the process is simplified and industrialization is very easy to implement. Through improving conductive carbon in the conductive emulsion, polymer-grafted and modified conductive carbon is obtained, and the high-power discharge performance of the battery is also improved, and meanwhile, the alkaline zinc-manganese battery also has good dispersibility and stability and relatively large specific surface area, is relatively low in cost, simple in process and suitable for industrial production.

A separator paper is provided which simultaneously satisfies the requirements to have a high denseness that can prevent internal shortage due to such as the deposition of the zinc oxide dendrite accompanied by not adding mercury, and a high liquid impregnate properties that can improve heavy discharging properties. Said separator paper comprises a dense layer having a certain degree of denseness, and a liquid impregnate layer having a certain degree of liquid impregnate properties, said dense layer and said liquid impregnate layer being integrally laminated, and said dense layer being made by mixing alkali proof cellulose fibers which is applicable for beating with synthetic fibers such that said alkali proof cellulose fibers be included in the range of 20 to 80 weight % with the beating degree of 500 ml to 0 ml at CSF value, and said liquid impregnate layer being made by mixing alkali proof cellulose fibers with synthetic fibers such that said alkali proof cellulose fibers be included in the range of 20 to 80 weight % with the beating degree of more than 700 ml at CSF value.

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 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 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 relates to a positive electrode material of the alkali dry battery and a preparation method thereof and an alkali dry battery, belonging to the battery field. The technical problem to be solved by the invention is to provide a positive electrode material with low cost of the alkali dry battery and an alkali dry battery. The positive electrode material of the alkali dry battery comprises a positive electrode active ingredient, wherein the positive electrode active ingredient is a mixture of manganese dioxide and a compound with barium or calcium, and the content of the compound with barium or calcium is 0.1-5wt% of the positive electrode active ingredient. The positive electrode material of the invention can increase the high power discharge performance of the alkali dry battery, have low cost and easy promotion and application, provide a new choice for the field and have wide application prospects.

The invention provides a preparation method of a lithium ion secondary battery. The method comprises the following steps of: accommodating a battery pole in a battery shell; injecting non-aqueous electrolyte into the battery shell; and performing charging formation and then sealing the battery shell in which the non-aqueous electrolyte is injected, wherein the non-aqueous electrolyte contains one or more additives; the one or more additives are one or more of aniline monomers and pyrrole monomers; the charging formation comprises one or more constant current charging processes; at least one charging current in the constant current charging is 0.001-0.05 C; and the cut-off voltage of the charging formation is 3.6-4.2 V. The invention also provides the lithium ion secondary battery prepared by the method provided by the invention. The lithium ion secondary battery prepared by the method provided by the invention has superior high-power discharge performance. The method according to the invention is simple and practical and is easy for realizing large-scale production.