36results about How to "Improve mass to energy" patented technology

The invention relates to a preparation method of a positive pole material of a thermal battery, which comprises the following steps: (1) performing forced air drying; (2) performing vacuum drying in a vacuum drying box; (3) containing in a quartz tube, and placing in a crucible resistance furnace for high-temperature treatment; (4) taking out the material which becomes a pole billet out of the quartz tube, and smashing; and (5) weighing nickel chloride treatment powder prepared in (4) according to the proportion, stirring a conductive agent after drying with a molten salt after drying, and preparing the positive pole material of the thermal battery. Commercially available nickel chloride hexahydrate is adopted as a raw material, the forced air drying and the vacuum drying are performed, and the high-temperature treatment is performed on the dried material after smashing and screening; the loose density and the tap density of the material after treatment are improved, the electrical conductivity and the thermal conductivity of the material are improved, and the electrochemical activity of the material is improved; and the weight of water contained in the material is reduced to 1000PPM from 5% before drying. The process is simplified and stabilized, the equipment investment cost is low, and conditions are created for realizing the industrialization of the positive pole material of the thermal batteries.

The invention discloses a horizon battery and a manufacturing method thereof. Grid of existing horizon batteries is woven by glass fiber and lead composite. Lead layer on the surface of the grid is corroded fast, and conductivity is lowered when the lead layer is corroded. The horizon battery comprises a battery shell and an upper cover. A plurality of battery plate groups and partitions for blocking electrolyte circulation among the battery plate groups are disposed in the battery shell. Leading-out terminals connected to the battery plate groups are disposed at two ends of the battery shell. The battery plate groups comprise positive plates and negative plates which are alternately stacked, porous partition plates are disposed between the positive plates and the negative plates, and each positive plate and each negative plate comprise a plastic grid frame and a grid framework. The grid framework is made of lead alloy, and high in strength, corrosion resistance and conductivity. By the grid frame, usage of lead alloy is reduced, mass of the grid is lowered, and mass ratio energy of the horizon battery is improved.

The invention provides a cathode active material and a preparation method thereof and a lithium ion secondary battery prepared by the cathode active material. The preparation method comprises the following steps: mixing spherical oxides and rod-like oxides to obtain mixed oxides, performing ball milling and mixing of the mixed oxides in an N-methyl pyrrolidone solution of polyvinylidene fluoride with a mass fraction of 4% for 1 hour, adding lithium titanate and performing ball milling and mixing for 3 hours to obtain slurry, heating the slurry, stirring at 170 DEG C till the slurry is dried to obtain a titanium composite material, roasting the titanium composite material at 600 DEG C for 24-72 hours in Ar or N2 atmosphere or under vacuum, cooling to room temperature to obtain the cathode active material; the obtained cathode active material has the characteristic of dense and uniform coating layer, can effectively reduce the contact of lithium titanate and water; because of the nano-scale particle sizes of the oxides, the oxides can effectively coat lithium titanate, and thus avoid the generation of swollen phenomenon to the maximum extent, and facilitate the improvement of the cycle life, the storage performance and the security of the lithium ion secondary battery.